Assertion `:-` Platelets repair dammaged endothelium of blood vessels. Reason `:` Platelets secrete serotonin which is a vaso constrictor

Assertion `:-` Platelets repair dammaged endothelium of blood vessels. Reason `:` Platelets secrete serotonin which is a vaso constrictor
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Assertion `:-` Platelets repair dammaged endothelium of blood vessels. Reason `:` Platelets secrete ... . If both Assertion & Reason are false.
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Assertion `:-` An increase in glomerular blood pressure can activate the JG of kidney to release renin. Reason `:-` Angiotensin I is a powerful vaso c

Description : Assertion `:-` An increase in glomerular blood pressure can activate the JG of kidney to release renin. Reason `:-` Angiotensin I is a powerful vaso c

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Aspirin prolongs bleeding time by inhibiting the synthesis of: A. Clotting factors in liver B. Prostacyclin in vascular endothelium C. Cyclic AMP in platelets D. Thromboxane A2 in platelets

Description : Aspirin prolongs bleeding time by inhibiting the synthesis of: A. Clotting factors in liver B. Prostacyclin in vascular endothelium C. Cyclic AMP in platelets D. Thromboxane A2 in platelets

Last Answer : D. Thromboxane A2 in platelets

The endothelium: a. maintains the integrity of the corneal stroma through an ATP-Na+, K+-dependent pump b. receives its nutrient from the blood vessels surrounding the cornea c. undergoes multiplication in response to trauma d. contains tight junction between adjacent endothelium

Description : The endothelium: a. maintains the integrity of the corneal stroma through an ATP-Na+, K+-dependent pump b. receives its nutrient from the blood vessels surrounding the cornea c. undergoes multiplication in response to trauma d. contains tight junction between adjacent endothelium

Last Answer : maintains the integrity of the corneal stroma through an ATP-Na+, K+-dependent pump

Select the action of vasopressin exerted through the V1 subtype receptors: A. Release of coagulation factor VIII and von Willebrands factor from vascular endothelium B. Increased peristalsis of gut C. Dilatation of blood vessels D. Increased water permeability of renal collecting ducts

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Last Answer : B. Increased peristalsis of gut

Assertion: Platelets play an important role in blood clotting. Reason: In the blood oozing from an injury, the platelets disintegrate and release thro

Description : Assertion: Platelets play an important role in blood clotting. Reason: In the blood oozing from an injury, the platelets disintegrate and release thro

Last Answer : Assertion: Platelets play an important role in blood clotting. Reason: In the blood oozing from an ... D. If both Assertion & Reason are false.

The following are true about platelets: a. they are formed in the bone marrow from megakaryocytes. b. their life span in circulation is about 30 days c. in a normal person, 20% of the platelets are found in the spleen. d. they contain adenosine diphophate and serotonin.

Description : The following are true about platelets: a. they are formed in the bone marrow from megakaryocytes. b. their life span in circulation is about 30 days c. in a normal person, 20% of the platelets are found in the spleen. d. they contain adenosine diphophate and serotonin.

Last Answer : they contain adenosine diphophate and serotonin.

Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful and useless substances which escaped ultrafil

Description : Assertion `:-` Peritubular capillaries secrete substances in the convoluted tubules. Reason `:-` Harmful and useless substances which escaped ultrafil

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Assertion : Estrogen level is high during the follicular phase of menstrual cycle . Reason : During this phase corpus luteum secrete large amount of e

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Assertion: HIV infection can be avoided by use of condoms. Reason: Condoms secrete anti-viral interferons.

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Assertion `:-` ADH prevents diuresis. Reason `:-` ADH also affect the kidney function by its constrictory effects on blood vessels.

Description : Assertion `:-` ADH prevents diuresis. Reason `:-` ADH also affect the kidney function by its constrictory effects on blood vessels.

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Assertion`:` Atherosclerosis affects the vessels that supply blood to the heart muscle. Reason`:` It is caused by deposits of calcium, fat, chalestero

Description : Assertion`:` Atherosclerosis affects the vessels that supply blood to the heart muscle. Reason`:` It is caused by deposits of calcium, fat, chalestero

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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

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Assertion `:` Prothrombinase enzyme act as antiheparin Reason `:` Heparin prevent coagulation of blood in Blood vessels

Description : Assertion `:` Prothrombinase enzyme act as antiheparin Reason `:` Heparin prevent coagulation of blood in Blood vessels

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Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood vessels . Reason : Rapid fall in the level o

Description : Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood vessels . Reason : Rapid fall in the level o

Last Answer : Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood ... D. If both Assertion & Reason are False.

