To pick up something heavier than your pencil, your nervous system could

a. stimulate larger motor units
b. decrease the frequency of stimulation to allow a more prolonged contraction to occur
c. decrease the refractory periods
d. block acetylcholinesterase at the neuromuscular junction to allow acetylcholine to function longer
e. do all of the above


A

Anatomy & Physiology

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Structure A on the skin diagram is the


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C) subcutaneous layer.
D) cutaneous membrane.
E) hypodermis.

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A) an increase in the amount of potassium in the urine B) no effect on the amount of potassium in the urine C) a decrease in the amount of potassium in the urine

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The quill or central part of a contour feather is known as what?

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Anatomy & Physiology