The primary function of eyebrows is to
A. form a protective barrier of fat and hair to help shade the eye.
B. prevent excess light from entering the eye.
C. prevent sweat from dripping into the open eye.
D. prevent objects from striking the eye.
E. allow the appropriate amount of light to enter the eye.
Answer: C
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The common term for the buccal region is the
A) back. B) waist. C) breast. D) cheeks. E) buttocks.
The ________ ligament anchors a tooth in the alveolus of the jaw.
Fill in the blank(s) with the appropriate word(s).
A hereditary disorder called __________ cell disease is characterized by abnormal hemoglobin and crescent-shaped cells.
Fill in the blank(s) with the appropriate word(s).
Heart valves open and close in response to __________.
A. Electrical activity in the autorhythmic cells B. Activity of papillary muscles C. Pressure changes in heart chambers D. Autonomic innervation