The pharyngeal raphe is described traditionally as a straight, continuous, median, fibrous band that provides attachment for and separates each pair of the three constrictor muscles of the pharynx. It is funnelshaped with its upper end being wider and located just below the lower surface of the skull, and its lower end is narrower and located at the level of the. The occipital bone is a trapezoid skull bone that contributes to the posteroinferior part of the cranial vault. Learn how to say pharyngeal with emmasaying free pronunciation tutorials. Anatomy, head and neck, pharynx statpearls ncbi bookshelf. For the superior pharyngeal constrictor muscle, it acts as the point of connection. Inferior pharyngeal constrictor muscle, cuneiform tubercle, corniculate tubercle, transverse and oblique arytenoid muscles, posterior cricoarytenoid muscle, cricopharyngeus muscle part of, inferior pharyngeal constrictor muscle, longitudinal esophageal muscle, basilar part of occipital bone pharyngeal tubercle, pharyngeal. The slit that contains levator veli palatini muscle, the pharyngotympanic tube and an upward projection of pharyngobasilar fascia separates the superior border of the superior constrictor muscle from the base. Attaches to pharyngeal tubercle of occipital bone, petrous portion of temporal bone, and medial pterygoid of sphenoid. A terminal segment includes a tubercle that projects dorsally and an anus. Even more anterior to the foramen magnum is the pharyngeal tubercle, the attachment site of the fibrous raphe of the pharynx. It is trapezoidal in shape and curved on itself like a shallow dish.
Lies internal to pharyngeal muscles, forms a strong fibrous submucosal layer. Components orbicularis oris buccinator pterygomandibular raphae superior constrictor of pharynx opposing the buccinator mechanism there is a very powerful muscle tongue. Well defined superiorly, giving way to musculature inferiorly. The pharyngeal tubercle is located nearly 1 cm anterior as well as superior towards the foramen magnum and corresponds to the attachment points of the pharyngeal raphe along with the anterior longitudinal ligament and is hypothetically said to. The occipital bone is the most posterior cranial bone and the main bone of the occiput. The superior pharyngeal constrictor muscle is one of the pharyngeal constrictor muscles.
The longus capitis is inserted into the bone lateral to the pharyngeal tubercle, and the rectus. Mcqs for netters head and neck anatomy for dentistry. Its fibers pass dorsally from an extensive anterior attachment to insert on the pharyngeal raphe, the pharyngeal tubercle of the occipital bone. It is pierced by the foramen magnum, permitting communication from the. Pharyngeal tubercle of basilar part of occipital bone. Telegnathic surgery for obstructive sleep apnea intechopen. Genioglossus muscle is a major pharyngeal dilator that plays an important role in osa pathophysiology. The tendinous origins unite to form a muscular band that courses superiorly to insert onto the occiput anterior to the foramen magnum figure 232. Furthermore, although the pharyngeal tubercle is the classic palpable landmark to verify the midline and the level of c1. This article incorporates text in the public domain from page 2 of the 20th edition of grays anatomy 1918. The blood supply of the scaphoid comes from the radial artery, feeding the bone on the dorsal surface near the tubercle and scaphoid waist.
Uams department of neurobiology and developmental sciences. This muscular band attaches onto the region of the occiput anterior to the foramen magnum and posterior to the pharyngeal tubercle. The pharyngeal tubercle gives attachment to the upper end of fibrous raphe of the pharynx, where the constrictor muscles of pharynx are inserted. A pterygopharyngeal, buccopharyngeal, mylopharyngeal and a glossopharyngeal part. The levator veli palatini muscle, which elevates the soft palate, is innervated by a pharyngeal branch of the vagus nerve. The pharyngeal muscles receive innervation from the vagus and. This book is distributed under the terms of the creative commons. Each arm of the c begins at the posterior margin of the medial plate of the pterygoid process of the sphenoid bone, just inferior to the cartilaginous part of the pharyngotympanic tube. The material presented in these tables is contained in the book. It is common to both the alimentary and the respiratory tract. Lateral to the tubercle on either side is the attachment of longus capitis muscle.
It originates as thin tendons from the anterior tubercles of the transverse processes of c3 to c6. Hand atlas of human anatomy werner spalteholz download. The anterior margin of the foramen magnum gives attachment to the anterior. The posterior wall of the pharynx was dissected in 236 adult human cadavers of the mongoloid, caucasoid, and negroid races. Laterally, it covers the pharynx, superiorly inserting into the skull base through the pharyngeal tubercle, with the superior constrictor muscle. It is the main structure, in addition to the oral cavity, shared by two organ systems, i. Anatomy, head and neck, occipital bone, artery, vein, and. Professional health systems prohealthsys anatomy textbooks. Book now aarogyam c and other lab tests with a special discount of up to 70%. The pharyngeal tubercle is a part of the occipital bone of the head and neck. The pharyngeal tubercle gives attachment to the fibrous raphe of the pharynx, also known as the pharyngeal raphe. The longus capitis muscle functions to flex the head. The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle.
