Transcript Skull & cranial cavity

Skull & cranial cavity
► Skeleton
of brain can be divided into
8 cranial bones
un paired
frontal
paired parietal&temporal
occipital
Ethmoid
sphenoid
14 facial bones
Facial bones
Paired
► Lacrimal
► Nasal
► Palatine
► Inferior turbinate
► Maxillary
► zygomatic
Un paired
► Vomer
► mandible
Calvaria & cranium
► Frontal
bone
► Parietal bone
► Temporal bone
► Occipital bone
► Sphenoid bone
► ethmoid bone
Sutures of the skull
► Coronal
► Sagittal
► Squamous
► lambdoid
Junctions of the cranial sutures
► Lambda
► Bregma
► Pterion
► Asterion
► Nasion
► inion
Foramina in the skull
anterior cranial fossa
 cribriform plate
 Foramen cecum
 Anterior and posterior ethmoidal foramina
middle cranial fossa
 Optic canal
 Superior orbital fissure
 Foramen rotendum
► Foramin
ovale
► Foramin spinosum
► Foramin lacerum
► Carotid canal
► Hiatus of facial canal
posterior cranial fossa
 Internal auditory meatus
 Jugular foramin
 Hypoglossal canal
 Foramen magnum
 Condyloid foramin
 Mastoid foramin
Foramina in front of skull
► Zygomaticofacial
foramen
► Supraorbital notch
► Infra orbital foramin
► Mental foramin
Foramina in the base of skull
► Petrotympanic
fissure
► Stylomastoid foramin
► Incisive canal
► Greater palatine foramin
► Lesser palatine foramin
► Palatine canal
► Pterygoid canal
► Sphenopalatine foramin
Structures in the cranial fossa
► Foramen
cecum
► Crista galli
► Cribriform plate
► Anterior clinoid process
► middle clinoid process
► posterior clinoid process
► lesser wing of sphenoid bone
► greater wing of sphenoid bone
► Sella
turcica
► Jugum sphenoidale
► clivus
Bony orbit
Walls ,margins
Fissure, canal & foramina
► Superior & inferior orbital fissure
► optic canal
► Supra orbital & infra orbital foramen
► Anterior &posterior ethmoidal foramina
► Nasolacrimal canal
Lacrimal apparatus
► Lacrimal
glands
► Lacrimal canaliculi
► Lacrimal sac
► Tears
CROCODILE TEARS SYNDROME
Nasal cavity
D.N.S
RUNNY NOSE
NASAL POLYP
PARANASAL SINUSES
ETHMOIDAL SINUS
FRONTAL SINUS
MAXILLARY SINUS
SPHENOIDAL SINUS
EAR
Ext ear
Aurical
Auditory meatus
Tympanic membrane
Middle ear
Tympanic cavity
Oval window round window,
Stapidius,tensor tympani muscle
Auditory ossicles,malleus,incus,stapes
Eustachian tube
Otitis media,otosclerosis,conductive deafness
Inner ear
Bony labyrinth,membranous labyrinth
STRUCTURE OF THE NECK
Post triangle
Ant triangle
Hyoid bone
Styloid process
Muscles of the neck
Platysma,sternocleidomastoid
,supra hyoid muscles
Infra hyoid muscle
DEEP STRUCTURE OF NECK
Trachea
Esophagus
Thyroid gland
Parathyroid gland
Thyroid cartilage
Vagus nerve
Sympathetic trunk
Thoracic duct
FACE
Muscles of facial expression
Occipitofrontalis
Corrugator supercilli
Orbicularis oculli
Procerus
Nasalis
Depressor septi
Orbicularis oris
Levato anguli oris
Levator labi superioris,alequa nasi
Zygomaticus major, minor
Depressor labii inferioris
Depressor anguli oris
Risorius
Buccinator
Mentalis
Auricularis, ant, sup, &post
SCALP
Layers
Skin,close subcutaneous tissues
Aponeurosis epicranalis
Loose connective tissue
Pericranium
Temporal &infra
temporal fossa
MASTICATION
Muscles of mastication
Temporalis
Masseter
Lateral pterygoid
Medial pterygoid
PAROTID GLAND
Parotitis mumps