ECC sequence of events are as follows except
Depolarization travels to sarcolemma - T tubules - T type Calcium channels are opened
Calcium released into the cytoplasm - 80%
Calcium that is released will activate Calcium release channels in the lateral sacs
1&2 are wrong
All of them are wrong
All of the following regarding Reynold's number are true except?
Decrease in diameter increases the Reynold's number - mechanism in Aortic Stenosis
Severe Aortic stenosis (affecting the cardiac output) the increase in velocity - causes an increase in Reynold's number
In high altitude a decrease in viscosity will increase the Reynold's number
All of the above
All of the following cause an increase in pulse pressure except?
Aortic regurgitation
Exercise
AV fistula
Pulmonary regurgitation
All of the following about contractility are true except?
Catecholamines increase the contracility
Digitalis depresses the myocardium thereby decreasing contractility
Frequent stimulation increases the contractality
To assess contractility the preload has to be constant
All of the following are true about exercise except?
Increase in Systolic pressure because of increase in cardiac output
decrease in diastolic pressure because of increase in peripheral vascular resistance due to increased sympathetic activity
increased pulse pressure
decreased firing of the baroreceptors
All of the following are seen in Hypovolemic shock except
Systolic pressure is decreased
Diastolic pressure is increased
Pulse pressure increased
Peripheral vascular resistance increased
P1 is increased and P2 is decreased when there is an obstruction in all of the following except?
Aortic Stenosis
Mitral stenosis
Coarctation of aorta
femoral arterial obstruction
All of the following are true except?
Autoregulation is by which the constancy of flow is maintained with change in mean arterial pressure
Metabolites in the blood cause arteriolar vasodilation
Brain tissue pH if low causes cerebral vasodilation
The level of blood pH has little effect n cerebral blood flow
All of the following are true regarding autoregulation except?
It is a reflex
Brain, heart and skeletal muscle are examples of autoregulation
Kidney and gut do not have autoregulation
