The anterior and posterior chambers of the eye are separated by the ________.
A. lens
B. optic disc
C. retina
D. iris
E. cornea
Answer: D
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The sarcoplasmic reticulum is (the)
A) extension of the skeletal muscle plasmalemma into the cell. B) cytoplasm of skeletal muscle fibers. C) plasmalemma of skeletal muscle fibers. D) endoplasmic reticulum of skeletal muscle fibers. E) None of the answers are correct.
The lungs are held against the thoracic wall due to
a. the negative intrapleural pressure. b. the positive intrapulmonary pressure. c. cohesiveness of the pleural fluids. d. both (a) and (c) above. e. all of these answers.
Dorsal rami of spinal nerves innervate
A) anterior neck muscles. B) deep back muscles. C) intercostal muscles. D) muscles of the upper limb. E) plexuses.
Glucagon primarily influences cells of the
A. brain. B. liver. C. kidneys. D. smooth muscle. E. pancreas.