Serratus Posterior Inferior (Noun)
Meaning
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.
Classification
Nouns denoting body parts.
Examples
- The serratus posterior inferior muscle functions by exerting an upward pull on the lower border of the ninth to the eleventh ribs.
- During inhalation the serratus posterior inferior muscle helps the elevation of the lower border of the lung.
- It often seems like there is both an easy and a challenging way to use one's serratus posterior inferior muscle group on a rowing machine.
- Serratus posterior inferior, rhomboids and the trapezius muscle originate from the midline on the dorsal thoracic spine and the external occipital protuberance.
- This group of nerves includes branches innervating the serratus posterior inferior and also connective tissue that innervates this muscle from the thoracic region.