1) Which of the following has an inherent rhythmicity of 100 beats per minute
a) SA node
b) Atrial muscles
c) AV node
d) Ventricular muscles
e) His bundle
2) Which phase of the cardiac muscle action potential has got Na+ conduction increased maximally and K+ conduction decreased?
a) Phase 0
b) Phase 1
c) Phase 2
d) Phase 3
e) Phase 4
3) Which of the following represents the blood pressure of the capillaries of leg of a man who is standing very still?
a) 25 mmHg
b) 32 mmHg
c) 100 mmHg
d) 120 mmHg
e) 180 mmHg
4) Which of the following are seen in peripheral circulatory failure during hemorrhage?
a) Raised hematocirt
b) Warm red skin
c) Reduction in the central venous pressure
d) Bradykinin
e) Increased reticulocyte count
5) Capillary permeability increased by
a) Bradikinin b) Adrenalin c) Calcium d) Vasopressin e) Histamine
6) Which are the following are true about blood pressure.
a) Good blood supply to the left ventricle during systole. b) Greater the systolic diastolic pressure
c) Blood flow to left ventricle increases in early systole d) Is equal to cardiac output multiplied by the ejection fraction. e) Blood flow to left ventricle increases during sympathetic nerve stimulation