The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)?
A) Na+only
B) both Na+ and K+
C) Ca2+ only
D) K+ only
E) both Ca2+ and K+
A) Na+only
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The two divisions of the efferent division of the peripheral nervous system are the ____________________ nervous system, which supplies cardiac muscle, smooth muscle, and glands, and the ____________________ nervous system, which supplies skeletal muscle
Fill in the blank(s) with correct word
Implantation involves ________
A) formation of germ layers B) placenta completion C) embedding of the blastocyst in the uterine wall D) fusion of egg and sperm
Which of the following cranial nerves is exclusively sensory?
A. Trigeminal (V) B. Trochlear (IV) C. Vestibulocochlear (VIII) D. Hypoglossal (XII) E. Facial (VI)
E.Z. Goen is admitted to the cardiac unit with a diagnosis of endocarditis. When E.Z. asks the nurse where the infection is located, the nurse replies that the infection is in
A. the outer layer of the heart wall. B. the inner lining of the heart. C. a membranous sac that encloses the heart wall. D. the muscular layer of the heart. E. the lining of the mediastinum.