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The posterior scalene, (Latin: scalenus posterior) is the smallest and most deeply seated of the scalene muscles. It arises, by two or three separate tendons, from the posterior tubercles of the transverse processes of the lower two or three cervical vertebrae, and is inserted by a thin tendon into the outer surface of the second rib, behind ...
Insertion The attachment point of the muscle, on a bone or otherwise, that moves during the action. Artery The artery which supplies the muscle with blood. The term "artery" is included to avoid confusing columns. Nerve The nerve(s) which tell the muscle to act (innervates the muscle). The term "nerve" is included for clarity. Action
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.
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]
Scalenus: originates on the cranial and lateral side of the first rib, inserts into the transverse process of the cervical vertebrae (C4-C7). Semispinalis capitis: originates on the cervical vertebrae and first 6-7 thoracic vertebrae. Inserts on the occipital bone, ventral to the nuchal crest.
A figure of speech or rhetorical figure is a word or phrase that intentionally deviates from straightforward language use or literal meaning to produce a rhetorical or intensified effect (emotionally, aesthetically, intellectually, etc.). [1] [2] In the distinction between literal and figurative language, figures of
The sites of origin of the muscles collectively are the pterygoid hamulus (and occasionally the adjoining posterior margin of the medial pterygoid plate) anteriorly, (the posterior margin of) the pterygomandibular raphe, the posterior extremity of the mylohyoid line of mandible, and (negligibly) the side of the tongue.
Origin Insertion Innervation Sternohyoid: Posterior surface of manubrium sterni, adjoining parts of clavicle and the posterior sternoclavicular ligament: Medial part of lower border of hyoid bone: Ansa cervicalis: Sternothyroid: Posterior surface of manubrium sterni and adjoining part of first costal cartilage: Oblique line of thyroid cartilage ...