46 terms

Exercise 9: Bone Surface Markings

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fissure
narrow slit or cleft in a bone, opening for blood vessels and nerves
foramen
opening or hole, opening for blood vessels and nerves
fossa
shallow depression, muscle attachment or articulation (joint)
meatus
tube-like passage way or opening, passageway or canal for blood vessels and nerves
condyle
smooth, rounded articular process, articulation
ramus
a small branch, articulation
spine
pointed process
supraorbital foramina
frontal bone, 1 opening located above the orbit of each eye for supraorbital nerve and artery
supraorbital ridges or margins
frontal bone, thickening of frontal bone superior to orbit of each eye
external auditory meatus
temporal bone, tube-like opening for the ear canal
mastoid process
temporal bone, rounded projection posterior to external auditory meatus, attachment for muscles
styloid process
temporal bone, long,thin projection on inferior skull surface, attachment for muscles and ligaments of tongue and neck
zygomatic process
temporal bone, projection that articulates with the zygomatic bone
mandibular fossa
temporal bone, depression in mandible for articulation with condylar process (mandibular consdyle)
foramen lacerum
temporal bone, jagged opening filled with cartilage in a living person
carotid foramen
temporal bone, canal, formen for interan carotid artery
jugular foramen
temporal bone, foramen for jugular vein and cranial nerves IX, X, and XI
stylomastoid foramen
temporal bone, opening for an artery and cranial nerve VII
internal auditory meatus
temporal bone, opening for cranial nerve VIII
foramen magnum
occipital bone, opening through which spinal cord connects to lower brain
hypoglossal foramina
occipital bone, openings for cranial nerves XII
occipital condyles
occipital bone, rounded processes that articulate with the atlas (C1)
cribiform plates
ethmoid bone, one on either side of crista galli, form roof of nasal cavity
crista galli
ethmoid bone, projection for attachment of membranes covering brain
olfactory foramina
ethmoid bone, tiny holes in cribiform plates for cranial nerves I
perpendicular plate
ethmoid bone, forms superior part of nasal septum
middle nasal conchae
ethmoid bone, scroll like projections on each lateral wall of nasal cavity
superior nasal conchae
ethmoid bone, scholl-like projections on each lateral wall of nasal cavity
foramina ovale
sphenoid bone, openings for mandibular branch of cranial nerve V
foramina rotundum
sphenoid bone, openings for maxillary branch of cranial nerve V
sella turcica
sphenoid bone, bony projection that surrounds and protects pituitary gland
greater and lesser wings
sphenoid bone, form anterior and lateral floor of cranial cavity
optic foramina
sphenoid bone, openings from cranial nerve II
inferior orbital fissures
sphenoid bone, openings for blood vessels and nerves
superior orbital fissures
sphenoid bone, openings for blood vessels and cranial nerves III, IV, V, and VI
pterygoing processes
sphenoid bone, wing like projections on the base of the skull in the middle section of the sphenoid bone
alveoli
maxillae, tooth sockets
palatine process
maxillae, fused processes that form the anterior part of hard palate
alveoli
mandible, tooth sockets
body
mandible, curved, anterior portion of mandible
mental foramina
mandible, openings in chin for nerves and blood vessels
rami
mandible, posterior branches, one on either side of the body of mandible
condylar processes
mandible, rounded processes on rami that articulate with temporal bone at the mandibular fossa to form the TMJ
coronoid processes
mandible, triangular projections of rami anterior to the condylar processes
lacrimal fossa
lacrimal bone, canal that houses lacrimal sac, formed from the maxilla and lacrimal bone
temporal process
zygomatic bone, projects posteriorly, temporal process of zygomatic bone and zygomatic process of temporal bone form the zygomatic arch