Circulation is the movement of substances like nutrients and gases within blood vessels and cavities throughout the organism.

Circulation is the movement of substances like nutrients and gases within blood vessels and cavities throughout the organism.
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Do all animals have a circulatory system?
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Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open spaces or body cavities called sinuses. Reason

Description : Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open spaces or body cavities called sinuses. Reason

Last Answer : Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open ... D. If both Assertion & Reason are false.

Open circulatory system is the one in which blood does not circulate only inside blood vessels but it also falls in cavities that irrigate tissues. In the open circulatory system the blood pressure is low and generally the blood (called hemolymph) has low cellularity. Arthropods, molluscs (the cephalopods are exception) and protochordates have open circulatory system. The Circulatory System - Image Diversity: open circulatory system

Description : Open circulatory system is the one in which blood does not circulate only inside blood vessels but it also falls in cavities that irrigate tissues. In the open circulatory system ... and protochordates have open circulatory system. The Circulatory System - Image Diversity: open circulatory system

Last Answer : What is a closed circulatory system?

How do the two cavities and two chambers of the eye and the circulation of aqueous humor through them?

Description : How do the two cavities and two chambers of the eye and the circulation of aqueous humor through them?

Last Answer : Need answer

The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized tissues perform different functions in the organism. (iv) Entire surface of the organism is in contact with the environment for taking in food. (a) (i) and (iii) (b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Description : The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized ... b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Last Answer : Answer: (c)

The closed circulatory system is more efficient. Since blood circulates only inside blood vessels it can do it with more pressure reaching farther distances between the organs where hematosis happens and the peripheral tissues. In addition the circulatory speed also heightens making possible more oxygen supply to great consuming tissues, like the muscle tissues that then can perform faster movements. Animals with an open circulatory system (with the exception of insects that do gas exchange independently from the circulation) are generally slower and have a low metabolic rate.

Description : The closed circulatory system is more efficient. Since blood circulates only inside blood vessels it can do it with more pressure reaching farther distances between the organs where hematosis ... exchange independently from the circulation) are generally slower and have a low metabolic rate.

Last Answer : What is the difference between octopuses and mussels regarding their circulatory systems?

Assertion `:` Mucous glands occur throughout the alimentary canal Reason `:` Mucous substances facilitate movement of food through the alimenatary can

Description : Assertion `:` Mucous glands occur throughout the alimentary canal Reason `:` Mucous substances facilitate movement of food through the alimenatary can

Last Answer : Assertion `:` Mucous glands occur throughout the alimentary canal Reason `:` Mucous substances facilitate ... . If both Assertion & Reason are false.

Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from the growing medium c. Watering only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Description : Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from ... only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Last Answer : Watering to remove excess soluble salts from the growing medium

Which of the following is an advantage of food processing? A. Availability of seasonal food throughout the year B. Removal of toxins and preserving food for longer C. Adds extra nutrients to some food items D. All of the above

Description : Which of the following is an advantage of food processing? A. Availability of seasonal food throughout the year B. Removal of toxins and preserving food for longer C. Adds extra nutrients to some food items D. All of the above

Last Answer : D. All of the above

What two systems help us get nutrients from our food and deliver them throughout our body? a) Respiratory and Nervous b) Digestive and Circulatory c) Circulatory and Respiratory d) Respiratory and Digestive

Description : What two systems help us get nutrients from our food and deliver them throughout our body? a) Respiratory and Nervous b) Digestive and Circulatory c) Circulatory and Respiratory d) Respiratory and Digestive

Last Answer : b) Digestive and Circulatory

The hyaloid artery: a. arises from the dorsal ophthalmic artery b. communicates freely with the choroidal circulation throughout development c. regresses after birth d. Bergmeister's papillae is a remnant e. forms part of the vascular propria lenti

Description : The hyaloid artery: a. arises from the dorsal ophthalmic artery b. communicates freely with the choroidal circulation throughout development c. regresses after birth d. Bergmeister's papillae is a remnant e. forms part of the vascular propria lenti

Last Answer : arises from the dorsal ophthalmic artery

Which of the following substances, not normally present in the circulation, trigger the initiating events in the hemostatic process? a. Thrombin b. Platelet factor 3 c. Tissue factor d. Collagen

Description : Which of the following substances, not normally present in the circulation, trigger the initiating events in the hemostatic process? a. Thrombin b. Platelet factor 3 c. Tissue factor d. Collagen

Last Answer : Answer: c, d The initiating agents for hemostasis involve two substances that are not normally present in the circulation-collagen and tissue factor. Tissue factor is released from ... phospholipid surface to form the so-called prothrombinase complex which catalyzes the formation of thrombin

Which of the following nursing interventions is appropriate when caring for the awake and oriented head injury patient? a) Supply oxygen therapy to keep blood gas values within normal range. The goal is to keep blood gas values within normal range to ensure adequate cerebral circulation.

