Which of the following blood pressure readings would be indicative of hypertension?
A) 140/90
B) 110/60
C) 120/80
D) 170/96
D
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An electroencephalogram (EEG) measures brain waves primarily generated by
a) neurons in the pons. b) neurons in the medulla oblongata. c) neurons in the thalamus. d) neurons in the cerebral cortex. e) neurons in the cerebellum.
In general, a skeletal muscle is composed of
a: connective tissue sheaths b: nerves c: arteries d: veins e: muscle fibers A. a, b, c, e B. a, b, d, e C. b, c, d, e D. a, b, c, d E. a, b, c, d, e
Which of the following surrounds individual muscle fibers?
A) epimysium B) perimysium C) endomysium D) tendon
Voltage-gated sodium channels are activated:
A) during repolarization. B) during hyperpolarization. C) only if the cell is depolarized to threshold. D) after voltage-gated potassium channels are activated.