Muscles3 - Muscles of the Head and Neck - Listed...

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Muscles of the Head and Neck - Listed Alphabetically Muscle Origin Insertion Action Innervation Artery Notes anterior scalene anterior tubercles of the transverse processes of vertebrae C3-C6 scalene tubercle of the first rib elevates the first rib; flexes and laterally bends the neck brachial plexus, C5-C7 ascending cervical a., a branch of the thyrocervi cal trunk a muscle of inspiration; an important landmark of the neck; it is located between the subclavian vein and the subclavian artery; the roots of the brachial plexus pass posterior to it; the phrenic nerve crosses its anterior surface aryepiglottic apex (superior part) of the arytenoid cartilage epiglottis draws the epiglottis posteriorly and downward during swallowing inferior laryngeal nerve, from recurrent laryngeal nerve, a branch of the of vagus (X) laryngeal br. of the superior thyroid a. the mucosa is raised by the underlying aryepiglottic m. to form the aryepiglottic fold arytenoid, oblique muscular process of the arytenoid cartilage posterior surface of the contralate ral arytenoid cartilage, near its apex draws arytenoid cartilages together, adducting the vocal folds inferior laryngeal nerve, from recurrent laryngeal nerve, a branch of the of vagus (X) laryngeal br. of the superior thyroid a. the oblique arytenoid m. lies posterior to the transverse arytenoid m.; the arytenoideus is often considered to be one muscle with oblique and transverse fibers arytenoid, transverse posterior surface of the arytenoid cartilage posterior surface of the contralate ral arytenoid cartilage draws arytenoid cartilages together, adducting the vocal folds inferior laryngeal nerve, from recurrent laryngeal nerve, a branch of the vagus nerve (X) laryngeal br. of the superior thyroid a. the transverse arytenoid m.lies anterior to the oblique arytenoid m.; the arytenoideus is often considered to be one muscle with oblique and transverse parts auricular anterior: galea aponeuroti ca anterior to ear; superior: galea aponeuroti ca superior to ear; posterior: mastoid process auricle anteriorly , superiorly and posteriorl y wiggle the ears anterior & superior: temporal branches of facial nerve (VII); posterior: posterior auricular branch of facial nerve (VII) superficia l temporal a., posterior auricular a. the auricular muscles are derived from the mesenchyme of the second pharyngeal arch, as are the muscles of facial expression
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buccinator pterygoma ndibular raphe, mandible, and the maxilla lateral to the molar teeth angle of mouth and the lateral portion of the upper and lower lips pulls the corner of mouth laterally; presses the cheek against the teeth buccal branches of the facial nerve (VII) facial a. although the buccinator is important in mastication, it is innervated by the buccal branch of the facial nerve and NOT by the buccal nerve from V3 (a sensory nerve) chondroglos sus medial side of the lesser horn and body of the hyoid bone ascends to blend with the intrinsic tongue musculatu re pulls the sides of the
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This note was uploaded on 04/01/2008 for the course MED Anatomy taught by Professor ? during the Spring '08 term at University of Michigan.

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Muscles3 - Muscles of the Head and Neck - Listed...

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