Views of the Skull Flashcards
(21 cards)
FRONTAL VIEW
This aspect includes every skull bone EXCEPT the _______ BONE and the ________ BONES
SUPERIORLY, we see the _______ BONE (forming the forehead), then the _______ (forming the eye socket) and _______ _______
INFERIORLY to these bones is the upper jaw, the ________, with its sixteen teeth
In the most INFERIOR part of this of this view is the _______ with its matching sixteen teeth. It is the only bone not directly attached to the _____
PROMINENT BONES of the face include the _______ BONE (the cheek bone), the _______, and the 2 small ______ BONES (meeting at the bridge of the bones).
The MAXILLA and MANDIBLE each feature an _______ ________ which contains the teeth
Other important features of the ANTERIOR VIEW are the ______ _____ NOTCH (or foramen), the _______ ________ FORAMEN, and the ______ FORAMEN (in the mandible)
These foramina allow the passage of nerves
Occipital
Palatine
Frontal
Orbit
Nasal Cavity
Maxilla
Mandible
Skull
Zygomatic
Maxilla
Nasal
Alveolar Process
Superior Orbital
Inferior Orbital
Mental
LATERAL VIEW
From the side, the large flat bones of the ______ and most of the ______ bones can be seen
From front to back one sees the small ____ BONES, the ______ and the ______, then the ______ BONE and the _______ ARCH
The ARCH is made up of the _______ ______ of the ZYGOMATIC BONE and the ZYGOMATIC PROCESS of the _______ BONE
POSTERIOR to the ZYGOMATIC BONE is the ______ _____ of the SPHENOID BONE (above the arch) and the ______ ______ PLATE of the SPHENOID BONE (below the arch)
POSTERIOR again, is the temporal bone with its _______ (flat) SECTION above and its _______ (not flat) SECTION below
The SQUAMOUS TEMPORAL BONE together with the GREATER WING of the SPHENOID BONE and the lower portion of the of the ______ BONE make up the DEPRESSION - the _______ FOSSA
The PETROUS TEMPORAL BONE features the long thin _____ PROCESS and the prominent _______ PROCESS
The _____ _____ ______ (the ear-hole) is another important feature of the TEMPORAL BONE
The FRONTAL BONE joins the PARIETAL BONE at the ______ SUTURE, and the PARIETAL BONE is united with the _______ BONE at the ______ SUTURE
The area where the parietal, frontal, sphenoid and temporal bones join is called the _____
Cranium
Facial
Nasal Maxilla Mandible Zygomatic Zygomatic
Temporal Process
Temporal
Greater Wing
Lateral Pterygoid
Squamous
Petrous
Parietal
Temporal
Styloid
Mastoid
External Acoustic Meatus
Coronal
Occipital
Lambdoid
Pterion
POSTERIOR VIEW
SUPERIORLY, the parietal bones unite at the ______ SUTURE
Posteriorly, these bones articulate with the occipital bone at the _____ SUTURE, a feature of the occipital bone is the _______ _____ LINE, which is for muscle attachment
At the lower border are found the ______ CONDYLES which articulate with the _____ at the ______-_______ JOINT
Between these condyles is the ______ _____, which the SPINAL CORD passes through
Laterally and posteriorly are the ______ processes
Sagital
Lambdoid
Superior Nuchal
Occipital
Atlas
Atlanto-Occipital
Foramen Magnum
Mastoid
SUPERIOR VIEW
The 3 main sutures of the cranium, the ____, ____ and ____ are seen uniting the frontal, parietal and occipital bones. The temporal fossa can be seen ______
Coronal
Sagittal
Lambdoid
Laterally
INFERIOR VIEW
The central feature of the base of the skull is the foramen magnum, flanked by the paired _____ condyles
Anterior to these are the ____ ____ (posterior nasal apertures), separated from each other by the vertical ____ BONE
Anteriorly again, is the _____ ____, flanked by the upper teeth
The HARD PALATE is composed of the _____ BONES posteriorly, and the PALANTINE _______ of the maxilla anteriorly
Lateral to the choanae are the _____ and _____ PTERYGOID PLATES of the sphenoid, and the ______ _____ FISSURE
In the centre lateral are several important foramina: the foramina ______, ______ and ____
