The contraction of the piloerector muscles (pilomotor muscle or arrector pili) in humans causes ________.
A. hairs to stand on end with no apparent function
B. hairs to stand on end to make the individual appear bigger
C. generation of heat to raise the body temperature
D. hairs to stand on end, trapping an insulating layer of warm air next to the skin
E. increased ability to feel pain
Answer: A
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The adrenal cortex releases ______________, which "tells" the kidney to take up extra sodium ions.
A. ADH B. epinephrine C. glucose D. aldosterone
Ions with a negative charge are called ________.
Fill in the blank(s) with the appropriate word(s).
The part of the vertebrae that transfers weight along the axis of the vertebral column is the
A) vertebral arch. B) vertebral body. C) articular processes. D) intervertebral space. E) None of the answers is correct.
Which of the following receptor type is mismatched with its sensation?
A. Hair follicle receptors - slight bending of the hair B. Merkel disks - light touch C. Meissner corpuscles - two-point discrimination D. Pacinian corpuscles - vibration E. Ruffini end organs - temperature