Nerve, pressor
A pressor nerve is a nerve which, when stimulated, causes the blood pressure to rise.
The word “pressor” refers to raising the blood pressure. It comes from the French “presser” meaning “to exert pressure” or “to squeeze.”
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- Nerve, recurrent laryngeal
One of the best known branches of the vagus nerve, a very long nerve that originates in the brainstem. After the recurrent laryngeal nerve leaves the vagus nerve, it goes down into the chest and then loops back up (“recurs”) to supply nerves to the larynx (the voice box). Damage to the recurrent laryngeal nerve […]
- Nerve, sciatic
The largest nerve in the body, the sciatic nerve begins from nerve roots in the lumbar part of the spinal cord (in the low back) and extends through the buttock area to send nerve endings down to the legs. Pain resulting from irritation of the sciatic nerve is called sciatica. The pain is typically felt […]
- Nerve, second cranial
Also known as the optic nerve. This nerve connects the eye to the brain and carries the impulses formed by the back layer of the eye (retina) to the brain, which interprets them as images. The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from […]
- Nerve, seventh cranial
The seventh cranial nerve is the facial nerve, a mixed nerve that has fibers both going out and coming in (both efferent and afferent fibers). It supplies the muscles of facial expression. The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from the vertebral column. […]
- Nerve, sixth cranial
to supply a muscle called the lateral rectus muscle that moves the eye outward. Paralysis of the abducens nerve causes inward turning of the eye (internal strabismus) leading to double vision. All 12 cranial nerves, the abducens nerve included, emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge […]