Which of the following hormones is important for T lymphocyte maturation?
What will be an ideal response?
thymosin
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If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________.
A) threshold is reached more quickly and heart rate would increase B) potassium channels compensate and no change in heart rate would occur C) heart rate would decrease, but blood pressure would rise due to the excess sodium present D) tetanic contraction would occur due to the short absolute refractory period of cardiac muscle
Endorphins and enkephalins
a. are endogenous morphine-like substances. b. are important in the body's natural analgesic system. c. block the actions of substance P by binding with opiate receptors. d. both (a) and (b) above. e. all of these answers.
What muscle underlies the anterior faucial pillars?
What will be an ideal response?
The amount of rough ER is greater in cells producing large amounts of protein for secretion.
Answer the following statement true (T) or false (F)