Head And Neck 2 Flashcards
What attaches to the coronoid process of mandible
Temporalis muscle
What forms the root of the orbit
Frontal bone and sphenoid bone
What forms the roof of the orbit
Orbital surface of the frontal bone and lesser wing of the sphenoid bone
What forms the posterolateral wall of the orbit
Sphenoid bone
What forms the floor wall of the orbit
Maxilla
What form is the medial wall of the orbit
Lacrimal, ethmoid and palatine bone
What forms the lateral wall of the orbit
Zygomatic bone
What divides nasal cavity into right and left
Nasal septum
What makes up the nasal septum
Perpendicular plate of ethmoid bone, vomer septal cartilage.
What passes through the optical canal/foramen
Optic nerve (CN II)
Ophthalmic artery
Why passes through the nasolacrimal canal (aka tear duct)
tears from the lacrimal sac of the eye into the nasal cavity
What are the four paranasal sinuses
Frontal
Ethmoidal labyrinth
Sphenoidal
Maxillary
What are the function of these paranasal sinuses
Reduces the weight of the skull
Resonating chambers
Functions of the nasal concha
increase the surface area of these nasal cavities, thus providing for rapid warming and moistening of air in the nasal cavity and humidification of air as it passes to the lungs
What attaches to the crista galli of the ethmoidal bone
Dura mater
What is lateral to the crista galli and what lies within it
Olfactory fossa
Olfactory bulb
What passes through the olfactory or foramina of cribiform plate
Olfactory nerves CN I
Why houses the pituitary gland
Hypophyseal fossa of sella turcica of sphenoid bone
What passes through the foramen lacerum
Greater Petrosal nerve
What passes through the carotid canals
Internal carotid artery
Internal carotid nerve plexus
The opening where the brain attaches to the spinal cord is called
Foramen magnum
How many home of the skull do we have?
How many auditory ossicles do we have (for hearing)
22
6
Occipital condyle is site for
Articulation between skull and vertebrae column
Styloid process is site for
For attachment of muscle that move the tongue
Mandibular fossa is site for
For articulation wit mandibular condyle
Medial and lateral pterygoid plate are
Part of the sphenoid bone that surrounds the posterior opening Of the nasal cavities
Vomer is what part of the nasal septum
Posterior part
Hard palate forms what part of nasal cavity
Floor
Hard palate and soft palate does what
Separates the nasal cavity from the oral cavity
Neaurocranium and viscerocranium are also called
Braincase and fascial bone
How many vertebrae do we have in an silt and in an embryo
26
34
Curvature of vertebral in adults
Cervical - anterior curvature (convex)
Thoracic - posterior curvature (concave)
Lumbar - anterior curvature (convex)
Sacral and coccygeal - posterior curvature (concave)
What is the shape of the vertebral column at birth?
What happens when the head is raised?
What happens when sitting and walking begins
C-shaped
Cervical curvature develops
Lumbar curvature develops
Abnormal lumbar curvature, meaning of the following:
Lordosis
Kyphosis
Scoliosis
Exaggeration of lumbar curvature
Exaggeration of thoracic curvature
Lateral curvature of the spine to the left or right (often accompanied by kyphosis)
What forms the lateral and posterior walls of vertebral foramen
Vertebral arch
What forms the anterior wall of the vertebrae foramen
vertebral Jody
What forms the lateral wall of vertebral foramen
Pedicle
What forms the posterior wall of the vertebral foramen
Lamina
What passes through the intervertebral foramen
Spinal nerves
What is spina bid Isa and what vertebrae region does it affect the most
Failure of the laminae to form or fuse together during development.
Lumbar region.
Functions of the intervertebral disc
Provides support to the verte
Prevents vertebrae from rubbing against each other
Intervertebral disc consists of what
Annulus fibrosus (external)
Nucleus pulposus (internal and gelatinous)
What is herniated or ruptured intervertebral disc
This is when part of the annulus fibrosus has been removed and the nucleus pulposus become exposed. This can push against the spinal nerve, impairing functioning and cause pain
Refer to slide
What passes the transverse foramen of the cervical vertebrae
vertebral artery and vein in the first six vertebrae and only the vertebral vein in the seventh
Differences between cervical, thoracic and lumbar vertebrae
Check slide
Functions of the vertebral column
Check slide
What allows for the YES movement of the head
Atlas
What allows for the NO movement of the head
Axis
How do the articulation facets of the cervical vertebrae face?
Superior articular facet faces superiorly
Inferior articular facet faces inferiorly
What is the vertebral prominence
C7 spinous process
Bifold spinous process of cervical vertebrae is from what to what
C2 to C6
Characteristics that f cervical vertebrae
Check slide
Functions of vertebral column
Check slide
The superior articular facet of atlas articulates with
Occipital condyles
What forms the floor of the olfactory fossae
Cribiform plate of ethmoid bone
What lies within the olfactory fossa
Olfactory bulbt
Function of the external acoustic meatus
Carries sound to the ear
What bone contains the middle and inner ear of mastoid air cells
Temporal bone
What forms the forehead, roof of the orbit and contains the frontal sinus
Frontal bone
What forms the floor of middle cranial fossa
Greater wing of sphenoid bone
What forms the superior border of the superior orbital fissure
Lesser wing of sphenoid bone
What attaches to the external occipital protuberance
Nuchal ligament
The labyrinth of the ethmoidal sinus is divided into
Anterior, posterior and middle ethmoidal cells
What forms the anterior 2/3 of the hard plate
Palatine process of the maxilla
What forms the posterior 1/3 of the hard plate
Horizontal plate of palatine bone
What forms the lateral nasal wall
Vertical plate of the palatine bone
What is the special feature of the hyoid bone
It’s the only bone that does not articulate with another bone.
It attaches to the skull via muscles and ligaments
What is a special feature of the mandible
The only bone that is freely moveable relative to the rest of the skull bone