Inferior laryngeal nerve, from the recurrent laryngeal nerve, a branch of the vagus nerve (X) This muscle causes the furrowed brow of the worried lookĭraws the muscular process of the arytenoid cartilage anteriorly, which pivots the arytenoid cartilage and adducts the vocal folds Temporal branch of the facial nerve (VII) The most internal of the three pharyngeal constructor mm. Pharyngeal tubercle and midline pharyngeal raphe Medial pterygoid plate, pterygoid hamulus, pterygomandibular raphe, mylohyoid line of mandible Of the three pharyngeal constrictors, this one is intermediate in both superior/inferior position and depth Lesser and greater horns of the hyoid bone and the inferior part of the stylohyoid ligament The most external of the three pharyngeal constructor mm. Vagus (X), via the pharyngeal plexus, with aid from the superior laryngeal and recurrent laryngeal nervesĪscending pharyngeal a., superior thyroid a., inferior thyroid a. Oblique line of the thyroid cartilage, lateral surface of cricoid cartilage Relaxation of the suspensory ligament allows the lens to thicken for accommodation Parasympathetic fibers in the oculomotor nerve (III), synapsing in the ciliary ganglion Relaxes the suspensory ligament of the lens Meridional fibers: ciliary process circular fibers: encircle the ciliary process Meridional fibers: scleral spur circular fibers: encircle the ciliary process Medial side of the lesser horn and body of the hyoid boneĪscends to blend with the intrinsic tongue musculatureĬhondroglossus is often considered to be part of the hyoglossus muscle Pulls the corner of mouth laterally presses the cheek against the teethīuccal branches of the facial nerve (VII)Īlthough 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) Pterygomandibular raphe, mandible, and the maxilla lateral to the molarĪngle of mouth and the lateral portion of the upper and lower lips The auricular muscles are derived from the mesenchyme of the second pharyngeal arch, as are the muscles of facial expression Superficial temporal a., posterior auricular a. the arytenoideus is often considered to be one muscle with oblique and transverse partsĪnterior: galea aponeurotica anterior to ear superior: galea aponeurotica superior to ear posterior: mastoid processĪuricle anteriorly, superiorly and posteriorlyĪnterior & superior: temporal branches of facial nerve (VII) posterior: posterior auricular branch of facial nerve (VII) The transverse arytenoid m.lies anterior to the oblique arytenoid m. Inferior laryngeal nerve, from recurrent laryngeal nerve, a branch of the vagus nerve (X) Posterior surface of the contralateral arytenoid cartilage Posterior surface of the arytenoid cartilage the arytenoideus is often considered to be one muscle with oblique and transverse fibers lies posterior to the transverse arytenoid m. Posterior surface of the contralateral arytenoid cartilage, near its apexĭraws arytenoid cartilages together, adducting the vocal folds Muscular process of the arytenoid cartilage The mucosa is raised by the underlying aryepiglottic m. Inferior laryngeal nerve, from recurrent laryngeal nerve, a branch of the of vagus (X) The inferior fibers are horizontal and continuous with the circular fibers of the esophagus the rest ascend, increasing in obliquity, and overlap the Constrictor medius.Anterior tubercles of the transverse processes of vertebrae C3-C6Įlevates the first rib flexes and laterally bends the neckĪscending cervical a., a branch of the thyrocervical trunkĪ 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 surfaceĪpex (superior part) of the arytenoid cartilageĭraws the epiglottis posteriorly and downward during swallowing From these origins the fibers spread backward and medialward to be inserted with the muscle of the opposite side into the fibrous raphé in the posterior median line of the pharynx. On the thyroid cartilage it arises from the oblique line on the side of the lamina, from the surface behind this nearly as far as the posterior border and from the inferior cornu. From the cricoid cartilage it arises in the interval between the Cricothyreoideus in front, and the articular facet for the inferior cornu of the thyroid cartilage behind. The Inferior constrictor (Constrictor pharyngis inferior) the thickest of the three constrictors, arises from the sides of the cricoid and thyroid cartilage. Nerve: External laryngeal branch of thevagus
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |