serratus posterior
Definition
- Noun:
- A skeletal muscle that draws the rib cage backward and downward: The "serratus posterior" is one of two specific muscles in the human back (serratus posterior superior and serratus posterior inferior) involved in the movement of the ribs during respiration.
Usage Examples
- Noun:
- The serratus posterior inferior muscle helps to depress the lower ribs.
- Pain can sometimes be attributed to a strained serratus posterior.
- During forced exhalation, the serratus posterior muscles are engaged.
Advanced Usage
- Anatomical Context: The term is almost exclusively used in anatomical, medical, or kinesiological contexts. It is typically specified as either the serratus posterior superior (which elevates the ribs) or the serratus posterior inferior (which depresses the ribs).
- The neurologist tested the function of the serratus posterior inferior.
Variants and Related Words
- Serratus posterior superior (n): The upper of the two muscles, which draws the rib cage upward and backward.
- Serratus posterior inferior (n): The lower of the two muscles, which draws the rib cage downward and backward.
- Serratus (n): A related category of muscles, most notably the serratus anterior, which is on the side of the chest and moves the scapula.
Synonyms
- Posterior serratus muscle: A less common alternative name.
- There are no common layman's synonyms for this specific anatomical term.
Related Phrases
- Posterior thoracic muscles: A broader category that includes the serratus posterior muscles.
- Muscles of respiration: A functional group to which the serratus posterior muscles belong.
Notes
- This is a specialized anatomical term. It is not used in everyday conversation and has no associated idioms or phrasal verbs.
Noun
-
skeletal muscle that draws the rib cage backward and downward
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