The deltoid is responsible for __________.
A. adducting the arm
B. abducting the arm
C. extending the humerus
D. medially rotating the humerus
Ans: B. abducting the arm
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Which level of organization is represented by an ?-helix or ?-pleated sheet?
A) Secondary B) Primary C) Tertiary D) Quarternary
The suprachiasmatic nucleus
A) receives input directly from the retina. B) coordinates daily cycles. C) regulates the pineal gland. D) outputs to the hypothalamic nuclei. E) All of the answers are correct.
The nuances of eye color arise from
A. the numbers of rods and cones in the retina. B. how much vitamin A is in a person's diet. C. multiple alleles of at least 10 genes. D. the way pigments are deposited in the iris.
The thalamus
a. performs preliminary processing of all sensory input on its way to the cortex. b. inhibits muscle tone throughout the body. c. controls thirst, urine output, and food intake. d. plays a role in emotional and behavioral patterns. e. selects and maintains purposeful motor activity while suppressing useless or unwanted patterns of movement.