A cell is actively manufacturing enough organelles to serve two functional cells. This cell is probably in what phase of interphase?
A) G0
B) G1
C) G2
D) S
E) M
Answer: B
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Which term means away from the midline of the body?
A. Lateral B. Ventral C. Medial D. External E. Distal
An increase in heart rate is accompanied by
a. an increase in L-type Ca2+ channel activity. b. an increase in K+ flux through voltage-gated K+ channels. c. an increase in the passive movement of Na+ into cells of the SA node. d. an increase in the passive movement of K+ out of cells of the SA node. e. a combined increase in passive movement of Na+ and K+ out of the cells of the SA node.
Parasympathetic stimulation of the heart
a. increases venous return to the heart. b. has an impact on the ventricular conduction pathway. c. increases the number of cross-bridges that can form during contraction. d. increases the strength of contraction. e. none of these.
The ________ extends the forearm.
A. biceps brachii B. frontalis C. gluteus maximus D. triceps brachii