The greatest resistance to blood flow occurs in which of the following vessels?
a. arterioles
b. capillaries
c. venules
d. veins
Answer: a. arterioles
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Much of our understanding of the tetrapod muscle function is derived from studies of the
A) Muscles comprising the walls of the squid mantle cavity. B) Diaphragm of the white laboratory rat. C) External oblique muscles of Necturus and other non-jumping amphibians. D) Muscles comprising the hindlimb of frogs.
All steroids are unhealthy.
Answer the following statement true (T) or false (F)
In general, nerves from the posterior division of the brachial plexus tend to innervate muscles that extend the parts of the upper limb.
Answer the following statement true (T) or false (F)
In response to sympathetic stimulation, ________; this allows for ________during fight-or-flight.
A. intestinal motility increases; greater energy availability B. blood vessels in skeletal muscles dilate; greater oxygen delivery to the muscle C. bronchioles vasodilate; heart rate to decrease D. pupils constrict; more acute vision