Development of Palate & Tongue

Slides:



Advertisements
Similar presentations
BIOLOGY OF THE HUMAN DENTITION
Advertisements

Oral Cavity.
I seek protection of ALLAH against the rejected Shaitan
Lecture 4 Skull.
DEVELOPMENTAL INFLUENCES ACROSS THE LIFESPAN. Developmental Influences Across the Lifespan  No human activity has greater biological and social significance.
PHARYNGEAL APPARATUS.
Development of the Face, Nose & Palate
Cranial bones Cranial bones support and serve as attachment sites for the teeth, the masticatory muscles and many oro- pharyngeal structures. Cranial bones.
والصلاة والسلام علي نبينا محمد وعلي الة وصحبة اجمعين
DEVELOPMENT OF TONGUE THYROID GLAND, FACE AND PALATE
Development of Face, Nose and Palate
Copyright © 2004 by Delmar Learning, a division of Thomson Learning, Inc. ALL RIGHTS RESERVED. 1 Chapter 5 Embryology.
Development of Face, Nose & Palate
Lecture Skull.
Head & Neck Unit – Lecture 13 د. حيدر جليل الأعسم
Development of the Face, Palate & Nasal Cavity
Nerves of the Face and Neck
Nose, Nasal cavity, Paranasal Sinuses & Pharynx
FACIAL BLOCKS N NDEBELE 28 JAN 2009.
DEVELOPMENT OF FACE , NOSE AND PALATE
Skull Usually consists of 22 bones, all of which (except the lower jaw) are firmly interlocked along lines called “sutures”. Cranium = 8 bones Facial skeleton.
CRANIAL NERVES III, V, VII, IX, X. Parasympathetic Cranial Nerves Oculomotor (III) Oculomotor (III) Facial (VII) Facial (VII) Glossopharyngeal (IX) Glossopharyngeal.
SUBMANDIBULAR REGION I
Chapter 23 Development of the face, neck and limbs
The palate The palate forms the roof of the mouth. It is divided into two parts: Anterior 2/3 (the hard palate) and posterior 1/3 (the soft palate).
Salivary glands.
INFRATEMPORAL REGION.
Development of face & oral cavity
Special Embryology ___ Development of organs and organ systems
Submandibular Region It lies under cover of the body of the mandible between the mandible and the hyoid bone. It contains muscles; salivary glands; nerves;
THE PHARYNGEAL APPARATUS
Facial Bones Ahmed K Momani Radiology 2010 J.U.S.T.
ORAL CAVITY.
The Mouth The mouth cavity is divided into vestibule & mouth cavity proper. Vestibule of mouth lies between lips + cheeks (buccinator) externally, /and.
The bridge of the nose Superiorly each bone articulates with the frontal bone.
SUBMANDIBULAR REGION I By Prof. Saeed Makarem 1 Prof. makarem.
DEVELOPMENT OF FACE, NOSE AND PALATE. Development of Face  Face is developed from 5 processes (prominences):  One fronto-nasal process, 2 maxillary.
Development of the lips and palate. 13 Apr 2009 Dr. Frank C. T. Voon VVIIIXX V1 V2 V3.
FACE  It is the anterior aspect of the head that extends from the forehead to the chin and from one ear to the other.
CLINICAL ANATOMY OF ORAL CAVITY
Pharyngeal arches DR N SATYANARAYANA,FOM,DEPARTMENT OF ANATOMY.AIMST UNIVERSITY,MALAYSIA.
The Pharyngeal Apparatus
Dr. Mohamed Ahmad Taha Mousa
Infratemporal fossa Dr A.Prasanna.
Temporal Fossa.
TONGUE. Tongue derived from 1 st -4 th branchial arches manipulates food for chewing and swallowing contains no bony supports for the muscles –the extrinsic.
1 DEVELOPMENT OF THE HEAD AND NECK G.LUFUKUJA. Head and neck  The mesenchyme for formation of the head region is derived from paraxial and lateral plate.
ORAL HISTOLOGY AND EMBYOLOGY lecture - 8. DEVELOPMENT OF THE FACE.
د . سيف (م 9) Human Anatomy.
Development of Face, Palate and Skull
SUBMANDIBULAR REGION I
The Tongue.
Anatomy of the mouth.
Oral Cavity Dr. Shawky M. Tayel By
Dental Anatomy Skull + Muscles of Mastication/Facial Expression + Tongue © April 2015 Rachel Krystina Marfell.
Development of the face and palate
Gi tract embryology 1.
Human Anatomy تشريح / د . سيف (م 8 - 9) ثاني اسنان موصل 20/ 12 / 2015
Facial Skeleton Maxillae (2) Form the upper jaw
Development of the face and palate
A. Introduction 1. A human skull usually consists of 22 bones. 2. The moveable bone in the skull is the mandible. 3. Some cranial and skull bones together.
Essentials in Head and Neck Embryology
Essentials in Head and Neck Embryology Part 3
Trigeminal Nerve (V).
Tongue.
Essentials in Head and Neck Embryology
SALIVARY GLANDS Dr. Jameela El-Medany.
ORAL CAVITY, And Salivary glands
Presentation transcript:

Development of Palate & Tongue Dr. Saleem Shaikh

Introduction The formation of palate and tongue is a complex and interrelated process. The formation of lip takes place by the fusion of maxillary process with the frontonasal process The maxillary process also extends backwards on either side of the stomatodeum From each maxillary process a plate like shelf extends mesially. This is called as palatal process. At this stage, there are three components which make up the palate - Frontonasal process – primitive palate (premaxilla) The two palatal shelves

The two palatal shelves initially grow downwards (vertically) and after sometime, these two processes swing upwards to become horizontal. The process first fuses with the frontonasal process, then the two processes fuse with each other to form the roof of the oral cavity and separate the nasal cavity from the oral cavity. The fusion starts anteriorly and progresses posteriorly. The medial edges of the palate also fuse with the free lower edge of the nasal septum, this separates the nasal cavity into two parts.

Once the fusion of the palatal shelves is complete, the anterior part undergoes ossification to form the hard palate. The part of the palate which is derived from the frontonasal process forms the premaxilla, which carries the incisors. Defective fusion of the various components of the palate gives rise to various forms of cleft palate

Development of Tongue

Development of Tongue The tongue is one of the most important organ in the oral cavity. The tongue develops in relation to the pharyngeal arches in the floor of the mouth. The pharyngeal arches arises as a mesodermal thikenings in the lateral wall of the foregut and it grows to meet the corresponding arch on the other side. The medial most part of the mandibular arch proliferate to form two lingual swellings, on either side of the midline A median swelling also appears between the two lingual swellings – this is known as “ Tuberculum Impar”

Another midline swellings are seen in relation to the midline of the second third and fourth arches. This swelling is known as the “ Hypobranchial eminence” This eminence divides into two parts – Cranial - second and third Caudal – fourth

The anterior two third of the tongue is formed by fusion of the Two lingual swellings and tuberculum impar. The tuberculum impar regresses as the development proceeds and most part of the developed anterior tongue is made up of the two lingual swellings The posterior one third of the tongue is derived from the cranial part of the hypobranchial eminence. (the third arch mesoderm grows over the second arch ) The posterior most part of the tongue is formed by the caudal part of the hypobranchial eminence.

Nerve supply of the anterior two third of the tongue – Lingual branch of the mandibular nerve – sensory Chorda tympany branch of facial nerve – taste Posterior one third of the tongue is supplied by the glossopharyngeal nerve Posterior most part of the tongue is supplied by Superior laryngeal nerve. The muscles of the tongue are supplied by the hypoglossal nerve.