A heart with a single atrium and single ventricle is a characteristic of adult: a) amphibians b) arthropods c) birds d) fish

A heart with a single atrium and single ventricle is a characteristic of adult: a) amphibians b) arthropods c) birds d) fish
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ANSWER: D -- FISH
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Central venous pressure is measured in which of the following heart chambers? a) Right atrium The pressure in the right atrium is used to assess right ventricular function and venous blood return to the heart. b) Left atrium The left atrium receives oxygenated blood from the pulmonary circulation. c) Left ventricle The left ventricle receives oxygenated blood from the left atrium. d) Right ventricle The right ventricle is not the central collecting chamber of venous circulation.

Description : Central venous pressure is measured in which of the following heart chambers? a) Right atrium The pressure in the right atrium is used to assess right ventricular function and venous blood return ... d) Right ventricle The right ventricle is not the central collecting chamber of venous circulation.

Last Answer : a) Right atrium The pressure in the right atrium is used to assess right ventricular function and venous blood return to the heart.

Assertion`:` In fishes single circulation occur Reason `:` Fishes have a 2-chambered hearts with an atrium and a ventricle.

Description : Assertion`:` In fishes single circulation occur Reason `:` Fishes have a 2-chambered hearts with an atrium and a ventricle.

Last Answer : Assertion`:` In fishes single circulation occur Reason `:` Fishes have a 2-chambered hearts with an ... . D. If both Assertion & Reason are false.

Assertion `:` The opening between the right atrium and the right ventricle is guarded by a bicuspid or mitral valve. Reason `:` The valves in the hear

Description : Assertion `:` The opening between the right atrium and the right ventricle is guarded by a bicuspid or mitral valve. Reason `:` The valves in the hear

Last Answer : Assertion `:` The opening between the right atrium and the right ventricle is guarded by a bicuspid or ... . D. If both Assertion & Reason are false.

The opening between the right atrium and the right ventricle is guarded by which valve ?

Description : The opening between the right atrium and the right ventricle is guarded by which valve ?

Last Answer : The opening between the right atrium and the right ventricle is guarded by which valve ? A. ... Bicuspid value C. Semilular valve D. Eustachian valve

The opening between the right atrium and the right ventricle is guarded by which valve ?

Description : The opening between the right atrium and the right ventricle is guarded by which valve ?

Last Answer : The opening between the right atrium and the right ventricle is guarded by which valve ? A. ... Tricuspid valve C. mitral valve D. semilunar valve

What is the correct route for blood flow in a human? Left atrium " Left ventricle " Lungs " Right ventricle " Right atrium Left atrium " Left ventricle " Right ventricle " Right atrium " Lungs (c) Right atrium " Right ventricle " Left ventricle " Left atrium " Lungs (d) Right atrium " Right ventricle " Lungs " Left atrium " Left ventricle

Description : What is the correct route for blood flow in a human? Left atrium " Left ventricle " Lungs " Right ventricle " Right atrium Left atrium " Left ventricle " Right ventricle " Right atrium " Lungs (c) ... " Left atrium " Lungs (d) Right atrium " Right ventricle " Lungs " Left atrium " Left ventricle

Last Answer : (d) Right atrium " Right ventricle " Lungs " Left atrium " Left ventricle

Blood pressure in the mammalian aorta is maximum during (a) systole of the left ventricle (b) diastole of the right atrium (c) systole of the left atrium (d) diastole of the right ventricle

Description : Blood pressure in the mammalian aorta is maximum during (a) systole of the left ventricle (b) diastole of the right atrium (c) systole of the left atrium (d) diastole of the right ventricle

Last Answer : (a) systole of the left ventricle

Match the items given in column I with those in column II and select the correct option given below. Column I Column II A. Tricuspid valve (i) Between left atrium and left ventricle B. Bicuspid valve (ii) Between right ventricle and pulmonary artery C. Semilunar valve (iii) Between right atrium and right ventricle A B C (a) (iii) (i) (ii) (b) (i) (iii) (ii) (c) (i) (ii) (iii) (d) (ii) (i) (iii)

