A ringing in the ears is called ________.
A. tinnitus
B. trachoma
C. nystagmus
D. otitis media
E. mydriasis
Answer: A
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Angiotensin II has what effect on the CNS?
A) Angiotensin II suppresses the activity of the CNS including reducing thirst, reducing ADH production and reducing sympathetic motor tone. B) Angiotensin II triggers CNS responses including increasing thirst, increasing ADH production and increasing sympathetic motor tone. C) Angiotensin II suppresses the activity of the CNS including increasing thirst, increasing ADH production and increasing sympathetic motor tone. D) Angiotensin II triggers CNS responses including reducing thirst, reducing ADH production and reducing sympathetic motor tone. E) Angiotensin II has little effect on the CNS but activates the PNS.
The “pump” or “pressure-head” for the pulmonary circulation is the:
A. right atrium B. right ventricle C. left atrium D. left ventricle
Normal heart sounds are caused by which of the following events?
closure of the heart valves friction of blood against the chamber walls opening and closing of the heart valves excitation of the SA node
On a warm day, would the cremaster muscle be contracted or relaxed? Why?
A) The cremaster muscle would be contracted so the scrotum would be pulled close to the body. B) The cremaster muscle would be contracted so the scrotum could descend away from the body. C) The cremaster muscle would be relaxed so the scrotum would be pulled close to the body. D) The cremaster muscle would be relaxed so the scrotum could descend away from the body. E) The cremaster muscle would be contracted so the testes can descend into the scrotal cavities.