Serratus Posterior Inferior

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Superficial intrinsic back muscles Right side posterior view¹

Superficial intrinsic back muscles posterior view¹

Muscle	Origin	Insertion	Innervation	Action
Serratus posterior inferior

Origin

T11-L2 (SP)¹

Insertion

8-12th ribs (inferior borders near angles)¹

Innervation

Spinal nn. T9-T12 (Anterior rami)¹

Action

Depresses ribs

Muscle groups

Rectus capitis anterior is part of the prevertebral muscle group

Palpation

Clinical significance

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.