Check all that apply. The dorsal ramiCheck All That Applyform nerve plexuses.form nerve plexuses.innervate deep muscles of the dorsal trunk.innervate deep muscles of the dorsal trunk.innervate intercostal muscles.innervate intercostal muscles.innervate skin near the midline of the back.innervate skin near the midline of the back.
Question
Check all that apply. The dorsal ramiCheck All That Applyform nerve plexuses.form nerve plexuses.innervate deep muscles of the dorsal trunk.innervate deep muscles of the dorsal trunk.innervate intercostal muscles.innervate intercostal muscles.innervate skin near the midline of the back.innervate skin near the midline of the back.
Solution
The dorsal rami:
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Do not form nerve plexuses. Nerve plexuses are networks of intersecting nerves. They combine sets of spinal nerves that serve the same area of the body into one large grouped nerve. The dorsal rami do not form these plexuses.
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They do innervate deep muscles of the dorsal trunk. The dorsal rami are responsible for sending signals to and from the muscles and skin of the back.
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They do not innervate intercostal muscles. The intercostal muscles, which are located between the ribs, are innervated by the intercostal nerves, not the dorsal rami.
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They do innervate skin near the midline of the back. The dorsal rami carry sensory information from the skin of the back to the brain.
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