What comprises a motor unit?
A. One thick myofilament and all thin myofilaments with which it forms cross-bridges
B. One neuromuscular junction
C. One nerve fiber and all the muscle fibers innervated by it
D. The distance from one Z disc to the next
E. One myofibril of a muscle fiber
Answer: C
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The anatomic position allows all observers to have a common point of reference.
Indicate whether this statement is true or false.
The suprarenal glands:
A) are typically each drained by one vein. B) are each supplied by one artery that arises from the abdominal aorta. C) are each supplied by one artery that arises from a renal artery. D) each receive blood from and drain directly into the kidney. E) receive sympathetic innervation via the lumbar splanchnic nerves.
Why is the scrotum, the sac that contains the testes, located outside of the body?
What will be an ideal response?
A patient is suffering from ketoacidosis caused by an unregulated high protein diet. Which function of the blood has been compromised?
A) Stabilizing the body's pH B) Protecting against microorganisms C) Stabilizing fluid distribution in the body D) Transporting nutrients E) Transporting hormones