Description : Which of the following nursing interventions is appropriate when caring for the awake and oriented head injury patient? a) Supply oxygen therapy to keep blood gas values within normal range. ... rails and application of mitts are the appropriate interventions in the agitated head-injured patient.

Last Answer : a) Supply oxygen therapy to keep blood gas values within normal range. The goal is to keep blood gas values within normal range to ensure adequate cerebral circulation.

The nurse advises the patient undergoing photodynamic therapy (PDT) for macular degeneration to avoid exposure to direct sunlight or bright lights for a) the first five days after the procedure. Photodynamic therapy includes the use of verteporfin, a light-activated dye. The dye within the blood vessels near the surface of the skin could become activated with exposure to strong light, such as sunlight or bright lights. Ordinary indoor light is not a problem. The patient should be counseled to wear protective clothing, such as long-sleeved shirts, sunglasses, and wide-brimmed hats, if the patient has to go outdoors during daylight hours in the first five days post-treatment. Inadvertent sunlight exposure can lead to severe blistering of the skin and sunburn.

Description : The nurse advises the patient undergoing photodynamic therapy (PDT) for macular degeneration to avoid exposure to direct sunlight or bright lights for a) the first five days after the procedure. ... should avoid exposure to direct sunlight or bright lights for the first five days post-treatment.

Last Answer : a) the first five days after the procedure. Photodynamic therapy includes the use of verteporfin, a light-activated dye. The dye within the blood vessels near the surface of the skin could ... days post-treatment. Inadvertent sunlight exposure can lead to severe blistering of the skin and sunburn.

A long-term effect of which of the following procedures post acute MI induces angioneogenesis? a) Transmyocardial laser revascularization TNR procedures usually involves making 20 to 40 channels in ventricular muscle. It is thought that some blood flows into the channels, decreasing the ischemia directly. Within the next few days to months, the channels close as a result of the body’s inflammatory process of healing a wound and new blood vessels form as a result of the inflammatory process.

Description : A long-term effect of which of the following procedures post acute MI induces angioneogenesis? a) Transmyocardial laser revascularization TNR procedures usually involves making 20 to 40 channels in ventricular muscle. ... e.g., clopidigrel [Plavix]) therapy for 2 weeks and lifetime use of aspirin).

Last Answer : a) Transmyocardial laser revascularization TNR procedures usually involves making 20 to 40 channels in ventricular muscle. It is thought that some blood flows into the channels, decreasing the ischemia directly. ... healing a wound and new blood vessels form as a result of the inflammatory process.

The principle in microbiological assays is a. At certain range the concentration of growth factor will bear a linear relationship to the amount of nutrients added b. Concentration of growth factor have a linear relationship with the growth of the organism c. Both a and b d. None of the above

Description : The principle in microbiological assays is a. At certain range the concentration of growth factor will bear a linear relationship to the amount of nutrients added b. Concentration of growth factor have a linear relationship with the growth of the organism c. Both a and b d. None of the above

Last Answer : Ans: B

How dehydration helps in the preservation of food? (a) Growth of micro-organism is checked (b) Nutrients are concentrated (c) Surface of food stuffs becomes hard (d) Chemical reactions stop in the absence of water

Description : How dehydration helps in the preservation of food? (a) Growth of micro-organism is checked (b) Nutrients are concentrated (c) Surface of food stuffs becomes hard (d) Chemical reactions stop in the absence of water

Last Answer : Ans:(a)

Competition for light, nutrients and space is most severe between (a) closely related organism growing in different niches (b) closely related organisms growing in the same area/niche (c) distantly related organisms growing in the same habitat (d) distantly related organisms growing in different niches.

Description : Competition for light, nutrients and space is most severe between (a) closely related organism growing in different niches (b) closely related organisms growing in the same area/niche (c) ... organisms growing in the same habitat (d) distantly related organisms growing in different niches.

Last Answer : b) closely related organisms growing in the same area/niche

What nutrient carries substances throughout the body?

Description : What nutrient carries substances throughout the body?

Last Answer : What is the answer ?

(1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The solution more or less takes on the characteristics of the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Description : (1) a homogeneous mixture of two or more substances Explanation: A homogeneous mixture of two or more substances uniformly dispersed throughout a single phase is called solution. In such a mixture, a ... the solvent including its phase, and the solvent is commonly the major fraction of the mixture.

