Rather than having abundant elastic fibers in all the tunics, the muscular arteries have elastic confined to two circumscribed rings, the internal and external elastic laminae.
Answer the following statement true (T) or false (F)
True
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Which of the following happens if body temperature rises above normal?
A) Circulation in the skin decreases. B) Sweat gland activity decreases. C) Evaporative cooling stops. D) Blood flow to the skin increases. E) The activity of melanocytes increases.
In order for an action potential to occur, a certain membrane potential called the ________ must be reached.
A. depolarization B. sodium-potassium pump C. threshold D. hyperpolarization
Primitive alveoli begin to develop profusely in the embryo around the
A. time of birth. B. 28th week. C. 8th week. D. 18th week.
Which of the following describes muscular tissue emerging directly from bone rather than being separated from it by an obvious tendon?
A. Direct attachment B. Origin C. Indirect attachment D. Inverted attachment E. Insertion