Bilaterally over the basilar portion of the occipital bone. The superior constrictor muscle is located anterior to the prevertebral muscles and posterior to the buccinator muscle, from which it is separated by the pterygomandibular raphe. Skull cranial skeleton neurocranium calarvia frontal, temporal, parietal, occipital cranial base. The tendinous origins unite to form a distinct muscular band that courses superiorly toward the occiput. Skin and muscle of the upper lip labii superioris elevates the upper lip. The lateral condyle is the lateral portion of the upper extremity of tibia. Buccinator mechanism it is a continuous muscle band that encircles the dentition and is anchored at the pharyngeal tubercle. Attachment of the pharyngobasilar fascia to the cranial base posterior to anterior. The peroneal retinacula are fibrous retaining bands which bind down the tendons of the peroneus longus and brevis as they run across the side of the ankle. Going from superficial to deep, the scalp layers are skin, dense connective. On either side of the midline of its inferior surface, the basilar part provides muscular attachment of the longus capitis and rectus capitis anterior muscles.
Pharyngeal muscles computer science flashcards quizlet. Longus capitis muscle an overview sciencedirect topics. The tubercles have rounded surface and irregular shape. It is considered a flat bone, like all other cranial bones, meaning that its primary function is either for protection or to provide a broad surface for muscle attachment. The facia attaches to the basilar portion of occipital bone in front of pharyngeal tubercle, extends laterally to attach to petrous portion of temporal bone, and turns forward to cartilage of the auditory tube, medial pterygoid plate, and pterygomandibular raphe. On the lower surface of the basilar part of occipital bone, about 1 cm. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. The occipital bone is a cranial dermal bone and the main bone of the occiput. Skeletal framework 2 sides of the pharyngeal wall are welded together posteriorly in the midline by a vertically oriented cordlike ligament pharyngeal raphe from pharyngeal tubercle on the base of the skull to the level of cervical vertebra c6. Pharyngeal tubercle wikimili, the free encyclopedia. Pharyngeal tubercle structure detail anatomyexpert. Superior attachment there is an irregular cshaped line of pharyngeal wall attachment on the base of the skull. The tube begins at the base of the skull and ends inferior to the cricoid cartilage c6.
The pharyngeal tubercle gives connection to the upper terminal of fibrous raphe of the pharynx, where the constrictor muscles of pharynx are attached. Its primary action is constriction of the pharynx in coordination with the middle pharyngeal constrictor and the inferior pharyngeal constrictor muscles to deliver a bolus of food into the esophagus summary. The pharyngeal tubercle gives attachment to the fibrous raphe of the pharynx. The pharynx is a conductive structure located in the midline of the neck. The longus capitis is inserted lateral to the pharyngeal tubercle. The attachment of this fascia to the base of the skull fig. The procedure was called inferior sagittal osteotomy. The longus capitis muscle is located anterior and slightly lateral to the longus colli muscle. Longus capitis is a long flat muscle of the anterior neck. Superior attachments delineate limits of pharyngeal wall. Longus capitis muscle originates from its inferior aspect, as four small muscle straps that run from the anterior tubercles of transverse processes of the third, fourth, fifth and sixth cervical vertebrae. The scalp, which consists of five layers, covers the bone. The pharynx subdivisions blood supply teachmeanatomy.
The area in front of the tubercle forms the roof of the nasopharynx and supports the pharyngeal tonsil. Pharyngeal tubercle definition of pharyngeal tubercle by. The tubercle in front of the foramen magnum gives attachment to the superior constrictor muscle pharyngeal tuber. It is the highest located muscle of the three pharyngeal constrictors. The pharyngeal tubercle is a small median tubercle on the ventral surface of the basilar part of the occipital bone, for attachment of the pharyngobasilar fascia. This is the point of attachment for the superior pharyngeal constrictor muscle.
The superior pharyngeal constrictor muscle is a muscle in the pharynx. The point of attachment of the superior pharyngeal constrictor and its fibrous raphe on the inferior surface of the basilar part of the occipital bone. Other readers will always be interested in your opinion of the books youve read. Petrous part of the temporal bone medial to the carotid canal. Muscular portion of pharynx is suspended from this. A recession on each portion of the pharyngeal tubercle obtains the attachment of longus capitis.
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