Scalenus minimus muscle
Musculus scalenus minimus
- Eponym: Sibson’s muscle
- Related terms: Scalenus minimus; Scalenus minimus muscle
Definition
Origin: Anterior tubercle of transverse process of C6 or C7
Insertion: First rib - Suprapleural membrane (Sibson's fascia)
Artery: Ascending cervical artery, superficial cervical artery
Nerve: C7-C8
Action: Elevates the first rib - Supports suprapleural membrane
Description:
Extra muscle occasionally present between the scalenus anterior and medius, and having the same action and innervation.
References
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
