Description : How are the circulatory system in animals and the vascular system in plants different?
Last Answer : Need answer
Description : Which group of plant is known as first vascular and true land plants? Write their characteristics in detail.
Last Answer : Which group of plant is known as first vascular and true land plants? Write their characteristics in detail.
Description : Closed blood vascular system found in
Last Answer : Closed blood vascular system found in A. Bombyx B. Sepia C. Balanoglossus D. Ascidia
Description : Which of the following statement(s) is/are correct concerning the cardiovascular response to shock? a. Changes in cardiac contractile function shift the Frank Starling curve up and down b. ... d. The total circulating blood volume is equally split between the arterial and venous system
Last Answer : Answer: a Central in the general cardiovascular response to shock is the action of the heart itself. The principle determinants of cardiac function in the normal heart are the volume of blood ... Blood flow to the skin is sacrificed early, followed by that to the kidneys and splanchnic viscera
Description : The blood-brain-barrier: a. contains the foot processes of astrocytes b. contains endothelial cells with tight junction c. allows transport in one direction only ie from the vascular system into the brain d. does not allow diffusion of water
Last Answer : does not allow diffusion of water
Description : Which of the following statement(s) is/are true concerning septic shock? a. The clinical picture of gram negative septic shock is specifically different than shock associated with ... mechanisms of intrinsic expansion of the circulating blood volume, exogenous volume resuscitation is necessary
Last Answer : Answer: d The clinical findings in sepsis and septic shock represent the host response to infection. Gram-positive and gram-negative bacteria, viruses, fungi, rickettsiae, and ... intravascular volume, exogenous volume resuscitation must be provided to restore venous return and ventricular filling
Description : Relationship between arterial blood pressure (BP), cardiac outpur (CO) and peripheral vascular resistance (PVR) can be described as (a) BP = COxPVR (b) BP = CO/PVR (c) BP = PVR/CO (d) None of the above
Last Answer : Ans: A
Description : Which of the following is a recognised feature of abetalipoproteinaemia? 1) a high serum cholesterol 2) palmar xanthomas 3) advanced atherosclerotic vascular disease 4) abnormal red blood cell morphology 5) severe mental retardation
Last Answer : Answers-4 Acanthocytes are seen in abetalipoproteinaemia. Retinitis pigmentosa is seen in abetalipoproteinaemia. Mental retardation is not present but motor abnormalities and neurodegenerative are seen.
Description : The vascular lesions caused by leeches upon the blood vessels of their host cause blood naturally to coagulate. How does the leech solve this problem since it could be expected that the ingested blood would coagulate inside its body?
Last Answer : Ingested blood does not coagulate inside the leech (Hirudo medicinalis) because in its saliva there is a potent anticoagulant substance, a protein called hirudin. In the past leeches were ... in prevention against tissue necrosis after some surgeries and in several others fields of Medicine.
Description : Which of the following is a perfect match? (1) Coronary attack - vascular dilation (2) Atherosclerosis - blockage of arteries (3) Hypertension - low blood pressure (4) Hypotension - heart attack
Last Answer : (4) Hypotension - heart attack Explanation: In physiology and medicine, hypotension is abnormally low blood pressure, especially in the arteries of the systemic circulation. Hypotension is the opposite of ... force of blood pushing against the walls of the arteries as the heart pumps out blood.
Description : With regard to the blood retina barrier: a. the outer blood retina is formed by the retinal pigment epithelium cells and their junctions b. the blood retina barrier is typically defective in the ... fluid and anions from the extracellular space of the retina into the circulation d. all above
Last Answer : all above
Description : 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
Last Answer : B. Increased peristalsis of gut
Description : The most likely mechanism of antihypertensive action of thiazide diuretics in the long-term is: A. Reduction of circulating blood volume B. Reduction in cardiac output C. Decreased sympathetic tone D. Reduction in total peripheral vascular resistance and improved compliance of resistance vessels
Last Answer : D. Reduction in total peripheral vascular resistance and improved compliance of resistance vessels
Description : The antihypertensive action of calcium channel blockers is characterized by the following except: A. Delayed onset; blood pressure starts falling after 1–2 weeks therapy B. Lack of central side effects C. No compromise of male sexual function D. Safety in peripheral vascular diseases
Last Answer : A. Delayed onset; blood pressure starts falling after 1–2 weeks therapy
Description : Blood flow in the following vascular bed generally decreases under the influence of glyceryl trinitrate: A. Coronary B. Cutaneous C. Renal D. Cranial
Last Answer : C. Renal
Description : Morphine induced fall in blood pressure involves the following factors except: A. Direct cardiac depression B. Direct reduction of vascular tone C. Vasomotor centre depression D. Histamine release
Last Answer : A. Direct cardiac depression
Description : Which of the following is a perfect match ? (1) Coronary attack – vascular dilation (2) Atherosclerosis – blockage of arteries (3) Hypertension – low blood pressure (4) Hypotension – heart attack
Last Answer : Hypotension – heart attack