List the steps how inhalation (inspiration) and exhalation (expiration) occur. Explain the cardiac cycle periods and ind

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List the steps how inhalation (inspiration) and exhalation
(expiration) occur.
Explain the cardiac cycle periods and indicate whether the
heart valves are open or closed during these periods.
What are the factors affecting blood pressure? In a person with
low blood pressure, how does the body change these factors to raise
blood pressure?
Explain in which organ and by which enzymes the digestion and
absorption of proteins, fats and carbohydrates take place.
Explain the negative feedback mechanism by giving an example of
the regulation of a hormone level.
Ali is a 37 year old man who complains of increasing muscle
fatigue in his lower extremities upon walking. If he rests for 5
-10 minutes, his leg strength returns to normal. If he talks on the
phone, his ability to form words gradually decreases. By evening
his upper eyelids droop to the point that he has to pull them back
to see normally. When he is asked to hold his arms straight out as
long as he is able, his begin to drift in few minutes. Doctor
performs electromyogram and blood work. Results show that Ali has
Myasthenia Gravis. Myasthenia gravis is an acquired autoimmune
disease in which the patient has developed antibodies against
nicotinic acetylcholine receptors at neuromuscular junction. List
and explain the muscle contraction mechanism that effected by this
disease. What can be do to improve his muscle strength?
Explain the response of the body to hypoglycemia. Which
physiological processes contribute to the control of the blood
glucose level? Can glycogen stored in the muscles contribute to the
blood glucose, explain why?