Which one of the following is incorrect for Atherosclerosis?
Constriction of arterial luman reduces the blood flow
Loss of dilatation ability of the arterial wall and its rupture
Cholesterol deposition at the inner wall of the artery
Proliferation of the vascular muscles
B.
Loss of dilatation ability of the arterial wall and its rupture
Atherosclerosis is a condition of wall thickening and narrowing of lumen of medium and large arteries due to formation of atheromas or plaques of cholesterol of at their inner wall. The smooth muscles also proliferate probably caused by release of Platelet Derived Growth Factor (PDGF). Atherosclerosis leads to hypertension, reduced blood supply, angina, heart attack or stroke etc.
Bone is mainly composed of
iron and phosphorus
sulphur and calcium
calcium and phosphorus
calcium and magnesium
Juxtaglomerular apparatus is made up of
juxtaglomerular cell, macula densa and lacis cell
juxtaglomerular cell, Purkinje cell and chied cell
juxtaglomerular cell, lads cell and myoepithelial cell
juxtaglomerular cell, macula densa and Argentaffin cell
Which one of the following is mainly responsible for the second heart sound?
Closure of atrioventricular valves
Opening of atrioventricular valves
Closure of semilunar valves
Thrust of blood on ventricular wall during atrial contraction
Amount of oxygen supplied by 100 mL arterial blood while passing through the tissues is
0.4 - 0.6 mL
4 - 6mL
14 - 15 mL
19 - 20 mL
Which one of the following statement is incorrect?
Glucagon is secreted by pancreas
Androgen is produced by ovary
Thyroxine is secreted by thyroid
Oxytocin is secreted by pituitary
