Cardiac muscle layers form this distinct pattern
A) inner longitudinal layer
B) outer longitudinal layer
C) outer circular layer
D) figure eight
E) weave
D
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Na+/K+—ATPase is considered to be an electrogenic pump because
a) it contributes to the negativity of the resting membrane potential. b) the sodium ions are negatively charged. c) it exhibits low permeability. d) both it contributes to the negativity of the resting membrane potential and the sodium ions are negatively charged. e) all of these choices
The _______ nuclei within the gray matter of the spinal cord send nerve impulses to skeletal muscles
A. visceral sensory B. somatic sensory C. autonomic motor D. somatic motor
How many primary oocytes does a female have by the onset of puberty?
A. 400,000 B. 500,000 C. 1 million D. 2 million E. 1,000
The SA node relays nerve impulses into the AV bundle of the interventricular septum,
and the AV node is responsible for the rhythmic contractions of the heart. Indicate whether the statement is true or false