Test 180  (General physiology)
1. Regarding the kidneys: 
a. there are 1.3 millions nephrons in each kidney
b. they produce the aldosterone

c. they receive 12% of the cardiac output when at rest

d. they produce 1.25-dihydroxycalciferol

e. there are more blood flow through the renal cortex than 
    the renal medulla

2. Aldosterone secretion is controlled by:

a. plasma sodium concentration

b. plasma calcium concentration

c. plasma potassium concentration

d. angiotensin II

e. adrenocorticotrophic hormone (ACTH) 

3. In pregnancy:
a. the lysozyme in the tear film is increased

b. the intraocular pressure is lower than pre-pregnancy 

c. accommodation is decreased

d. the corneal curvature is decreased 

e. the corneal sensitivity is decreased

. 4. The following findings are normal in pregnancy:
a. elevated erythrocyte sedimentation rate (ESR)

b. raised serum urea

c. raised serum creatinine

d. elevated white blood cell count

e. elevated alkaline phosphate


5. With regard to cerebral autoregulation:

a. cerebral blood flow is constant over a diastolic blood
    pressure of 60 to 140 mmHg

b. autoregulation is lost during the acute phase of
    subarachnoid haemorrhage

c. it is impaired in hypercapnia

d. it is impaired in hypoxia

e. it is mediated by the sympathetic nervous system

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