Search results
Results from the WOW.Com Content Network
The anterior scalene muscle (Latin: scalenus anterior), lies deeply at the side of the neck, behind the sternocleidomastoid muscle.It arises from the anterior tubercles of the transverse processes of the third, fourth, fifth, and sixth cervical vertebrae, and descending, almost vertically, is inserted by a narrow, flat tendon into the scalene tubercle on the inner border of the first rib, and ...
On the right, it lies on the anterior scalene muscle and crosses anterior to the 2nd part of the subclavian artery. On both sides, the phrenic nerve usually runs posterior to the subclavian vein as it enters the thorax where it runs anterior to the root of the lung and between the fibrous pericardium and mediastinal parietal pleura. [2]
The scalene tubercle is a small projection that runs along the medial border of the first rib between two grooves, which travel anteriorly for the subclavian artery and posteriorly for the subclavian vein. It projects outward medially, and is the site of insertion for scalenus anterior. [1] [2]
It also provides motor nerves for the longus capitis, longus colli, anterior scalene, middle scalene, and levator scapulae muscles. [citation needed] C4 contributes some sensory fibers to the supraclavicular nerves, responsible for sensation from the skin above the clavicle. [1]
The suprascapular artery and transverse cervical artery both head laterally and cross in front of (anterior to) the anterior scalene muscle and the phrenic nerve. The inferior thyroid artery runs superiorly from the thyrocervical trunk to the inferior portion of the thyroid gland. There is significant variation in the origin of these vessels.
The long thoracic nerve arises from the anterior rami of cervical spinal nerves C5, C6, and C7. [1] [2] [3] The root from C7 may occasionally be absent. [4]The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle.
What links here; Related changes; Upload file; Special pages; Permanent link; Page information; Cite this page; Get shortened URL; Download QR code; Wikidata item
Strengthening, especially of (1) the middle and lower back support muscles and scapula retractors, and (2) the longus colli and the deep neck flexor muscles. [35] Stretching muscles that cause neck protrusion, especially of the upper fibres of the trapezius muscle. [36] Lower cervical flexors: sternocleidomastoid, anterior and middle scalene ...