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.