sacral nerve

Thân thiện

A doctor points to a diagram of the sacral nerve in a medical textbook.

Definition

Noun: A sacral nerve is any one of the five paired spinal nerves that originate from the sacral segment of the spinal cord. These nerves are part of the peripheral nervous system and are crucial for motor and sensory functions in the pelvis, buttocks, genitals, thighs, legs, and feet.

Usage

The term "sacral nerve" is used in anatomical, medical, and clinical contexts to refer to these specific nerves, often identified by number (e.g., S1, S2). - The sacral nerves emerge through openings in the sacrum bone. - Damage to a sacral nerve can affect bladder control.

Examples

Advanced Usage

• Sacral nerve stimulation: A medical therapy involving electrical impulses to a sacral nerve to treat conditions like urinary incontinence.
  • Sacral nerve stimulation has improved her quality of life significantly.

Variants and Related Words

• Sacral plexus (noun): A network of nerve fibers formed by the ventral rami of the sacral nerves.
• Sacral vertebra (noun): Any of the five fused vertebrae forming the sacrum, from which the sacral nerves emerge.
• Sacral (adjective): Pertaining to the sacrum or the sacral nerves (e.g., sacral region).

Synonyms

• Spinal nerve (general term for nerves emerging from the spinal cord, which includes sacral nerves).
• Nerve root (refers to the initial segment of a spinal nerve).

Related Terms and Phrases

• Nerve impingement: When a nerve, such as a sacral nerve, is compressed.
• Nerve function: Refers to the sensory and motor capabilities of a nerve.
• Autonomic function: Some sacral nerves are involved in autonomic (involuntary) functions like bowel control.

Học thuật

Noun

1. any of five pairs of spinal nerves emerging from the sacral region of the spinal cord