Last Answer : Choose the incorrect statement pertaining to organic compounds - (1) They have low melting and boiling points (2) They do not dissolve in water (3) They are not easily combustible (4) They contain mainly carbon and hydrogen

Cell membranes a. consist almost entirely of protein molecules b. are impermeable to fat-soluble substances c. in some tissues permit the transport of glucose at a greater rate in the presence of insulin d. are freely permeable to electrolytes but not to proteins e. have a stable composition throughout the life of the cell

Description : Cell membranes a. consist almost entirely of protein molecules b. are impermeable to fat-soluble substances c. in some tissues permit the transport of glucose at a greater rate in the presence of ... to electrolytes but not to proteins e. have a stable composition throughout the life of the cell

Last Answer : in some tissues permit the transport of glucose at a greater rate in the presence of insulin

A high surface area to volume ratio in cells is important because it (a) Enables efficient transfer of wastes, nutrients and gases across the cell membrane (b) Prevents overproduction of cell proteins due to structural limitations (c) Allows many antigens on the surface for identification of self and non-self (d) Provides for better structural support to cope with external physical pressure

Description : A high surface area to volume ratio in cells is important because it (a) Enables efficient transfer of wastes, nutrients and gases across the cell membrane (b) Prevents overproduction of cell ... self and non-self (d) Provides for better structural support to cope with external physical pressure

Last Answer : Ans:(a)

Means for giving direction to the circulation of gases in furnaces are (A) Fans (B) Arrangement of heating stock in the furnaces (C) Location of outlet ports and heating & combustion devices (D) All (A), (B) and (C)

Description : Means for giving direction to the circulation of gases in furnaces are (A) Fans (B) Arrangement of heating stock in the furnaces (C) Location of outlet ports and heating & combustion devices (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Circulation of gases in furnace is caused by the (A) Change in volume during a change of temperature (B) Difference in density between hot and cold gases (C) Furnace pressure in conjunction with draft in flues(D) All (A), (B) and (C

Description : Circulation of gases in furnace is caused by the (A) Change in volume during a change of temperature (B) Difference in density between hot and cold gases (C) Furnace pressure in conjunction with draft in flues (D) All (A), (B) and (C

Last Answer : (D) All (A), (B) and (C

What is the part of the vascular system that performs exchange of gases and other substances with the tissues?

Description : What is the part of the vascular system that performs exchange of gases and other substances with the tissues?

Last Answer : Only capillaries perform exchange of gases and other substances with the tissues.

Downward movement of nutrients and salts from the root zone with the water

Description : Downward movement of nutrients and salts from the root zone with the water

Last Answer : Ans.Leaching

In crop movement programme, haploids are important because they (a) require one half of nutrients (b) are helpful in study of meiosis (c) grow better under adverse conditions (d) form perfect homozygous.

Description : In crop movement programme, haploids are important because they (a) require one half of nutrients (b) are helpful in study of meiosis (c) grow better under adverse conditions (d) form perfect homozygous.

Last Answer : (d) form perfect homozygous.

What is the fluid found within lymph vessels called?

Description : What is the fluid found within lymph vessels called?

Last Answer : blood

What is the fluid found within vessels called?

Description : What is the fluid found within vessels called?

Last Answer : blood

A column of water within xylem vessels of tall trees does not break under its weight because of (a) lignification of xylem vessels (b) positive root pressure (c) dissolved sugars in water (d) tensile strength of water.

Description : A column of water within xylem vessels of tall trees does not break under its weight because of (a) lignification of xylem vessels (b) positive root pressure (c) dissolved sugars in water (d) tensile strength of water.

Last Answer : (d) tensile strength of water.

Which of the following terms refers to chest pain brought on by physical or emotional stress and relieved by rest or medication? a) angina pectoris Angina pectoris is a symptom of myocardial ischemia. b) atherosclerosis Atherosclerosis is an abnormal accumulation of lipid deposits and fibrous tissue within arterial walls and lumens. c) atheroma Atheromas are fibrous caps composed of smooth muscle cells that form over lipid deposits within arterial vessels. d) ischemia Ischemia is insufficient tissue oxygenation and may occur in any part of the body.

Description : Which of the following terms refers to chest pain brought on by physical or emotional stress and relieved by rest or medication? a) angina pectoris Angina pectoris is a symptom of myocardial ischemia. ... d) ischemia Ischemia is insufficient tissue oxygenation and may occur in any part of the body.

Last Answer : a) angina pectoris Angina pectoris is a symptom of myocardial ischemia.

Which of these is/ are included in the domestic territory of a country? (a) Territory lying within the political frontier including territorial water of the country. (b) Ships and aircrafts operated by the residents of the country between two or more countries. (c) Fishing vessels, oil and natural gas rigs and floating platforms. ; (d) All the three

Description : Which of these is/ are included in the domestic territory of a country? (a) Territory lying within the political frontier including territorial water of the country. (b) Ships and aircrafts operated by the ... (c) Fishing vessels, oil and natural gas rigs and floating platforms. ; (d) All the three

Last Answer : (b) Ships and aircrafts operated by the residents of the country between two or more countries. 

