The amount of CSF within the brain at any given moment
A. is about 50-60 ml.
B. is somewhere around 1,000 ml.
C. ranges between 100 ml and 160 ml.
D. is about 500 ml.
E. ranges between 300 ml and 420 ml.
Answer: C
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A man with hypertension takes a diuretic that is not potassium-sparing, and he does not increase his ingestion of potassium. Which of the following side-effects would the drug be most likely to cause?
A. Cardiac arrhythmia B. Increased blood volume C. Depolarized neuronal cell membranes D. Hyperkalemia E. All of these side effects would occur.
Which statement is false?
a. Sound waves are produced by a disturbance pattern in air molecules. b. Sound waves gradually dissipate as they travel from the original sound source. c. Long sound waves vibrate more hair cells near the oval window than near the helicotrema. d. A sound at 60 decibels will always be louder than a sound at 50 cycles per second. e. Sound waves vibrate perilymph before they vibrate endolymph.
Local control mechanisms can override sympathetic control of changes in the size of arterioles
Indicate whether the statement is true or false
Plasma is closest in ionic composition to
A) urine. B) isotonic saline solution. C) sterile water. D) CSF. E) interstitial fluid.