Sternocleidomastoid Anatomy Origin Insertion amp Action

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⭐ Sternocleidomastoid Muscle Anatomy ⭐ • 💪 Origin: Sternal Head: Manubrium of sternum (superior and anterior aspect). Clavicular Head: Medial quarter of clavicle’s superior surface. • 💪 Insertion: Mastoid process of temporal bone anterior portion of superior nuchal line. • 💪 Action: Unilateral contraction: Ipsilateral flexion and contralateral rotation. Bilateral contraction: Head/neck extension, head/neck flexion, assists in inspiration by elevating clavicle and manubrium of sternum. • 💪 Nerve: Accessory nerve (CN XI) branches of cervical plexus (C2-C3). • 💪 Artery: Occipital artery, superior thyroid artery suprascapular arteries. • Chapters: • 0:00 - Intro • 0:13 - Location overview of the sternocleidomastoid • 1:05 - Origin of the sternocleidomastoid • 2:08 - Insertion of the sternocleidomastoid • 3:52 - Actions of the sternocleidomastoid • ⭐ Want to learn more about the sternocleidomastoid? Then check out the full article on the Bodyworks Prime website: • https://bodyworksprime.com/sternoclei... • ⭐ If you would like some help memorising the sternocleidomastoid's information then be sure to check out the free flashcards here: https://bodyworksprime.com/sternoclei... • #BodyworksPrime #Anatomy #Sternocleidomastoid

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