Description : Match the items given in column I with those in column II and select the correct option given below. Column I Column II A. Tricuspid valve (i) Between left atrium and left ventricle B. Bicuspid valve (ii) Between right ventricle and ... (b) (i) (iii) (ii) (c) (i) (ii) (iii) (d) (ii) (i) (iii)

Last Answer : (a) (iii) (i) (ii)

Match the items given in Column I with those in Column II and select the correct option given below: Column I Column II a. Tricuspid valve i. Between left atrium and left ventricle b. Bicuspid valve ii. Between right ventricle and pulmonary artery c. Semilunar valve iii. Between right atrium and right ventricle a b c (1) iii i ii (2) i iii ii (3) i ii iii (4) ii i iii

Description : Match the items given in Column I with those in Column II and select the correct option given below: Column I Column II a. Tricuspid valve i. Between left atrium and left ventricle b. Bicuspid valve ii. Between right ventricle and ... a b c (1) iii i ii (2) i iii ii (3) i ii iii (4) ii i iii

Last Answer : (1) iii i ii

The neurogenic heart is the characteristic feature of (a) humans (b) arthropods (c) rabbits (d) rats

Description : The neurogenic heart is the characteristic feature of (a) humans (b) arthropods (c) rabbits (d) rats

Last Answer : (b) arthropods

Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ventricle (b) Chordata : possess a mouth with an upper and a lower jaw (c) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Description : Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ... ) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Last Answer : (c) Chondrichthyes : possess cartilaginous endo- skeleton

Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ventricle (b) Chordata : possess a mouth with an upper and a lower jaw (c) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Description : Which one of the following groups of animals is correctly matched with its characteristic feature without any exception? (a) Reptilia : possess 3-chambered heart with an incompletely divided ... ) Chondrichthyes : possess cartilaginous endo- skeleton (d) Mammalia : give birth to young ones

Last Answer : (c) Chondrichthyes : possess cartilaginous endo- skeleton

Which of the following characteristic features always holds true for the corresponding group of animals? (a) Possess a mouth with an Chordata upper and a lower jaw (b) 3–chambered heart with Reptilia one incompletely divided ventricle (c) Cartilaginous endoskeleton Chondrichthyes (d) Viviparous

Description : Which of the following characteristic features always holds true for the corresponding group of animals? (a) Possess a mouth with an Chordata upper and a lower jaw (b) 3- ... heart with Reptilia one incompletely divided ventricle (c) Cartilaginous endoskeleton Chondrichthyes (d) Viviparous

Last Answer : (c) Cartilaginous endoskeleton

What is the morphological characteristic that evolutionarily approximates the beings of the phylum Annelida to arthropods?

Description : What is the morphological characteristic that evolutionarily approximates the beings of the phylum Annelida to arthropods?

Last Answer : The metameric feature, i.e., the body segmentation in metameres, approximates annelids to arthropods since these animals are segmented beings too. (Bristles present in oligochaete and polychaete annelids are also covered with chitin, the same substance of the arthropod exoskeleton.)

Which of the following ECG waveforms characterizes conduction of an electrical impulse through the left ventricle? a) QRS complex The QRS complex represents ventricular depolarization b) P wave The P wave is an ECG characteristic reflecting conduction of an electrical impulse through the atria. c) PR interval The PR interval is a component of an ECG tracing reflecting conduction of an electrical impulse through the AV node. d) QT interval The QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.

Description : Which of the following ECG waveforms characterizes conduction of an electrical impulse through the left ventricle? a) QRS complex The QRS complex represents ventricular depolarization b) P ... QT interval is an ECG characteristic reflecting the time from ventricular depolarization to repolarization.

Last Answer : a) QRS complex The QRS complex represents ventricular depolarization

(a) Name the group of plants known as “Amphibians of plant world”. Mention their four important characteristics. (b) Give three points on how birds have adapted themselves to an aerial mode of life. -Science

Description : (a) Name the group of plants known as “Amphibians of plant world”. Mention their four important characteristics. (b) Give three points on how birds have adapted themselves to an aerial mode of life. -Science

Last Answer : Bryophytes are known as"amphibians of plant world". Three important characters of bryophytes are- (i)The plants are green and possess chloroplasts. (ii)They show autotrophic mode of nutrition. (iii)The plant body lacks true roots, stem or leaves.

