1) Describe the physiological mechanisms leading to
a. Fever
b. Heat stroke
2) Bilateral ankle oedema may occur on sitting with feet down for a long time. Explain the physiological basis of this.
3) A correlation has been found between plasma ADH and plasma osmolality in humans. Explain this statement.
4)
A. Describe the process of contraction of skeletal muscle.
B. State how this process differs in
a) Smooth muscle
b) Cardiac muscle
5) List in sequence the events that take place at the neuromuscular junction during neuromuscular transmission.
6) Give reasons as to why the heart muscle is considered a syncitium.
7)
A. Draw a diagram of the action potential recorded from a normal ventricular muscle fiber.
B. Indicate the ionic fluxes at each phase of the action potential.
C. Explain the action of Ca2+ channel blockers on the cardiac muscle action potential.
8) Explain the physiological basis of the following:
A. Saltatory conduction in nerve fibers is an energy conserving mechanism.
B. In a normal subject, tapping on the patella tendon produced no response.
But when the tapping was done after asking the patient to grip his hands tightly together, this produced the knee jerk reflex.
(9.) Write a account of physiology of body temperature regulation in a healthy adult.comments briefly on physiology of each of following .
a.Fever
b. Heat strokeLabels: Physiology SEQ