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Rhomboid minor muscle



Rhomboid minor
Muscles connecting the upper extremity to the vertebral column. (Rhomboideus minor visible at upper center right, near shoulder.)
Latin musculus rhomboideus minor
Gray's subject #121 434
Origin: nuchal ligaments and spinous processes of C7 to T1 vertebrae
Insertion: medial border of the scapula, superior to the insertion of rhomboid major muscle
Artery: dorsal scapular artery
Nerve: dorsal scapular nerve (C4 and C5)
Action: Retracts the scapula and rotates it to depress the glenoid cavity. It also fixes the scapula to the thoracic wall.
Antagonist: Serratus anterior muscle
Dorlands/Elsevier m_22/12550544

The Rhomboideus minor arises from the lower part of the ligamentum nuchæ and from the spinous processes of the seventh cervical and first thoracic vertebræ.

It is inserted into the vertebral border (aka the medial border) near the point that it meets the spine of the scapula. It is usually separated from the Rhomboideus major by a slight interval, but the adjacent margins of the two muscles are occasionally united. The Rhomboideus minor is superior to the Rhomboideus major.

Additional images

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e
List of muscles of upper limbs
VERTEBRAL COLUMNtrapezius - latissimus dorsi - rhomboid (major, minor) - levator scapulae
THORACIC WALLSpectoralis major - pectoralis minor - subclavius - serratus anterior
SHOULDERdeltoid - rotator cuff (supraspinatus, infraspinatus, teres minor, subscapularis) - teres major
ARManterior compartment: coracobrachialis - biceps brachii - brachialis
posterior compartment: triceps brachii - anconeus
FOREARManterior compartment: super. - pronator teres - palmaris longus - flexor carpi radialis - flexor carpi ulnaris - flexor digitorum superficialis - deep - pronator quadratus - flexor digitorum profundus - flexor pollicis longus
posterior compartment: super. - mobile wad (brachioradialis, extensor carpi radialis longus and brevis) - extensor digitorum, - extensor digiti minimi - extensor carpi ulnaris - deep - supinator - anatomical snuff box (abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus) - extensor indicis
HANDlateral volar - thenar (opponens pollicis, flexor pollicis brevis, abductor pollicis brevis, adductor pollicis)

medial volar - palmaris brevis - hypothenar (abductor minimi digiti, flexor digiti minimi brevis, opponens digiti minimi)

intermediate - lumbrical - dorsal interossei - palmar interossei
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Rhomboid_minor_muscle". A list of authors is available in Wikipedia.
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