Bones are pneumatic in - (1) Fishes (2) Amphibians (3) Reptiles (4) Birds

Description : Bones are pneumatic in - (1) Fishes (2) Amphibians (3) Reptiles (4) Birds

Last Answer : (4) Birds Explanation: Pneumatic boneis is hollow bone filled with air, connected to the respiratory system. Many of a bird's bones are pneumatic, with struts across their ... , certain physical characteristics are required. Flying birds have evolved reduced weight through several characteristics.

Darvvin finches' refers to a group of - (1) Fishes (2) Lizards (3) Birds (4) Amphibians

Description : Darvvin finches' refers to a group of - (1) Fishes (2) Lizards (3) Birds (4) Amphibians

Last Answer : (3) Birds Explanation: Darwin's finches (also known as the Galapagos finches) are a group of about 15 species of passerine birds. They often are classified as the subfamily Geospizinae or tribe ... . All are found only on the Galapagos Islands, except the Cocos Island Finch from Cocos Island.

Syrinx is the voice box in - (1) Amphibians (2) Reptiles (3) Birds (4) Mammals

Description : Syrinx is the voice box in - (1) Amphibians (2) Reptiles (3) Birds (4) Mammals

Last Answer : (3) Birds Explanation: Syrinx is the name for the vocal organ of birds. Located at the base of a bird's trachea, it produces sounds without the vocal cords of mammals. The sound is ... the membrana tympaniformis (the walls of the syrinx) and the pessulus caused by air flowing through the syrinx.

‘Darwin finches’ refer to a group of : (1) Fishes (2) Lizards (3) Birds (4) Amphibians

Description : ‘Darwin finches’ refer to a group of : (1) Fishes (2) Lizards (3) Birds (4) Amphibians

Last Answer : (3) Birds Explanation: Darwin's finches are a group of about 15 species of passerine birds. They often are classified as the subfamily Geospizinae or tribe Geospizini. They were first collected by ... , and the beaks are highly adapted to different food sources. The birds are all dull-coloured.

Bartholin’s glands are situated (a) on the sides of the head of some amphibians (b) at the reduced tail end of birds (c) on either side of vagina in humans (d) on either side of vas deferens in humans

Description : Bartholin’s glands are situated (a) on the sides of the head of some amphibians (b) at the reduced tail end of birds (c) on either side of vagina in humans (d) on either side of vas deferens in humans

Last Answer : (c) on either side of vagina in humans

Uricotelic mode of excreting nitrogenous wastes is found in (a) reptiles and birds (b) birds and annelids (c) amphibians and reptiles (d) insects and amphibians.

Description : Uricotelic mode of excreting nitrogenous wastes is found in (a) reptiles and birds (b) birds and annelids (c) amphibians and reptiles (d) insects and amphibians.

Last Answer : (a) reptiles and birds

Bones are pneumatic in (1) Fishes (2) Amphibians (3) Reptiles (4) Birds

Description : Bones are pneumatic in (1) Fishes (2) Amphibians (3) Reptiles (4) Birds

Last Answer : Birds

Syrinx is the voice box in (1) Amphibians (2) Reptiles (3) Birds (4) Mammals

Description : Syrinx is the voice box in (1) Amphibians (2) Reptiles (3) Birds (4) Mammals

Last Answer : Birds

‘Darwin finches’ refer to a group of : (1) Fishes (2) Lizards (3) Birds (4) Amphibians

Description : ‘Darwin finches’ refer to a group of : (1) Fishes (2) Lizards (3) Birds (4) Amphibians

Last Answer : Birds

In humans, blood passes from the post caval to the diastolic right atrium of heart due to

Description : In humans, blood passes from the post caval to the diastolic right atrium of heart due to

Last Answer : In humans, blood passes from the post caval to the diastolic right atrium of heart due to A. ... pushing open of the venous valves D. suction pull

What vessel receives deoxygenated blood in the right atrium via the heart?

Description : What vessel receives deoxygenated blood in the right atrium via the heart?

Last Answer : Need answer

Which of the following regarding the anatomy of the heart is true? A. The aortic valve is tricuspid. B. The ascending aorta is entirely outside the pericardial sac. C. The left atrial appendage is identified readily by transthoracic echocardiography. D. The pulmonary trunk lies anterior to the ascending aorta. E. The right atrium is posterior to the left atrium.

