NERVOUS SYSTEM SPECIAL SENSE
SPINALCORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There are pairs of spinal nerves that exit the spinal cord.
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The spinal cord extends inferiorly to the level of the fifth lumbar vertebra.
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The spinal cord is anchored to the coccyx by the filum terminale.
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Gray matter is superficial to the white matter of the spinal cord.
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Detailed explanation-1: -Your spinal cord is the long, cylindrical structure that connects your brain and lower back. It contains tissues, fluids and nerve cells. A bony column of vertebrae surrounds and protects your spinal cord. Your spinal cord helps carry electrical nerve signals throughout your body.
Detailed explanation-2: -Answer and Explanation: The answer is (A): all spinal nerves are mixed. All spinal nerves carry both motor and sensory fibers. Motor fibers exit the spinal cord via the ventral roots, whereas the sensory fibers enter the spinal cord through the dorsal roots.
Detailed explanation-3: -There are 31 pairs of spinal nerves and roots. Eight pairs of cervical nerves exit the cervical cord at each vertebral level. One member of the pair exits on the right side and the other exits on the left. The first cervical root exits above the C1 vertebra.
Detailed explanation-4: -It’s the nervous system’s HQ. It controls voluntary and involuntary movements. It’s a conductor. An injury can disrupt these signals. It can’t repair itself. It ends in a Horse’s Tail. It’s highly protected. It’s divided into 31 segments. More items •28-Aug-2022