Which muscle originates from the palatal aponeurosis?

Which muscle originates from the palatal aponeurosis?

palatopharyngeus muscle The palatopharyngeus muscle originates from the palatine aponeurosis and the lateral border of the palatinus muscle. It travels caudally along the lateral wall of the nasopharynx to the pharyngeal raphe, forming part of the superior constrictor muscle group.

How palatine aponeurosis is formed?

A The palatine aponeurosis is formed by the expanded tendons of levator palati muscles. B Tensor palati turns through 90 degrees around the pterygoid hamulus. C Contains mucous glands, lymphoid tissue and taste buds. D Is lined by squamous epithelium on its superior surface.

What does aponeurosis mean in anatomy?

aponeurosis, a flat sheet or ribbon of tendonlike material that anchors a muscle or connects it with the part that the muscle moves. The aponeurosis is composed of dense fibrous connective tissue containing fibroblasts (collagen-secreting spindle-shaped cells) and bundles of collagenous fibres in ordered arrays.

Where do you get aponeurosis?

Aponeuroses are important for human movement and posture and are found all over your body, from the tip of your head to the soles of your feet. What, exactly, is an aponeurosis? An aponeurosis is a type of connective tissue that provides a point for a muscle to attach to a bone or cartilage.

Is the palatine aponeurosis the soft palate?

Anatomical Parts Attached to the posterior border of the hard palate is a thin, firm fibrous lamella called the palatine aponeurosis, which supports the muscles and gives strength to the soft palate. It is thicker above than below, where it becomes very thin and difficult to define.

What is the anterior part of the palate made of?

Palate, in vertebrate anatomy, the roof of the mouth, separating the oral and nasal cavities. It consists of an anterior hard palate of bone and, in mammals, a posterior soft palate that has no skeletal support and terminates in a fleshy, elongated projection called the uvula.

What is pharyngeal isthmus?

isthmus of pharynx passage posterior to the soft palate by which the nasopharynx and oropharynx communicate (i.e., the junction of nasopharynx and oropharynx), closed during swallowing by elevation of the soft palate and contraction of the posterior fascicle of palatopharyngeus (muscle), forming a Passavant cushion.

Where are the palatine bones?

The Adult Palatine. The palatine bones contribute to the posterior part of the roof of the mouth and floor and lateral walls of the nose, the medial wall of the maxillary sinuses and the orbital floors. Each bone (Fig. 5-66) consists of horizontal and perpendicular plates (laminae) set at right angles to each other.

What is Passavants Ridge?

The Passavant cushion or ridge is a small prominence in the posterior pharynx, formed from a focal bulge of the superior pharyngeal constrictor muscles during swallowing.

What does the aponeurosis do?

1. A: aponeuroses are extensions of external tendons on the surface of pennate muscles that function as insertion sites for muscle fascicles and may play a role in modulating fascicle rotation and dynamic gearing during muscle contractions.

What is Bicipital Aponeurosis?

Bicipital aponeurosis or lacertus fibrosus is an aponeurosis from the tendon of biceps brachii muscle in the cubital fossa. … The bicipital aponeurosis is presumed to protect the neurovascular bundle in the cubital fossa such as median nerve and the brachial artery, which pass deep to it [1].

Is an aponeurosis a tendon?

Aponeuroses and tendons are connective tissues that connect muscles to bones. Aponeurosis is an extremely delicate, thin sheath-like structure, which attaches muscles to the bones whereas tendons are tough, rounded cord-like structures which are extensions of the muscle.

Why is aponeurosis different from tendon?

The key difference between tendon and aponeurosis is that tendon allows the body to move and be flexible while aponeurosis allows the body to be strong and stable. … Moreover, aponeurosis is a delicate connective tissue while the tendon is a tough connective tissue.

What muscle uses aponeurosis?

It has for its borders the external oblique, pectoralis muscles, and the latissimus dorsi.

What is difference between tendon and aponeurosis?

The aponeurosis is a different structure attached to the bones and the muscles, while the Tendon itself happens to be the extension of the muscles. Aponeurosis has a flat shape, while Tendon has a structure of a rope. The aponeurosis is a delicate muscle connector, while Tendon is relatively rough.

What muscle elevates the pharynx?

Palatopharyngeus muscle Palatopharyngeus muscle It elevates the pharynx in order to close off the nasopharynx during swallowing.

What is the hard palate?

The hard palate is a thin horizontal bony plate made up of two bones of the facial skeleton, located in the roof of the mouth. The bones are the palatine process of the maxilla and the horizontal plate of palatine bone.

What muscles elevate the soft palate?

Levator veli palatini muscle: elevates the soft palate and is involved in swallowing.

What Innervates anterior hard palate?

The greater palatine nerve innervates most of the glandular structures of the hard palate. The nasopalatine nerve innervates the mucous membrane of the anterior hard palate and the lesser palatine nerves innervate the soft palate.

Is the alveolar ridge part of the hard palate?

The alveolar ridge is a small protuberance just behind the upper front teeth that can easily be felt with the tongue. The major part of the roof of the mouth is formed by the hard palate in the front, and the soft palate or velum at

Which is more anterior the hard or the soft palate?

The hard palate is the anterior bony portion, while the soft palate is the posterior muscular part. … The palate completely separates the oral cavity and nasal cavities.

What are the Faucial pillars?

The right and left palatoglossus muscles create ridges in the lateral pharyngeal wall, referred to as the palatoglossal arches (anterior faucial pillars). These pillars separate the oral cavity and the oropharynx the muscle functions as an antagonist to the levator veli palatini muscle.

What are pharyngeal pillars?

The anterior pillar is the palatoglossal arch formed of the palatoglossus muscle. The posterior pillar is the palatopharyngeal arch formed of the palatopharyngeus muscle. Between these two arches on the lateral walls of the oropharynx is the tonsillar fossa which is the location of the palatine tonsil.

What is fossa of Rosenmuller?

The fossa of Rosenmller is a bilateral projection of the nasopharynx just below the skull base. It is also called the lateral pharyngeal recess or simply the pharyngeal recess. The fossa is covered by nasopharyngeal mucosa and is the most common site of origin of nasopharyngeal carcinoma (NPC).

What is palatal bone?

In anatomy, the palatine bones (/pltan/) are two irregular bones of the facial skeleton in many animal species, located above the uvula in the throat. Together with the maxillae, they comprise the hard palate.

What is Palatine process?

Medical Definition of palatine process : a process of the maxilla that projects medially, articulates posteriorly with the palatine bone, and forms with the corresponding process on the other side the anterior three-fourths of the hard palate. called also palatal process.

How many bones are in the palate?

Gross Anatomy The hard palate is made up of four cranial bones: the paired maxillae and the paired palatine bones.

What is Killian’s dehiscence?

The Killian dehiscence is a triangular-shaped area of weakness in the muscular wall of the pharynx, between the transverse and oblique bundles of the inferior pharyngeal constrictor ¹. It is the most common site of pharyngeal diverticula ⁵.

What muscle contracts produce Passavants Ridge?

Closure of the nasopharyngeal isthmus The lateral and posterior walls around the nasopharyngeal isthmus are then made taut by contraction of the palatopharyngeal sphincter muscle fibers. The latter action forms Passavant’s ridge.

What does the pharyngeal plexus innervate?

The pharyngeal plexus provides sensory innervation of the oropharynx and laryngopharynx from CN IX and CN X. (The nasopharynx above the pharyngotympanic tube and the torus tubarius is innervated by CN V₂).