serratus posterior inferior
A student points to the serratus posterior inferior on a detailed anatomical chart.
Noun: A skeletal muscle located in the lower back. It is a thin, four-sided muscle situated where the thoracic (chest) region meets the lumbar (lower back) region. Its primary function is to oppose or counteract the downward pulling action of the diaphragm on the lower ribs during breathing.
This term is used specifically in anatomical, medical, and physiological contexts to describe this particular muscle. * The serratus posterior inferior assists in forced exhalation by depressing the lower ribs. * Pain in this area can sometimes be attributed to a strained serratus posterior inferior.
- Clinical Context: The muscle is often discussed in relation to respiratory mechanics or as a potential source of referred pain in the lower back.
- Dysfunction of the serratus posterior inferior can contribute to a restrictive breathing pattern.
- Serratus posterior superior (noun): The corresponding muscle in the upper back that elevates the ribs.
- Serratus (noun): Refers to any of several muscles arising in serrated fashion from the ribs (e.g., serratus anterior).
- Inferior posterior serratus muscle (noun, technical)
- Musculus serratus posterior inferior (noun, full Latin anatomical name)
- Antagonist (noun): In this context, the diaphragm is a functional antagonist to the serratus posterior inferior during exhalation.
- Accessory muscle of respiration (noun phrase): A category that includes muscles like the serratus posterior inferior that assist in breathing beyond the primary diaphragm and intercostal muscles.
A student points to the serratus posterior inferior on a detailed anatomical chart.
- a thin quadrilateral muscle at the junction of the thoracic and lumbar regions; acts to counteract the pull of the diaphragm on the ribs to which it is attached