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How are the 31 pairs of spinal nerves distributed throughout the human body and what functions do they serve?
The 31 pairs of spinal nerves are distributed throughout the human body, with each pair connected to a specific region of the body. These nerves serve important functions such as transmitting sensory information from the body to the brain and controlling muscle movements.
What structure passes through each intervertebral foramen?
A spinal nerve passes through each intervertebral foramen. These nerves exit the spinal cord and branch out to various parts of the body to facilitate communication between the brain and the rest of the body.
How many oairs of cranial nerves are there?
There are 12 pairs of cranial nerves, each with specific functions related to sensory, motor, or mixed functions in the head and neck regions.
Why are there 31 pairs of spinal nerve yet you only have 30 vertebrae?
There are 31 pairs of spinal nerves because the first cervical nerve exits above the first cervical vertebra. The remaining spinal nerves exit below their corresponding vertebrae. Therefore, there is one more pair of spinal nerves than there are vertebrae in the spinal column.
What do all cranial nerves control?
Cranial nerve V. is the trigeminal nerve. It got its name after its three branches. Two of the branches are pure sensory, the third is mixed motor and sensory. In short, it gathers sensory information from the scalp, eyelids, eyes (from the cornea and conjuntiva, NOT visual information), nose, cheeks, lips, teeth, gums, oral cavity and jaw. The motor fibers innervate muscles involved in chewing and swallowing.
