Muscles needed for endurance require ________ than do less demanding muscles.
A. more nerves
B. a richer blood supply
C. less mass
D. more heat
Answer: B
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The granulations that appear during the healing of a large, open wound are composed
mainly of A) fibroblasts surrounding blood vessels. B) blood clots. C) scar tissue. D) phagocytic cells.
Which system engages in mass activation?
A. Parasympathetic nervous system B. Sympathetic nervous system
The neural tissue is isolated from the general circulation by the
A) dura mater. B) choroid plexuses. C) arachnoid granulations. D) meninges. E) blood-brain barrier.
The structure labeled 2 in the diagram is a
a) somatic motor neuron. b) parasympathetic preganglionic neuron. c) parasympathetic postganglionic neuron. d) sympathetic preganglionic neuron. e) somatosensory neuron.