Which statement(s) is/are true about efferent nerves? (Select all that apply.)
a. They transmit signals to the spinal cord and brain.
b. They leave the CNS to carry impulses to other body parts.
c. They are part of the peripheral nervous system.
d. They transmit signals that control contractions of smooth and skeletal muscle.
e. They transmit signals that control contractions of some glandular secretions.
ANS: B, C, D, E
Efferent nerves leave the CNS and carry impulses to other body parts that control contractions of smooth and skeletal muscles, as well as some glandular secretions. The efferent nerves, together with afferent nerves, make up the peripheral nervous system.
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