The occipital bone is a trapezoid skull bone that contributes to the posteroinferior part of the cranial vault. Muscular portion of pharynx is suspended from this. 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. The longus capitis is inserted lateral to the pharyngeal tubercle. Skull cranial skeleton neurocranium calarvia frontal, temporal, parietal, occipital cranial base. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
The superior pharyngeal constrictor muscle is one of the pharyngeal constrictor muscles. 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. Lies internal to pharyngeal muscles, forms a strong fibrous submucosal layer. A recession on each portion of the pharyngeal tubercle obtains the attachment of longus capitis.
Telegnathic surgery for obstructive sleep apnea intechopen. Attaches to pharyngeal tubercle of occipital bone, petrous portion of temporal bone, and medial pterygoid of sphenoid. Uams department of neurobiology and developmental sciences. The pharynx subdivisions blood supply teachmeanatomy. The tubercles have rounded surface and irregular shape. The pharyngeal tubercle is a part of the occipital bone of the head and neck. The anterior margin of the foramen magnum gives attachment to the anterior. 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 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. 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. Petrous part of the temporal bone medial to the carotid canal. A pterygopharyngeal, buccopharyngeal, mylopharyngeal and a glossopharyngeal part.
The superior pharyngeal constrictor muscle is a muscle in the pharynx. This article incorporates text in the public domain from page 2 of the 20th edition of grays anatomy 1918. Furthermore, although the pharyngeal tubercle is the classic palpable landmark to verify the midline and the level of c1. 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, also known as the pharyngeal raphe. It originates as thin tendons from the anterior tubercles of the transverse processes of c3 to c6. Pharyngeal muscles computer science flashcards quizlet. 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. The lateral condyle is the lateral portion of the upper extremity of tibia. Superior attachments delineate limits of pharyngeal wall.
The area in front of the tubercle forms the roof of the nasopharynx and supports the pharyngeal tonsil. The occipital bone is a cranial dermal bone and the main bone of the occiput. Rectus capitis laterallis arises from jugular process lateral to the occipital condyles while the rectus capitis anterior arises from the basilar. 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. 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.
The pharyngeal tubercle gives connection to the upper terminal of fibrous raphe of the pharynx, where the constrictor muscles of pharynx are attached. It is the highest located muscle of the three pharyngeal constrictors. The tube begins at the base of the skull and ends inferior to the cricoid cartilage c6. This muscular band attaches onto the region of the occiput anterior to the foramen magnum and posterior to the pharyngeal tubercle. Lateral to the tubercle on either side is the attachment of longus capitis muscle. Going from superficial to deep, the scalp layers are skin, dense connective. Pharyngeal tubercle wikimili, the free encyclopedia. The posterior wall of the pharynx was dissected in 236 adult human cadavers of the mongoloid, caucasoid, and negroid races. The pharyngeal tubercle gives attachment to the upper end of fibrous raphe of the pharynx, where the constrictor muscles of pharynx are inserted.
The longus capitis is inserted into the bone lateral to the pharyngeal tubercle, and the rectus. The tendinous origins unite to form a muscular band that courses superiorly to insert onto the occiput anterior to the foramen magnum figure 232. The levator veli palatini muscle, which elevates the soft palate, is innervated by a pharyngeal branch of the vagus nerve. It is trapezoidal in shape and curved on itself like a shallow dish. 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. A terminal segment includes a tubercle that projects dorsally and an anus. It is located on the lower surface of the basilar part of occipital bone, about 1 cm.
It runs up the length of the cervical spine, adjacent to the vertebral bodies. 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. Pharyngeal tubercle of basilar part of occipital bone. The longus capitis muscle functions to flex the head. Pharyngobasilar fascia an overview sciencedirect topics.
It is common to both the alimentary and the respiratory tract. The tendinous origins unite to form a distinct muscular band that courses superiorly toward the occiput. Anatomy, head and neck, pharynx statpearls ncbi bookshelf. Longus capitis is a long flat muscle of the anterior neck. Even more anterior to the foramen magnum is the pharyngeal tubercle, the attachment site of the fibrous raphe of the pharynx. 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. Anatomy, head and neck, pharyngeal muscles statpearls ncbi. Hand atlas of human anatomy werner spalteholz download. Well defined superiorly, giving way to musculature inferiorly. The pharynx is a conductive structure located in the midline of the neck. 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 attachment of this fascia to the base of the skull fig.
The longus capitis muscle is located anterior and slightly lateral to the longus colli muscle. Learn how to say pharyngeal with emmasaying free pronunciation tutorials. The muscle is a quadrilateral muscle, thinner and paler than the inferior pharyngeal constrictor muscle and middle pharyngeal constrictor muscle. The material presented in these tables is contained in the book. Bilaterally over the basilar portion of the occipital bone. 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. It is pierced by the foramen magnum, permitting communication from the. Pharyngeal tubercle definition of pharyngeal tubercle by. For the superior pharyngeal constrictor muscle, it acts as the point of connection. The scalp, which consists of five layers, covers the bone. Mcqs for netters head and neck anatomy for dentistry.
Attachment of the pharyngobasilar fascia to the cranial base posterior to anterior. Components orbicularis oris buccinator pterygomandibular raphae superior constrictor of pharynx opposing the buccinator mechanism there is a very powerful muscle tongue. On the lower surface of the basilar part of occipital bone, about 1 cm. Other readers will always be interested in your opinion of the books youve read. The blood supply of the scaphoid comes from the radial artery, feeding the bone on the dorsal surface near the tubercle and scaphoid waist. Longus capitis muscle an overview sciencedirect topics. Superior attachment there is an irregular cshaped line of pharyngeal wall attachment on the base of the skull. Skin and muscle of the upper lip labii superioris elevates the upper lip. 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 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. The pharynx is a muscular tube that connects the nasal cavities to the larynx and oesophagus. The pharyngeal muscles receive innervation from the vagus and. Genioglossus muscle is a major pharyngeal dilator that plays an important role in osa pathophysiology. Pharyngeal tubercle structure detail anatomyexpert.
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. Laterally, it covers the pharynx, superiorly inserting into the skull base through the pharyngeal tubercle, with the superior constrictor muscle. Anatomy, head and neck, occipital bone, artery, vein, and. The pharyngeal tubercle gives attachment to the fibrous raphe of the pharynx. Professional health systems prohealthsys anatomy textbooks.
Book now aarogyam c and other lab tests with a special discount of up to 70%. The tubercle in front of the foramen magnum gives attachment to the superior constrictor muscle pharyngeal tuber. This book is distributed under the terms of the creative commons. It is the main structure, in addition to the oral cavity, shared by two organ systems, i.
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