A continuous passive motion (CPM) device applied after knee surgery a) promotes healing by increasing circulation and movement of the knee joint. A CPM device applied after knee surgery promotes healing by increasing circulation and movement of the knee joint.

Description : A continuous passive motion (CPM) device applied after knee surgery a) promotes healing by increasing circulation and movement of the knee joint. A CPM device applied after knee surgery ... applied after knee surgery promotes healing by increasing circulation and movement of the knee joint.

Last Answer : a) promotes healing by increasing circulation and movement of the knee joint. A CPM device applied after knee surgery promotes healing by increasing circulation and movement of the knee joint.

Simple organisms like sponges and cnideria circulate_____from their surrounding through their body cavities.

Description : Simple organisms like sponges and cnideria circulate_____from their surrounding through their body cavities.

Last Answer : Simple organisms like sponges and cnideria circulate_____from their surrounding through their body cavities. ... Blood C. Colourless plasma D. Water

Has anyone gotten through life so far without any teeth cavities?

Description : Has anyone gotten through life so far without any teeth cavities?

Last Answer : My first appeared in my middle 60s. The second is with me now.

Functions of the nasal cavities. -Biology

Description : Functions of the nasal cavities. -Biology

Last Answer : answer:

Can cavities kill you?

Description : Can cavities kill you?

Last Answer : Not really, Though the bacteria found in such cavities canaffect your cardiovascular health (heart and arteries, veins),plaque buildup is also not good for you.

I have constricted cervical and nasal cavities, what about that?

Description : Hello, I'm 15 and I have had a strange condition in my throat and nose all my life, I think my gore is constantly congested and my nasal cavities are narrow. I've never dealt with it in any way, ... through my nose, Please give me a professional or even PS .... I've been to almond surgery before.

Last Answer : See a doctor.

The cavities of brain are lined by

Description : The cavities of brain are lined by

Last Answer : The cavities of brain are lined by A. Cuboidal cells B. Polygonal cells C. Ependymal cell D. Simple squamous cells

What are the five cavities of the body?

Description : What are the five cavities of the body?

Last Answer : There are not five cavities of the human body. There are the 1)cranium that holds the brain, 2) the thorax that hold the heart andlungs and stomach, liver, pancreas, spleen, appendix and ... the small and largeintestines, (the ovaries, uterus for women), the bladder and thetesticles (for men).

What group of tissue is the main tissue in skin and the linning of body cavities?

Description : What group of tissue is the main tissue in skin and the linning of body cavities?

Last Answer : Need answer

The presence of air cavities is an adaptation of - (1) Desert plants (2) Trees (3) Water plants (4) Mesophytes

Description : The presence of air cavities is an adaptation of - (1) Desert plants (2) Trees (3) Water plants (4) Mesophytes

Last Answer : (3) Water plants Explanation: Totally submerged plants are the true water plants or hydrophytes. Because they are truly aquatic they have the greatest number of adaptations to life in ... cavities often extend throughout the leaves and stems of aquatic plants, providing an internal atmosphere.

The muscular membrane that divides the upper thorax and the abdominal cavities in

Description : The muscular membrane that divides the upper thorax and the abdominal cavities in

Last Answer : mammals is diaphragm.

The following structure is absent is birds B A. Pleura B. Diaphragm C. Pleural cavities D. Large instestine

Description : The following structure is absent is birds B A. Pleura B. Diaphragm C. Pleural cavities D. Large instestine

Last Answer : Diaphragm

The following structure is absent is birds B A. Pleura B. Diaphragm C. Pleural cavities D. Large instestine

Description : The following structure is absent is birds B A. Pleura B. Diaphragm C. Pleural cavities D. Large instestine

Last Answer : Diaphragm

Water containing cavities in vascular bundles are found in (a) sunflower (b) maize (c) Cycas (d) Pinus.

Description : Water containing cavities in vascular bundles are found in (a) sunflower (b) maize (c) Cycas (d) Pinus.

Last Answer : (b) maize

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum (a) Mollusca (b) Protozoa (c) Coelenterata (d) Porifera.

Description : Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of Phylum (a) Mollusca (b) Protozoa (c) Coelenterata (d) Porifera.

Last Answer : (d) Porifera.

Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation (B) Cavitation may be caused due to boiling of liquid by decreasing the pressure resulting in formation & collapse of vapor cavities (C) Cavitation begins at higher static pressure and lower velocity in larger diameter pipelines resulting in audible noise(D) Large scale cavitation cannot damage pipeline, restrict fluid flow anddamage steam turbine blades

Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Presence of a certain minimum quantity of fluorine is desirable in potable water to prevent (A) Dental cavities (B) Scale formation (C) Water-borne disease (D) Corrosion

Description : Presence of a certain minimum quantity of fluorine is desirable in potable water to prevent (A) Dental cavities (B) Scale formation (C) Water-borne disease (D) Corrosion

Last Answer : (A) Dental cavities