Skeletal System Flashcards
Which cranial bones are single?
occipital bone, frontal bone, sphenoid bone, and ethmoid bone.
Which cranial bones are paired?
parietal bone and temporal bone.
Which facial bones are single?
vomer, mandible, maxillae
Which facial bones are paired?
lacrimal bones, nasal bones, inferior nasal conchae, zygomatic bones
Where is the frontal bone
forehead
Where is the occipital bone
back of the head
Where is the parietal bones
sides of head
where is the temporal bones
temples
where is the sphenoid bones
centerally located bat shaped
Where is the ethmoid bones
behind the eyes and nose
the portions of the temporal bone.
♣ Squamous: large, fan-shaped, flat part
♣ Tympanic: Small, irregularly shaped, associated with ear canal
♣ Petrous: inferiorly located and helps form the cranial floor
° Perpendicular plate:
viewed within the structure of the nasal cavity which aids the nasal septal cartilage and vomer in forming the nasal septum.
° Crista galli:
a verticle midline continuation of the perpendicular plate superiorly into the cranial cavity, serves as an attachment for layers covering the brain
° Horizontal cribiform plate:
within the inner surface of the cranial cavity. Present on the superior surface of the ethmoid bone surrounding the crista galli.
o Where is the vomer bone located?
° Located in the midsagittal plane within the nasal cavity.
Know where the hyoid bone is located
° Superior and anterior to the thyroid cartilage of the larynx.
o Know what the piriform aperture refers to.
° The hole on the skull where the nose is.
What is a suture?
° The union of bones joined by a fibrous tissue that appears on the dry skull as a jagged line.
° Coronal Suture:
extends between the frontal bone and both parietal bones (paired).
° Sagittal suture:
between parietal bones at the midline (single).
° Lambdoidal suture: located between the occipital bone and the parietal bones.
located between the occipital bone and the parietal bones.
o What is the highest point of the sagittal suture called?
° Vertex
Know the contact points where certain sutures meet
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Process
any prominence on a bony surface
