What attaches to the pharyngeal tubercle?

What attaches to the pharyngeal tubercle?

On the lower surface of the basilar part of occipital bone, about 1 cm. in front of the foramen magnum, is the pharyngeal tubercle which gives attachment to the fibrous raphC) of the pharynx, also known as the pharyngeal raphe. This is the point of attachment for the superior pharyngeal constrictor muscle.

What is pharyngeal raphe?

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.

What are the 4 parts of the occipital bone?

either side of middle line: longus capitis, and rectus capitis anterior. anterior atlanto-occipital membrane….The occipital bone is composed of four parts:

  • squamous part: external/internal surfaces.
  • basilar part (basiocciput): lower/upper surfaces.
  • lateral (jugular) parts (two): under/upper surfaces.

What articulates with the occipital bone?

1 Anatomy. The occipital bone is set at the rear of the cranium and articulates with the temporals, sphenoid, parietals, and the uppermost vertebra, the atlas.

What are the pharyngeal constrictors?

The pharyngeal constrictor muscles form a funnel, and the mouth of the esophagus is like a transverse slit at the bottom of this funnel. At the esophageal inlet, the fibers of the cricopharyngeal muscle run transversely, thus forming the UES.

What are pharyngeal constrictors?

Does the occipital bone contain a sinus?

The body that forms the middle of the sphenoid bone articulates with the ethmoid and occipital bone and forms a key part of the nasal cavity; it also contains the sphenoidal sinuses.

What are the external features of occipital bone?

Outer surface Running across the outside of the occipital bone are three curved lines and one line (the medial line) that runs down to the foramen magnum. These are known as the nuchal lines which give attachment to various ligaments and muscles. They are named as the highest, superior and inferior nuchal lines.

Which of the following articulates connects with the base of the skull occipital bone?

The base of the occipital bone articulates anteriorly with the body of the sphenoid bone. Superiorly it joins the parietal bones along a complex suture line, and laterally it articulates with the temporal bones.

Where is the pharyngeal venous plexus?

The pharyngeal plexus (venous) is a network of veins beginning in the pharyngeal plexus on the outer surface of the pharynx, and, after receiving some posterior meningeal veins and the vein of the pterygoid canal, end in the internal jugular.

What Innervates the superior pharyngeal constrictor?

Superior pharyngeal constrictor receives innervation from the pharyngeal branch of vagus nerve, via the pharyngeal plexus.

What is the anatomy of the pharyngeal tubercle?

Anatomical terms of bone. The pharyngeal tubercle is a part of the occipital bone of the head and neck. It is located on the lower surface of the basilar part of occipital bone, about 1 cm. anterior to the foramen magnum.

What is the external surface of the occipital bone?

The exterior surface of the basilar part contains the pharyngeal tubercle. The lateral parts of the occipital bone make up the sides of the foramen magnum. On their undersurface lie the occipital condyles. Behind the occipital condyle is the condyloid fossa and condyloid canal, which transmits an emissary vein.

What is the external occipital protuberance?

A palpable prominence known as the external occipital protuberance lies on the midline of the external surface which serves as an attachment for the trapezius muscle. Furthermore the external surface features three curved lines referred to as nuchal lines:

What is the suture between the occipital and petro-occipital bones?

The petro-occipital suture joints the petrous part of the temporal bone with the occipital bone. The spheno-occipital suture between the sphenoid and occipital bones disappears as they fuse during adolescence. The basilar and condylar parts develop through endochondral ossification.