Extrinsic Muscle of Tongue

The structure is a depression bounded. This eBook contains high-quality illustrations and validated information about each muscle.

Tongue Muscles Anatomy Tongue Muscles Muscle Anatomy Human Muscular System

The supra- and infrahyoid muscle groups attach to the hyoid boneThis in turn is bound to the larynx by strong ligaments.

. Allowing the whole of the larynx. Passing inferiorly and anteriorly between the internal and external carotid arteries it divides upon the side of the tongue near its dorsal surface blending with the fibers of the longitudinalis. For example the tongue itself is a composite muscle made up of various components like longitudinal transverse horizontal muscles with different parts innervated having different nerve supply.

The tongue is a mass of muscle that can be divided into different parts based on its landmarks. Intrinsic and extrinsic muscles. The tongue must work properly in cooperation with the lips teeth.

Intrinsic muscles have their origin in the part of the. The motor component refers to the muscles of the tongue whereas the sensory component is associated with the structures called lingual papillae which contain taste receptors. The styloglossus the shortest and smallest of the three styloid muscles arises from the anterior and lateral surfaces of the styloid process near its apex and from the stylomandibular ligament.

Other functions are air humidification and aiding in voice resonance. The paranasal sinuses usually consist of four paired air-filled spaces. Inserts into the body of the hyoid bone and the entire length of the tongue.

Muscle naming The seven general types of skeletal muscle. Superficial Extrinsic muscles of back. The tongue is made up of 8 different muscles classified as intrinsic and extrinsic.

The strength and mobility of the tongue are supported by its paired muscles which are grouped as either intrinsic or extrinsic. The zygomaticus minor muscle is a muscle of facial expression. Inferiorly by the level of the inferior border of the cricoid cartilage.

The tongue is a muscular mass and although it is made up of several muscles all act in conjunction with each other to perform various movements. Anterior and lateral neck muscles. Gross anatomy Relations andor boundaries.

Arises from the mandibular symphsis. Tongue can depress or act in con-cert with other extrinsic muscles to retract tongue Hypoglossal Styloglossus 25 styloid process of temporal bone lateral inferior aspect of tongue retracts elevates tongue Hypoglossal Hyoglossus 26 body greater horn of hyoid bone inferolateral tongue depresses tongue draws its sides downward. Muscles of tongue.

The extrinsic muscles act to move the larynx superiorly and inferiorly. Deep Intrinsic muscles of back. They have several functions of which reducing the weight of the head is the most important.

Laterally by the thyroid cartilage and thyrohyoid membrane. Poor muscle tone in the tongue or other disorders related to the tongue and mouth muscles can have significant effects on ones ability to speak and communicate clearly and effectively. The tongue muscles can be divided into the intrinsic and extrinsic groups.

It is innervated by the facial nerve VII. Superiorly by the level of the hyoid bone. These various muscles are grouped as intrinsic muscles those entirely within the tongue that affect shape and extrinsic muscles those that originate outside.

Broadly the intrinsic muscles can alter the shape of the tongue while the extrinsic muscles change the position of the tongue. This differentiation is helpful to connect its structure to specific unique functions. They are comprised of the suprahyoid and infrahyoid groups and the stylopharyngeus a muscle of the pharynx.

Medially by the aryepiglottic fold and arytenoid and cricoid cartilages. Inferior fibres protrude the tongue middle fibres depress the tongue and superior fibres draw the tip back and down. It originates from the zygomatic bone lateral to the rest of the levator labii superioris muscle and inserts into the outer part of the upper lipIt draws the upper lip backward upward and outward and is used in smiling.

The extrinsic muscles are as follows. This muscle chart eBook covers the following regions.

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