Nerve impulses leading to the skeletal muscle carry information to direct movement. The nerve fibers sending these signals will most likely belong to which division of the nervous system?

Question

BlackTom AI · Accepted Answer

The question asks about the division of the nervous system that contains the nerve fibers sending signals to skeletal muscle to direct movement.

Option a) sensory (afferent) division: This division conducts sensory information from the periphery to the CNS, not motor commands to muscles. It is not responsible for directing movement, so this is not the correct source of motor signals to skeletal muscle.

Option b) autonomic nervous system: The autonomic system governs involuntary processes (like heart rate, digestion, gland activity). It does not primarily control skeletal muscle contractions, which are voluntary, so this option is not appropriate for direct motor control of skeletal muscles.

Option c) parasympathetic division: A subdivision of the autonomic system, mainly involved in rest-and-digest activities. It also does not direct voluntary skeletal muscle movement, making this choice incorrect for the given scenario.

Option d) sympathetic division: Another autonomic subdivision involved in fight-or-flight responses. Like the parasympathetic division, it does not execute voluntary skeletal muscle movements, so this option is not suitable here.

Option e) somatic nervous system: This division handles voluntary control of skeletal muscles via motor neurons that innervate skeletal muscle fibers. It is the pathway responsible for directing movement, aligning with what the question describes.

In summary, the signals that directly direct skeletal muscle movement are carried by the somatic nervous system, whereas the other options pertain to sensory transmission or autonomic (involuntary) control, which do not govern voluntary skeletal muscle movement.

Nerve impulses leading to the skeletal muscle carry information to direct movement. The nerve fibers sending these signals will most likely belong to which division of the nervous system?

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