Definition

Noun: * A skeletal muscle located on the back, specifically one of two muscles (serratus posterior superior or serratus posterior inferior) that connect the vertebrae to the ribs. Its primary function is to draw the rib cage backward and downward, assisting in movements of the ribs and trunk.

Usage

This is a specific anatomical term. It is used in medical, biological, and fitness contexts to describe a particular muscle group. * The musculus serratus posterior is part of the intermediate layer of the intrinsic back muscles. * Damage to the musculus serratus posterior can contribute to certain types of back pain.

Examples

• During the dissection, the students carefully identified the musculus serratus posterior beneath the trapezius and rhomboid muscles.
• The musculus serratus posterior inferior is often involved in forced exhalation.
• A strain of the musculus serratus posterior can mimic the pain of a rib injury.

Advanced Usage

• The term is frequently specified as one of its two main parts:
  • Musculus serratus posterior superior: The upper portion, which elevates the ribs.
  • Musculus serratus posterior inferior: The lower portion, which depresses the ribs.

Variants and Related Words

• Serratus posterior (noun): A common abbreviated form of the full term "musculus serratus posterior."
• Serratus (noun): Refers to any of several muscles arising from or inserted by a series of slips, resembling the edge of a saw. The musculus serratus posterior belongs to this group.
• Skeletal muscle (noun): The broader category of muscle type to which it belongs.

Synonyms

• Posterior serratus muscle (noun): An alternative word order with the same meaning.
• Serratus posterior muscle (noun): The most common synonym, dropping the Latin "musculus."

Different Meanings

This term has only one specific anatomical meaning. It does not have common idiomatic or figurative uses.

Noun

1. skeletal muscle that draws the rib cage backward and downward