Further back, lateral to the occipital condyles are the _______ FORAMEN, _______ CANAL, ____ CANAL, ______ FORAMEN, and _____ ____ MEATUS
Occipital
Nasal Chonae
Vomer
Hard Palate
Palatine
Processes
Medial
Lateral
Inferior Orbital
Lacerum
Spinosum
Ovale
Stylomastoid Hypoglossal Carotid Jugular External Acoustic
INTERIOR VIEW (SUPERIOR) The interior of the skull can be subdivided into \_\_ separate fossae
________________________
ANTERIOR CRANIAL FOSSA
The floor of this fossa is made up of the horizontal plate of the _____ bone and the _______ PLATE and ______ ______ both of the ETHMOID BONE
The horizontal plate of the frontal bone is also the ____ of the ORBIT
The posterior border of the fossa is formed by the _____ WING and ____ of the sphenoid with the ______ ______ PROCESSES projecting posteriorly from the medial end of the wings
________________________________
MIDDLE CRANIAL FOSSA
This fossa is often described as butterfly shaped with the sphenoid body as the body of the insect and the ______ WING and the temporal bone as the butterfly’s wings
The central region of the sphenoid bone is the ______ _____ featuring the paired ANTERIOR and POSTERIOR ______ _______. The Sella Turcica is the _____ of the sphenoid body
Prominent openings in this fossa, are the: _____ CANALS between the anterior clinoid processes connecting the brain case to the orbits, the _____ _____ FISSURES between the greater and lesser wings of the sphenoid and the FORAMINA _____, _____, _____ and LACERUM
The carotid canal opens into the middle fossa just ____ to the foramen lacerum
________________________________
POSTERIOR CRANIAL FOSSA
The major part of this fossa is formed by the occipital bone fesaturing the ______ ____
Anterior to the foramen magnum, the ____ runs up steeply toward the sella turcica
Laterally and also steep is the vertical wall of the petrous part of the temporal bone forming the _____ border of the fossa
In this wall is located the _____ _____ ____
Lateral to the foramen magnum is the ______ FORAMEN
In the wall of the foramen magnum is the _____ _____
The wall of the fossa is markedly grooved indicating the course of the _____ and _____ _____ SINUSES
3
______________
Frontal
Cribriform
Crista Galli
Roof
Lesser
Jugum
Anterior Clinoid
_______________
Greater
Sella Turcica
Clinoid Processes
Roof
Optic Superior Orbital Rotundum Ovale Spinosum
Lateral
_____________
Foramen Magnum
Clivus
Anterior
Internal Acoustic Meatus
Jugular
Hypoglossal Canal
Transverse
Sigmoid Venous
FRONTAL BONE
The bone contains the _____ _____ and the ________ NOTCH
Frontal Sinuses
Supraorbital
PARIETAL BONES
These 2 bones are united by the aptly named ______ suture; they form the walls and roof of the _____
They articulate with the frontal bone at the _____ suture, sphenoid bone, occipital bone at the ______ suture, and temporal bone at the ______ suture
Sagittal
Cranium
Coronal
Lambdoid
Squamous
OCCIPITAL BONE
The unpaired occipital bone forms the back and the _______ portion of the _____ of the skull
The main features are the ______ ____, the ______ CANALS and the _______ CONDYLES
Posterior
Base
Foramen Magnum
Hypoglossal
Occipital
TEMPORAL BONES
They are located at the side of the skull at the temple and contain the _______ ______ (bony section), the ________ EAR and the ______ EAR
The upper flat half of the bone is the squamous temporal bone forming the ______ _____
The lower half is the petrous temporal bone featuring the internal and external ______ _____, the zygomatic, mastoid and styoid _______ and part of the ______ foramen, foramen _______ and the _____ ____
Auditory Tube
Middle
Inner
Temporal Fossa
Acoustic Meatus Processes Jugular Lacerum Carotid Canal
SPHENOID BONE
The body contains the sphenoid ______, features the sella turcica on its _____ surface and the _____ clinoid processes