Platelets play an important role in haemostasis; which of the following describes this role? A. They convert fibrinogen to fibrin B. They agglutinate and plug small, ruptured vessels C. They initiate fibrinolysis in thrombosis D. They supply fibrin stabilizing factors E. They supply proconvertin for thromboplastin activation

Description : Platelets play an important role in haemostasis; which of the following describes this role? A. They convert fibrinogen to fibrin B. They agglutinate and plug small, ruptured ... thrombosis D. They supply fibrin stabilizing factors E. They supply proconvertin for thromboplastin activation

Last Answer : B. They agglutinate and plug small, ruptured vessels

Which of the following hormone causes vaso-constriction `:-`

Description : Which of the following hormone causes vaso-constriction `:-`

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Who will be crowned F1 constrictor and driver champions this season?

Description : Who will be crowned F1 constrictor and driver champions this season?

Last Answer : Kimi or Hamilton….Alonso might play the spoiler since he’s back with Renault….

Do boa constrictor eat sloths?

Description : Do boa constrictor eat sloths?

Last Answer : Need answer

Is a Boa Constrictor poisonous?

Description : Is a Boa Constrictor poisonous?

Last Answer : It isn't. No species of Boas or Pythons are venomous.

Is a Boa Constrictor poisonous?

Description : Is a Boa Constrictor poisonous?

Last Answer : It isn't. No species of Boas or Pythons are venomous.

Which muscle has insertion in the pterygoid raphe:** A. Superior constrictor of the pharynx B. Middle constrictor of the pharynx C. Inferior constrictor of the pharynx

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Last Answer : A. Superior constrictor of the pharynx

In the inferior alveolar block the needle goes through or close to which muscles: A. Buccinator and superior constrictor B. Medial and lateral pterygoid C. Medial pterygoid and superior instructor D. Temporal and lateral pterygoid E. Temporal and medial pterygoid

Description : In the inferior alveolar block the needle goes through or close to which muscles: A. Buccinator and superior constrictor B. Medial and lateral pterygoid C. Medial pterygoid and superior instructor D. Temporal and lateral pterygoid E. Temporal and medial pterygoid

Last Answer : A. Buccinator and superior constrictor

Blood capillaries are made of (a) endothelium, connective tissue and muscle fibres (b) endothelium and muscle fibres (c) endothelium and connective tissue (d) endothelium only.

Description : Blood capillaries are made of (a) endothelium, connective tissue and muscle fibres (b) endothelium and muscle fibres (c) endothelium and connective tissue (d) endothelium only.

Last Answer : d) endothelium only.

Difference between pulmonary artery and pulmonary vein is that, the pulmonary artery has (a) no endothelium (b) valves (c) thicker walls (d) oxygenated blood.

Description : Difference between pulmonary artery and pulmonary vein is that, the pulmonary artery has (a) no endothelium (b) valves (c) thicker walls (d) oxygenated blood.

Last Answer : (c) thicker walls

In lungs, the air is separated from the venous blood through (a) transitional epithelium + tunica externa of blood vessel (b) squamous epithelium + endothelium of blood vessel (c) squamous epithelium + tunica media of blood vessel (d) none of the above

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Last Answer : (b) squamous epithelium + endothelium of blood vessel

A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason the blood pressure is higher in animals with closed circulatory system. The cellularity of the blood is also higher with many specific blood cells. The closed circulatory system is a feature of annelids, cephalopod molluscs and vertebrates. The Circulatory System - Image Diversity: closed circulatory system

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Last Answer : What are the advantages of the closed circulatory system over the open circulatory system?

