What is the only area of the body where the blood supply is UNAFFECTED while the individual exercises at maximum levels?
a. gall bladder
b. skeletal muscle
c. stomach
d. brain
Ans: d. brain
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The pigment melanin is a(n)
A. membrane-bound organelle. B. non-membrane-bound organelle. C. inclusion. D. nutrient. E. triglyceride.
Iron, lactic acid, and lipids are all considered to be nutrients in blood plasma
Indicate whether this statement is true or false.
A nerve cell membrane becomes depolarized as a result of
A) calcium leaving the nerve cell. B) some ion channels being opened while others are closed. C) Na+ being prevented from passing through the membrane. D) the relative ease with which K+ diffuses into the nerve cell.
The guarding reflex allows the urinary bladder to fill by ________.
A. stimulating sympathetic nerves to the external urethral sphincter to contract B. responding to stretch receptors in the bladder wall C. inhibiting parasympathetic stimulation of the detrusor muscle D. All of the choices are correct.