What structure acts as a gateway for sensory impulses before they reach the cerebral cortex?
A) Corpus callosum
B) Cerebellum
C) Hypothalamus
D) Thalamus
Answer: D
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When smooth muscle is stretched for a prolonged period of time, it responds by
A. contracting. B. relaxing.
The nervous system and the ________ system share important structural and functional characteristics, such as relying upon some form of chemical communication with targeted tissues and organs.
Fill in the blank(s) with the appropriate word(s).
Reflexes help to control
A) respiratory rate. B) digestive activities. C) heart rate and blood pressure. D) all of the above.
Why can smooth muscle contract over a wider range of resting lengths than skeletal muscle?
A) smooth muscle has tight junctions to keep the fibers anchored B) in smooth muscle the actin and myosin are more loosely organized C) in smooth muscle intercalated discs are found between the fibers D) in smooth muscle the T tubules allow efficient transmission of the action potential E) smooth muscle has fewer layers than skeletal muscle