Give reason: Choroid is thick and rich with blood vessels

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The figure shows a human blood cell. Identify it and give its characteristics. Blood cell Characteristics (a) Basophil Secretes serotonin, inflammatory response (b) B-lymphocyte Forms about 20% of blood cells involved in immune response (c) Neutrophil Most abundant blood cells, phagocytic (d) Monocyte Lifespan of 3 days, produces antibodies

Description : The figure shows a human blood cell. Identify it and give its characteristics. Blood cell Characteristics (a) Basophil Secretes serotonin, inflammatory response (b) B-lymphocyte Forms about 20% of ... Most abundant blood cells, phagocytic (d) Monocyte Lifespan of 3 days, produces antibodies

Last Answer : (a) Basophil Secretes serotonin, inflammatory response

During the course of a cellular hypersensitivity a. Antibodies react with antigens in tissues. b. Serotonin and histamine are released by cells. c. Immune complexes form on blood vessel surfacesd. A skin thickening called an induration may form..

Description : During the course of a cellular hypersensitivity a. Antibodies react with antigens in tissues. b. Serotonin and histamine are released by cells. c. Immune complexes form on blood vessel surfaces. d. A skin thickening called an induration may form.

Last Answer : b. Serotonin and histamine are released by cells.

The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Description : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Last Answer : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) ... (C) Basement substances in between capillaries and alveoli

The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Description : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) Endothelium of alveolar capillaries (C) Basement substances in betw

Last Answer : The diffusion membrane is made up of: (A) Thick columnar epithelium of alveoli (B) ... (C) Basement substances in between capillaries and alveoli

Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Last Answer : Ans: C

Ependymal cells lining the cavity of brain and spinal cord constitute (a) epithelioid tissue (b) ealse epithelium (c) mesothelium (d) endothelium

Description : Ependymal cells lining the cavity of brain and spinal cord constitute (a) epithelioid tissue (b) ealse epithelium (c) mesothelium (d) endothelium

Last Answer : Ans:(b)

What is the action of prostacyclin on vascular endothelium?

Description : What is the action of prostacyclin on vascular endothelium?

Last Answer : Prostacyclin causes vasodilatation. It also inhibits platelet aggregation and has a protective effect on vessel wall against deposition of platelets.

When Squamous epithelium is called endothelium?

Description : When Squamous epithelium is called endothelium?

Last Answer : When epithelium is found lining from inside, it is called endothelium.

The following cells contribute the wavefronts of the flash ERG: a. retinal pigment epithelium b. corneal endothelium c. photoreceptors d. ganglion cell

Description : The following cells contribute the wavefronts of the flash ERG: a. retinal pigment epithelium b. corneal endothelium c. photoreceptors d. ganglion cell

Last Answer : photoreceptors

Vasodilators produced by the endothelium include: a. endothelium derived relaxing factor (EDRF) b. nitric oxide (NO) c. prostacyclin (PGL2) d. all above

Description : Vasodilators produced by the endothelium include: a. endothelium derived relaxing factor (EDRF) b. nitric oxide (NO) c. prostacyclin (PGL2) d. all above

Last Answer : . all above

True statements about the aqueous include: a. the production is about 2 ul/min b. the endothelium contribute to the production of aqueous c. its production decreases with age d. all above

Description : True statements about the aqueous include: a. the production is about 2 ul/min b. the endothelium contribute to the production of aqueous c. its production decreases with age d. all above

Last Answer : all above

The cornea: a. is thicker centrally than peripherally b. contains 10,000 endothelium cells per square mm at birth c.has an acellular collagenous stroma d. contain Descemet's membrane is produced by the endothelium e. has a refractive index of 1.38

Description : The cornea: a. is thicker centrally than peripherally b. contains 10,000 endothelium cells per square mm at birth c.has an acellular collagenous stroma d. contain Descemet's membrane is produced by the endothelium e. has a refractive index of 1.38

Last Answer : contain Descemet's membrane is produced by the endothelium

In which point, pulmonary artery is different from pulmonary vein?(a) Its lumen is broad. (b) Its wall is thick. (c) It has valves. (d) It does not possess endothelium.

Description : In which point, pulmonary artery is different from pulmonary vein? (a) Its lumen is broad. (b) Its wall is thick. (c) It has valves. (d) It does not possess endothelium.

Last Answer : (b) Its wall is thick.

