Spinal nerves from the sacral region of the cord innervate the ________ muscles.
A) shoulder
B) intercostal
C) abdominal
D) leg
E) facial

Question

Quizplus · Accepted Answer

The sacral region of the spinal cord innervates the muscles of the legs, including the gluteal muscles, quadriceps, and hamstrings. Choice A is incorrect because shoulder muscles are innervated by spinal nerves from the cervical and brachial regions of the cord. Choice B is incorrect because intercostal muscles are innervated by spinal nerves from the thoracic region of the cord. Choice C is incorrect because abdominal muscles are innervated by spinal nerves from the thoracic and lumbar regions of the cord. Choice E is incorrect because facial muscles are innervated by cranial nerves, not spinal nerves.

Spinal Nerves from the Sacral Region of the Cord Innervate