INTRODUCTION
Tongue is a muscular organ
Situated in the floor of the mouth
FUNCTION
Taste
Speech
Mastication
Deglutition
EXTERNAL FEATURES
Tongue has
A Root
A tip
A body
ROOT
Is attached to the mandible and soft palate above and hyoid bone below.
These attachments prevent the swallowing of the tongue.
In between the 2 bones it is related to the geniohyoid and mylohyoid muscles.
TIP
Of the tongue forms the anterior free end which lies behind the upper incisor teeth.
BODY
Has
A curved upper surface or dorsum
An inferior or ventral surface MUSCLES OF THE TONGUE
Middle fibrous septum divides the tongue into right and left halves.
Intrinsic muscles
Superior longitudinal
Inferior longitudinal
Transverse
Vertical
Extrinsic muscles
Genioglossus
Hyoglossus
Styloglossus
Palatoglossus
INTRODUCTION
Tongue is a muscular organ
Situated in the floor of the mouth
FUNCTION
Taste
Speech
Mastication
Deglutition
EXTERNAL FEATURES
Tongue has
A Root
A tip
A body
ROOT
Is attached to the mandible and soft palate above and hyoid bone below.
These attachments prevent the swallowing of the tongue.
In between the 2 bones it is related to the geniohyoid and mylohyoid muscles.
TIP
Of the tongue forms the anterior free end which lies behind the upper incisor teeth.
BODY
Has
A curved upper surface or dorsum
An inferior or ventral surface MUSCLES OF THE TONGUE
Middle fibrous septum divides the tongue into right and left halves.
Intrinsic muscles
Superior longitudinal
Inferior longitudinal
Transverse
Vertical
Extrinsic muscles
Genioglossus
Hyoglossus
Styloglossus
Palatoglossus
The tongue is a muscular organ in the mouth of most vertebrates that manipulates food for mastication and is used in the act of swallowing. It has importance in the digestive system and is the primary organ of taste in the gustatory system.
The ear is the organ of hearing and, in mammals, balance. In mammals, the ear is usually described as having three parts the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal.
The pharynx is a hollow tube that starts behind the nose, goes down the neck, and ends at the top of the trachea and esophagus. The three parts of the pharynx are the nasopharynx, oropharynx, and hypopharynx.
Tongue is a muscular structure that has the organs of taste reception. The organs for sense of taste are the taste buds. Tongue is located inside the mouth and is an important muscle. It does not have any bones. It is reddish-pink in color. The main function of tongue is taste, help in chewing food, in swallowing food and speech.
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
The tongue is a muscular organ in the mouth of most vertebrates that manipulates food for mastication and is used in the act of swallowing. It has importance in the digestive system and is the primary organ of taste in the gustatory system.
The ear is the organ of hearing and, in mammals, balance. In mammals, the ear is usually described as having three parts the outer ear, the middle ear and the inner ear. The outer ear consists of the pinna and the ear canal.
The pharynx is a hollow tube that starts behind the nose, goes down the neck, and ends at the top of the trachea and esophagus. The three parts of the pharynx are the nasopharynx, oropharynx, and hypopharynx.
Tongue is a muscular structure that has the organs of taste reception. The organs for sense of taste are the taste buds. Tongue is located inside the mouth and is an important muscle. It does not have any bones. It is reddish-pink in color. The main function of tongue is taste, help in chewing food, in swallowing food and speech.
Development of Face /certified fixed orthodontic courses by Indian dental ac...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.
Development of tongue
Anatomy of tongue
Parts and surfaces of the tongue
Muscles of the tongue
Vascular supply of the tongue
Lymphatic drainage of the tongue
Innervation of the tongue
Examination of the tongue
Clinical considerations and diseases of the tongue
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2. Tongue
• derived from 1st-4th branchial arches
• manipulates food for chewing and swallowing
• contains no bony supports for the muscles
• the extrinsic muscles of the tongue anchor the tongue firmly
to surrounding bones and prevent the mythical possibility of
'swallowing' the tongue
• sensitive and kept moist by saliva, and is richly
supplied with nerves and blood vessels to help it
move
3. Anatomy
• made mainly of skeletal muscle
• dorsum
• oral part (anterior two-thirds
of the tongue) that lies mostly
in the mouth
• pharyngeal part (posterior
third of the tongue), which
faces backward to the
oropharynx
• separated by a V-shaped
groove, which marks the
sulcus terminalis
4. Anatomy
Normal name Anatomical name Adjective
Tongue tip Apex Apical
Tongue blade Lamina Laminal
Tongue dorsum Dorsum Dorsal
Tongue root Radix Radical
Tongue body Corpus Corporeal
5. Muscle From Nerve Function
Genio-
glossus
mandibl
e
hypoglossal
nerve
protrudes the tongue as well as depressing its center.
Hyo-
glosus
hyoid
bone
hypoglossal
nerve
depresses the tongue.
Stylo-
glossus
styloid
process
hypoglossal
nerve
elevates and retracts the tongue.
Palato-
glossus
palatine
aponeur
osis
pharyngeal
branch of
vagus nerve
depresses the soft palate, moves the palatoglossal
fold towards the midline, and elevates the back of
the tongue.
Extrinsic Muscles of the Tongue
6. Intrinsic Muscles of the Tongue
• superior longitudinal muscle: assists in retraction of, or
deviates the tip of the tongue
• originates near the epiglottis, the hyoid bone, from the median
fibrous septum
• inferior longitudinal muscle: lines the sides of the tongue, and
is joined to the styloglossus muscle
• verticalis muscle: joins the superior and inferior longitudinal
muscles
• transversus muscle: divides the tongue at the middle
7. Pappilae
• The oral part of the tongue is covered with small
bumpy projections called papillae. There are four
types of papillae:
• filiform (thread-shape)
• fungiform (mushroom-shape)
• circumvallate (ringed-circle)
• foliate (leaf-shape)
• All papillae except the filiform have taste buds
on their surface
8. Blood Supply
• primarily from the lingual artery, a branch of the external
carotid artery.
• secondary blood supply to the tongue from the tonsillar
branch of the facial artery and the ascending pharyngeal
artery
9. Nerve Supply
• Motor innervation: hypoglossal nerve
• the palatoglossal muscle is innervated by the pharyngeal
branch of vagus nerve
• Sensory Innervation
• somatic sensations: lingual nerve, a major branch of the
mandibular nerve; also carries general sensation from areas
of the oral mucosa and gingiva of the lower teeth.
• taste sensation: facial nerve via the chorda tympani; also
carries parasympathetic fibers from the facial nerve to the
submandibular ganglion
• posterior one-third of the tounge: glossopharyngeal nerve
10. Function
• assists in forming the
sounds of speech
• it is the primary organ
of taste
• much of the surface of
the tongue is covered in
taste buds