Description : Which of the following regarding the anatomy of the heart is true? A. The aortic valve is tricuspid. B. The ascending aorta is entirely outside the pericardial sac. C. The left atrial appendage is ... trunk lies anterior to the ascending aorta. E. The right atrium is posterior to the left atrium.

Last Answer : Ans: A

To which heart chamber does the blood go after leaving the left atrium? What is the valve that separates these compartments?

Description : To which heart chamber does the blood go after leaving the left atrium? What is the valve that separates these compartments?

Last Answer : The arterial blood that has come from the lungs to the left atrium passes then to the left ventricle. The valve between the left ventricle and the left atrium is the mitral valve, a ... left atrium during systole (contraction of the ventricles). The Circulatory System - Image Diversity: mitral valve

When a child is born, what happens to its blood circulation? (1) Its blood flows for the first time (2) Its blood reverses its flow through the heart (3) Its blood ceases to pass from one atrium to the other (4) Its blood carries wastes for the first time

Description : When a child is born, what happens to its blood circulation? (1) Its blood flows for the first time (2) Its blood reverses its flow through the heart (3) Its blood ceases to pass from one atrium to the other (4) Its blood carries wastes for the first time

Last Answer : (4) Its blood carries wastes for the first time Explanation: The Fetal circulatory system is unique during pregnancy before the lungs first come into use at birth. Its circulatory system must reorient ... umbilical cord constrict and close. All this happens in a few moments when the baby is born.

In humans, blood passes from the post caval to the diastolic right atrium of heart due to (a) stimulation of the sino auricular node (b) pressure difference between the post caval and atrium (c) pushing open of the venous valves (d) suction pull.

Description : In humans, blood passes from the post caval to the diastolic right atrium of heart due to (a) stimulation of the sino auricular node (b) pressure difference between the post caval and atrium (c) pushing open of the venous valves (d) suction pull.

Last Answer : (b) pressure difference between the post caval and atrium

If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non- functional, what will be the immediate effect? (a) The flow of blood into the aorta will be slowed down. (b) The ‘pacemaker’ will stop working. (c) The blood will tend to flow back into the left atrium. (d) The flow of blood into the pulmonary artery will be reduced.

Description : If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non- functional, what will be the immediate effect? (a) The flow of blood into the aorta will be slowed ... back into the left atrium. (d) The flow of blood into the pulmonary artery will be reduced.

Last Answer : (d) The flow of blood into the pulmonary artery will be reduced.

When a child is born, what happens to its blood circulation ? (1) Its blood flows for the first time (2) Its blood reverses its flow through the heart (3) Its blood ceases to pass from one atrium to the other (4) Its blood carries wastes for the first time

Description : When a child is born, what happens to its blood circulation ? (1) Its blood flows for the first time (2) Its blood reverses its flow through the heart (3) Its blood ceases to pass from one atrium to the other (4) Its blood carries wastes for the first time

Last Answer : Its blood carries wastes for the first time

How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, Aquatic arthropods, Flatworm, Molluscs, Bir

Description : How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, Aquatic arthropods, Flatworm, Molluscs, Bir

Last Answer : How many animals in the given list have gills for respiration ? Earthworm , Frog, Fish, Insects, Reptiles, ... A. Six B. Four C. Three D. Five

All of the following are characteristic of amphibians EXCEPT: a) moist skin b) the absence of scales c) metamorphosis d) live in salt water

Description : All of the following are characteristic of amphibians EXCEPT: a) moist skin b) the absence of scales c) metamorphosis d) live in salt water

Last Answer : ANSWER: D -- live in salt water 

How different are the respiration in fishes and the respiration in adult amphibians?

Description : How different are the respiration in fishes and the respiration in adult amphibians?

Last Answer : In fishes gas exchange is done by direct contact of water with the branchiae (gills). Gases gain and exit the circulation through the gills. In adult amphibians gas exchange is done through the ... breathes through gills even as an adult. Frog Facts Review - Image Diversity: axolotl amphibian skin

What is the type of circulatory system present in arthropods? Do these animals have heart and respiratory pigments?

Description : What is the type of circulatory system present in arthropods? Do these animals have heart and respiratory pigments?

