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The sternocleidomastoid muscle originates from two locations: the manubrium of the sternum and the clavicle. [4] It travels obliquely across the side of the neck and inserts at the mastoid process of the temporal bone of the skull by a thin aponeurosis. [4] [5] The sternocleidomastoid is thick and narrow at its center, and broader and thinner ...
The triangles of the neck describe the divisions created by the major muscles in the region.. The side of the neck presents a somewhat quadrilateral outline, limited, above, by the lower border of the body of the mandible, and an imaginary line extending from the angle of the mandible to the mastoid process; below, by the upper border of the clavicle; in front, by the middle line of the neck ...
"Erb's point" is also a term used in head and neck surgery to describe the point on the posterior border of the sternocleidomastoid muscle, approximately 2-3cm above the clavicle, overlying the transverse process of the sixth cervical vertebra, [3] where the four superficial branches of the cervical plexus—the greater auricular, lesser ...
Neck, Clavicular, Right, left base of mandible: inferior clavicle and fascia of chest: branches of submental artery, branches of suprascapular artery: cervical branch of facial nerve [CNVII] tenses skin of neck: masseter, temporalis: 2 1 sternocleidomastoid: Neck, Clavicular, Right, left manubrium sterni (sternal head), medial portion of ...
The sternocleidomastoid muscle gets its blood from different arteries in the neck, which bring oxygen and nutrients to keep the muscle healthy. Torticollis can happen when there are issues with the sternocleidomastoid muscle, like if it's too short, causing the head and neck to be in an odd position. [ 25 ]
Apex: Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone. Anteriorly: Posterior border of the sternocleidomastoideus. Posteriorly: Anterior border of the trapezius. Inferiorly: Middle one third of the clavicle. Roof: Investing layer of the deep cervical fascia. Floor: (From superior to ...
Midline of the neck from chin to the jugular notch Posterior boundary: The anterior margin of sternocleidomastoid: Superior boundary (base) The lower border of the body of the mandible, and a line extending from the angle of the mandible to the mastoid process
It surrounds the neck like a collar, it splits around the sternocleidomastoid muscle and the trapezius muscle. It is attached as; Posteriorly - Ligamentum nuchae; Anteriorly - Attached to the hyoid bone; Superiorly - (from backwards to forwards); External occipital protuberance and superior nuchal line of occipital bone; Mastoid process of ...