The superior colliculi help you respond to
A. visual stimuli â€" for example, when you turn toward a bright flash of light.
B. auditory stimuli â€" for example, when you turn toward a loud bang.
C. somatic stimuli â€" for example, when you swat at a bug that has landed on your arm.
D. internal stimuli from your viscera â€" for example, when you feel abdominal pain.
A
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Which muscle has an origin at the external occipital protuberance ligamentum nuchae and an insertion at the lateral third of clavicle acromion?
a. Teres major. b. Latissimus dorsi. c. Trapezius. d. Teres minor.
Feces are about ________ percent water.
A. 25 B. 50 C. 75 D. 33
In simple autosomal inheritance, phenotypic characters are determined, or controlled, by
A) a single pair of alleles. B) multiple alleles. C) the action of a single gene. D) regulator genes on a different chromosome. E) the genes on the Y chromosome.
In skeletal muscle cells, calcium initiates contraction by binding to
A. actin. B. tropomyosin. C. the thick filament. D. myosin. E. troponin.