skeletal bone chapter 3
occipital condyles
curved and smooth projections the occ. condyles have a movable articulation with the atlas the first cervical vertebra of the vertebral colum
hypoglossal canal
for the 12th cranial or hypoglossal nerve.
internal acoustic meatus
for the 7th cranial or facial nerve and the eight cranial or vestibuloconchelear nerve.
foramen rotundum
for the maxillary nerve of the 5th cranial or trigeminal nerve.
what is the largest opening on the inferior view
foramen magnum,of the occipital bone trhough which the spinal cord vertebral arteries and 11th cranial nerve pass.
what is the large anterior OVAL opening on the sphenoid bone
foramen ovale (for the mandibular nerve)`
what is the smaller and more posterior opening of the sphenoid bone?
foramen spinosum
what is a thin curved procces of the pterygoid process
hamulus
foramen lacerum
is filled cartligage.
what is in the lacrimal fossa, and where is it located...
is located just inside the lateral part of the supraorbital ridge.
where is the supraorbital nothc
is located on the medial part of the supraorbital ridge and is where the supraorbital artery and nerve travel formt he orbit to the head.
where is the jugular foramen located?
just medial to the styloid process.
where is the zygomatic process of the fromtal bone located
lateral to the orbit.( in front of the temporal bones)
what is immediately posterior to the styloid process
styloidmastoid foramen
what suture separates the zygomatic arch and the tmj?
temporozygomatic suture.
which 3 cranial nerves pass the internal jugular vein?
the 9th cranial or glossopharyngeal nerve, the 10th cranial or vagus nerve, and the 11th cranial or accesory nerve.
zygomatic arch and tmj from lateral view
the ckeekbone is visible formed by the union of the broad temporal process of the zygomatic bone and the slender zygomatic process of the temporal bone.
what cranial bones can be seen from the lateral view?
the occipital the frontal. parietal. temporal, sphenoid bone and ethmoid bone.
each temporal bones bone is composed of what 4 parts?
the squamous, tympanic, petrous,and mastoid process..
what is a pointed bony projection?
the styloid process
skull fossa from the lateral view
the temporal fossa contains the body of the temporalis muscle. inferior to the temporal fossa is the infratemporal fossa, and deep into that fossa there is the pterygopalatine fossa.
what bones can be seen from the SUPERIOR VIEW
thefrontal,ethmoid,sphenoid,temporal,occipital,and patietal bones.
perforated cribriform plate
with foramina for the first cranial or oldfactory nerve
what bones does the temporal bone articulates with?
zygomatic and one parietal bone the occipital and sphenoid bones and the mandible.
Mandible
Jaw bone
Coronal Suture
Joint separation between the Frontal Bone & Parietal Bones
Squamosal Suture
Joint separation between the Parietal Bone and Temporal Bone of the skull
Lambdoidal Suture
Joint separation between the Parietal Bones and Occipital Bone of the skull
Sagittal Suture
Joint separation between the Parietal Bones of the skull
Foramen Magnum (Magnum Foramen)
Large opening at the base of the skull on the Occipital Bone, through which the spinal cord exits
Mastoid Process
Large triangular-shaped projection that acomes off of the base of the Temporal Bone; posterior to the Styloid Process
Crista Galli
Marking on the Ethmoid Bone
Sella Turcia
Marking on the Sphenoid Bone; it holds the pituitary gland of the brain
External Occipital Protuberance
Marking on the back of the skull on the Occipital Bone
Alveolar Margin (Process)
Marking that borders the teeth and the maxilla and/or mandible
Supraorbital Foramen
Markings on the Frontal Bone, above the eye
Occipital Condyles
Markings on the base of the Occipital Bone where the skull sits on the 1st vertebrae (atlas) of the neck
Ramus
Right angle portion of the mandible
Mandibular Condyle (Condylar Process)
Rounded projection at the top of the mandible that joins with the Temporal Bone
Mental Foramen
Small openings in the jaw bone through which blood vessels/nerves exit
Styloid Process
Small, pencil-like shaped projection that comes off of the bottom of the Temporal Bone
lacrimal gland
produces the lacrimal fluid or tear.
what is the depression between the medial and the lateral plates
pterygoid fossa.
middle part of the skulll from the inferior view
pterygoing process of the spehenoid bone.
from where does foramen spinosum receives its name from
spine of the spenoid bone
Coranoid Process
Triangular-shaped structure that projects off of the front part of the mandible
how many sutures does the maxillary have
1. the transverse palatine suture and articulation between the two palatine processes of the maxillae and the two horizontal plates of the palatine bones.
how many bones are cover by the occipital bones
6.... pharyngeal tubercle, jugular notch of the occipital bone, occipital condyle, basilar portion, hypoglossal canal, foramen magnum,....
how many bones are in the cranial
8... single occipital, frontal, sphenoid, and the ethmoid as well as the paired parietal and temporal.
Nasal Bone
Bone of the bridge of the nose
Ethmoid Bone single
Bone that is deep to the Frontal bone and is found on the interior of the skull
Sphenoid Bone single
Bone that is on the interior portion of the skull and holds the base of the brain
Occipital Bone single
Bone that makes the base of the skull
Frontal Bone/ single and articulates with?
Bone that makes the forehead, forms the anterior part of the skull superior to the eyes is a single bone. this bone articulates with the patietal bones spenoid bone lacrimal bones nasal bones ethmoid bones zygomatic bones and maxilla
Lacrimal Bone (paired)
Bones that are associated with the tear ducts of the eye
Parietal Bone (Paired)
Bones that cover the majority of the skull; separated by the sagittal suture
Temporal Bone (Paired)
Bones that cover the sides of the head, near the ear
Zygomatic Arch
Bridge-shaped structure that connects the Temporal Bone to the Zygomatic Bone
Zygomatic Bone
Cheek bone
External Auditory Meatus
Ear canal of the Temporal Bone
Maxilla (Maxillary Bone)
Facial bone
what is porterolateral to the foramen lacerum?
a round opening in the petrous part of the temporal bone the CARATOID CANAL.
temporal bones
are paired cranial bones that form the lateral walls of the skull in the temporal region and part of the base of the skull in the auricular region.
hard palate form the inferior view
at the anterior part of the skulls inferior surface is the hard palate border by the alveolar process of the maxilla.
what is on the stout of the occipital
basilar part a 4 sided plate anterior to the formen magnum is a midline projection the phrryngeal tubercle.
what bones can be seen from the inferior view?
maxillary, zygomatic, vomer, temporal, sphenoid occipital, and palatine bones.
each pterygoid process consist of a thins
medial pterygoid plate and a flattened lateral pterygoid plate.
parietal bones articulate with what bones?
occipital, frontal, temporal, and sphenoid bones, they articulate with the occipital bone at the lamboildal sutures.
what can be seen in the INTERNAL SKULL FORM THE SUPERIOR VIEW..
optic canal, superior orbital fissure, foramen ovale ,foramen spinosum, foramen lacerum, jugular foramen magnum.