Choose the correct statement(s) about actions of insulin: A. It favours translocation of glucose transporters from intracellular site to the plasma membrane B. It enhances transcription of lipoprotein lipase in vascular endothelium C. It increases production of the enzyme glucokinase D. All of the above

Description : Choose the correct statement(s) about actions of insulin: A. It favours translocation of glucose transporters from intracellular site to the plasma membrane B. It enhances transcription of lipoprotein ... vascular endothelium C. It increases production of the enzyme glucokinase D. All of the above

Last Answer : D. All of the above

The action of histamine that is not mediated through H1 receptors is: A. Release of EDRF from vascular endothelium resulting in vasodilatation B. Direct action on vascular smooth muscle causing vasodilatation C. Bronchoconstriction D. Release of catecholamines from adrenal medulla

Description : The action of histamine that is not mediated through H1 receptors is: A. Release of EDRF from vascular endothelium resulting in vasodilatation B. Direct action on vascular smooth muscle causing vasodilatation C. Bronchoconstriction D. Release of catecholamines from adrenal medulla

Last Answer : B. Direct action on vascular smooth muscle causing vasodilatation

Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

The action of histamine that is not mediated through H1 receptors is: A. Release of EDRF from vascular endothelium resulting in vasodilatation B. Direct action on vascular smooth muscle causing vasodilatation C. Bronchoconstriction D. Release of catecholamines from adrenal medulla

Description : The action of histamine that is not mediated through H1 receptors is: A. Release of EDRF from vascular endothelium resulting in vasodilatation B. Direct action on vascular smooth muscle causing vasodilatation C. Bronchoconstriction D. Release of catecholamines from adrenal medulla

Last Answer : B. Direct action on vascular smooth muscle causing vasodilatation

Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

Mechanism by which adrenaline can prolong the duration of local anesthesia a) Decreased permeability of the vascular endothelium b) Precipitation of lidocaine c) Changing the pH of the solution d) Local Vasoconstriction

Description : Mechanism by which adrenaline can prolong the duration of local anesthesia a) Decreased permeability of the vascular endothelium b) Precipitation of lidocaine c) Changing the pH of the solution d) Local Vasoconstriction

Last Answer : d) Local Vasoconstriction 

Most of the thickness of cornea is formed by: a. Epithelial layer b. Substantia propria c. Descemet's membrane d. Endothelium

Description : Most of the thickness of cornea is formed by: a. Epithelial layer b. Substantia propria c. Descemet's membrane d. Endothelium

Last Answer : ANSWER: B  

Which of the following is/are true concerning wound fibroblasts? A. Fibroblasts synthesize and secrete collagen molecules. B. Wound fibroblasts are derived from blood-borne precursor cells. C. Fibroblasts migrate to a wound along fibrin strands, which are used as a scaffold. D. Large amounts of fibrin or blood clot can act as a physical barrier to fibroblast penetration, which delays normal wound healing.

Description : Which of the following is/are true concerning wound fibroblasts? A. Fibroblasts synthesize and secrete collagen molecules. B. Wound fibroblasts are derived from blood-borne precursor cells. C. ... clot can act as a physical barrier to fibroblast penetration, which delays normal wound healing.

Last Answer : Answer: ACD DISCUSSION: Fibroblasts appear in the wound on about the third day of healing and begin to synthesize and secrete collagen molecules. Wound fibroblasts arrive from cells surrounding ... enzymes, and large amounts of fibrin and blood clot prevent fibroblasts from entering the wound

The following are true about cerebrospinal fluid: a. it is found in the space between the pia mater and the arachnoid b. the normal amount in human being is about 500 ml c. with the body lying in lateral horizontal position, the normal intracranial pressure is about 100 ml of water d. only the lateral ventricle contains choroidal plexus which secrete cerebrospinal fluid e. cerebrospinal fluid contains the same concentration of glucose as the blood

Description : The following are true about cerebrospinal fluid: a. it is found in the space between the pia mater and the arachnoid b. the normal amount in human being is about 500 ml c ... plexus which secrete cerebrospinal fluid e. cerebrospinal fluid contains the same concentration of glucose as the blood

Last Answer : it is found in the space between the pia mater and the arachnoid

Which of the following statements is the characteristics of human cornea? (a) It is secreted by conjuctiva and glandular layer. (b) It is a lacrimal gland which secrete tears. (c) Blood circulation is absent in cornea. (d) In old age it becomes the cause of cataract.

Description : Which of the following statements is the characteristics of human cornea? (a) It is secreted by conjuctiva and glandular layer. (b) It is a lacrimal gland which secrete tears. (c) Blood circulation is absent in cornea. (d) In old age it becomes the cause of cataract.

Last Answer : (c) Blood circulation is absent in cornea.