Last Answer : In arthropods the respiratory system is open (lacunar). Blood, also known as hemolymph, is pumped by a heart and falls into cavities (lacunas) irrigating and draining tissues. All arthropods have ... blood does not carry gases (in them gases reach tissues and cells through tracheal structures).

Is a ostrich a reptile amphibians fish bird or mammle?

Description : Is a ostrich a reptile amphibians fish bird or mammle?

Last Answer : Feel Free to Answer

Prawns belong to which family? (1) Crustaceans (2) Fish (3) Amphibians (4) Reptiles

Description : Prawns belong to which family? (1) Crustaceans (2) Fish (3) Amphibians (4) Reptiles

Last Answer : (1) Crustaceans Explanation: Prawn is a common name for small aquatic crustaceans with an exoskeleton and tenlegs. Prawns are also known as shrimps.

Sharks are: a) amphibians b) bony fish c) cartilaginous fish (pron: kart-el-aj-eh-nes) d) reptiles

Description : Sharks are: a) amphibians b) bony fish c) cartilaginous fish (pron: kart-el-aj-eh-nes) d) reptiles

Last Answer : ANSWER: C -- CARTILAGINOUS FISH

(a) Draw a sectional view of the human heart and label on it – Aorta, Right ventricle and Pulmonary veins. (b) State the functions of the following components of transport system: (i) Blood (ii) Lymph -Biology

Description : (a) Draw a sectional view of the human heart and label on it – Aorta, Right ventricle and Pulmonary veins. (b) State the functions of the following components of transport system: (i) Blood (ii) Lymph -Biology

Last Answer : Answer.(a) (b) The functions of blood and lymph are as follows: (i) BloodOxygen is transported by the blood to the tissues of the body for the breakdown of digested food.Carbon dioxide is ... without which nothing will diffuse. (iii) A thin surface across which gases diffuse. (iv) Warm conditions.

When right ventricle of human heart contract then blood pumped into `:-`

Description : When right ventricle of human heart contract then blood pumped into `:-`

Last Answer : When right ventricle of human heart contract then blood pumped into `:-` A. All parts of body B. Lungs C. Pulmonary veins D. Systemic aorta

What structures transmit the heart impulse from the av node to the ventricle?

Description : What structures transmit the heart impulse from the av node to the ventricle?

Last Answer : Bundle of Hisatrioventicular bundle (bundle of his), right and left bundle bramches and the purkinge conducition fibers

The action of quinidine differs from that of digitalis in (a) Decreasing irritability of cardiac muscle (b) Preventing passage of impulses to the ventricle (c) Increasing irritability of heart muscle (d) Reducing conductivity (e) None of the above

Description : The action of quinidine differs from that of digitalis in (a) Decreasing irritability of cardiac muscle (b) Preventing passage of impulses to the ventricle (c) Increasing irritability of heart muscle (d) Reducing conductivity (e) None of the above

Last Answer : Ans: A

Impulses from the pace -maker cause the (a) ventricles to contract (b) auricles to contract (c) both the ventricle and auricle to contract (d) heart to relax

Description : Impulses from the pace -maker cause the (a) ventricles to contract (b) auricles to contract (c) both the ventricle and auricle to contract (d) heart to relax

Last Answer : Ans:(b)

The chamber of the mammalian heart from which deoxygenated blood is sent for oxygenation is (a) right auricle (b) right ventricle (c) left auricle (d) left ventricle

Description : The chamber of the mammalian heart from which deoxygenated blood is sent for oxygenation is (a) right auricle (b) right ventricle (c) left auricle (d) left ventricle

Last Answer : Ans:(d)

When the Left Ventricle in the human heart contracts, the blood moves to the - (1) Brain (2) Pulmonary Artery (3) Aorta (4) Lungs

Description : When the Left Ventricle in the human heart contracts, the blood moves to the - (1) Brain (2) Pulmonary Artery (3) Aorta (4) Lungs

Last Answer : (3) Aorta Explanation: As the left ventricle contracts, the oxygenated blood is pumped into the main artery of the body — the aorta. To get to the aorta, blood passes through the aortic semilunar valve, which serves to keep blood flowing from the aorta back into the left ventricle.