اناٹومی مطالعاتی نوٹ · Thorax

Serratus posterior muscles

Two thin, flat muscles forming the intermediate layer of the back muscles, one at the upper and one at the lower ribs.

اہم نکات

Superior: down and out to the upper ribs. Inferior: up and out to the lower ribs.
Intercostal nerves.
Probably proprioceptive more than respiratory.
Trunk muscles: from myotomes of the somites.
Dorsal part → dorsal-ramus muscles; ventral part → ventral-ramus muscles.
Skeletal muscle: multinucleated, peripheral nuclei, striated.
Epimysium → perimysium → endomysium.

Origin · Insertion · Action · Nerve supply · Histology · Development

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