객관식
In an introductory anatomy and physiology context, the peripheral nervous system (PNS) consists primarily of which structures?
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13. The Peripheral Nervous System
Introduction to the Peripheral Nervous System
객관식
In the peripheral nervous system, which functional classification of neurons carries signals from the central nervous system to initiate skeletal muscle contraction and activate glands?
A
Pseudounipolar neurons
B
Sensory (afferent) neurons
C
Interneurons (association neurons)
D
Motor (efferent) neurons
검증된 단계별 안내1
Step 1: Understand the functional classifications of neurons in the peripheral nervous system (PNS). There are primarily sensory (afferent) neurons, motor (efferent) neurons, and interneurons (association neurons).
Step 2: Recognize that sensory (afferent) neurons carry signals from sensory receptors toward the central nervous system (CNS), meaning they transmit incoming information.
Step 3: Know that interneurons (association neurons) are located entirely within the CNS and serve to process and integrate information between sensory and motor neurons.
Step 4: Identify that motor (efferent) neurons carry signals away from the CNS to effector organs such as skeletal muscles and glands, initiating actions like muscle contraction and gland activation.
Step 5: Conclude that the neurons responsible for carrying signals from the CNS to initiate skeletal muscle contraction and activate glands in the PNS are motor (efferent) neurons.
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