The greater wings are attached to the body and form the floor of the ___ _____ fossa, part of the temporal fossa and the ____. It contributes to the superior orbital fissure and contains the important foramina _______, _____ and _______
The lesser wings (the ears of the owl) with the centrally-located jugum form the posterior margin of the anterior cranial fossa and the _____ ____ processes. The optic canals are medial to the clinoid processes. The lesser wing also forms the upper margin of the _____ ____ fissure
The pterygoid process projects below the cranial vault (like legs). The major differences of the pterygoid process are the ______ and ______ pterygoid _____ between the PTERYGOID ____
Sinuses
Upper
Posterior
Middle Cranial Orbit Rotundum Ovale Spinosum
Anterior Clinoid
Superior Orbital
Medial
Lateral
Plates
Fossa
ETHMOID BONE
This bone has a vertical and horizontal plate and 2 LATERAL ______. The ethmoid makes up much of the _____ skeleton, the medial wall of the _____, and forms a small medial, anterior section of the anterior cranial ______, featuring the vertical _______ ______ and the horizontal _______ ______
The nasal component has the two lateral masses with their ETHMOIDAL ____ _____, the superior and middle _____ _____, and the VERTICAL PLATE forming half of the BONY NASAL SEPTUM
Masses Nasal Orbit Fossa Crista Galli Cribriform Plate
Air Cells
Nasal Conchae
INFERIOR CONCHA
These paired shell-shaped bones arise from the ______ and project horizontally to form part of the lateral wall of the nose including the ______ concha on either side
Maxillae
Lowest
MAXILLA
Is a hollow bone containing the large _______ ____
It features the upper jaw with the ________ _____ _____ and its sixteen teeth
It contributes to the medial border and the wall of the _____, the inferior border and floor of the orbit
Its horizontal ______ process is the anterior 4/5 of the hard palate
It has 2 processes: the ______ and the _____ processes. It also contains 2 foramina: the ______ and the _____ foramina
Maxillary Sinus
Superior Alveolar Process
Orbit
Palatine
Zygomatic
Frontal
Infraorbital
Incisive
MANDIBLE
The vertical arm is called the ______ and the horizontal arm is the ____
Viewed from above, the mandible could be called horseshoe shaped with the two halves meeting at the ______ _____ (the point of the jaw)
The ramus has the _____ process, which is the articular process of the mandible that articulates with the _____ fossa of the temporal bone to form the _____-____ joint
The Coronoid Process gives ______ for a large muscle. The body meets the ramus at the ____ of the mandible
The body has a thicker, lower base which supports the _____ _______. Deep at the angle is the _______ foramen through which passes the nerve to the lower teeth
Ramus
Body
Mental Protuberance
Condyloid
Mandibular
Temporo-Mandibular
Attachment
Angle
Alveolar Process
Mandibular
ZYGOMATIC BONES
These are the cheek bones. It has _____, _____ and _____ processes
The temporal process forms the zygomatic ____ with the zygomatic process of the temporal bone
This bone contributes to the wall and lateral border of the orbit and the lateral half of the inferior border and floor of the orbit
Frontal
Maxillary
Temporal
Arch
PALATINE BONE
It is also L-shaped. The horizontal plate is the posterior 1/5 of the ____ ____ and its vertical plate forms the posterior 1/3 of the ____ nasal wall
Hard Palate
Lateral
LACRIMAL BONE
This small bone is located on the medial wall of the orbit. It partially forms the opening of the ____-_____ CANAL
It also contributes to the lateral nasal wall
Naso-Lacrimal
VOMER BONE
The triangular vomer is the lower and posterior component of the bony ____ ____
Nasal Septum
NASAL BONES
These 2 small bones form the ____ of the nose
Bridge
HYOID BONE
This small bone hangs below the floor of the mouth supported by various muscles. From it, the ____ is suspended
It has a body and also has ____ and _____ CORNU (horns)
Larynx
Greater
Lesser
