Bio197-lab9&10BONES Flashcards
Parietal bone
Forms the sides of the head
Frontal bone
Forms the forehead
Temporal bone
Surrounds the external ear opening (tympanic part)
Squamous suture
Separates the temporal (around ear) and parietal (sides of head) bones
External acoustic meatus
Canal leading from eardrum to middle ear
Styloid process
Needle-like pointed projection near the jaw and below the external acoustic meatus
Mastoid process
Rough projection below the external acoustic meatus and styloid process
Looks like a corner, parallel to jaw
Occipital bone
Back/ lower part of your head
Lamboid suture
Across back of skull
Separates parietal (sides of head) and occipital (back of head) bones
Foramen magnum
Large circular opening at the base of occipital lobe
Where spinal cord joins the brain
Occipital condyles
Round/kidney shaped projections(2) on base of skull next to the foremen magnum (opening)
Sphenoid bone
“Bat shaped,” behind eye balls in skull, is the width of skull
Ethmoid bone
BACK OF THE EYE SOCKET for test
NOT: Little bones in skull in the nose area (3)
Forms the roof of nasal cavity, upper nasal septum, and part of the medial orbit walls
Mandible
Lower jaw bone
Mental foramen
2 little holes in the front of the jaw
Sagittal suture
Down the middle
Separates the parietal bone (sides of skull)
Occipital mastoid suture
Separates the occipital (back lower skull) and temporal bones (ear)
Maxillae
2 fused bones to form upper jaw, below nose, part of eye sockets
Lacrimal bone
Small bone forms part of eye socket, between ethmoid and maxilla
Right off nasal bone
Zygomatic bone
Cheek bone, side of eye sockets
OFF EYE
Nasal bone
Forms the bridge of nose
Vomer
Separates nasal cavity, forms nasal septum
Frontal sinus
Above eyebrows/ forehead
Ethmoid air cells
In-between eyes
Sphenoidal sinus
On bridge of nose, temples
BELOW ethmoid air cells
Maxillary sinus
Cheeks
Atlas
C1, no spinous process, giant vertebra, foramen
Allows head to move up and down
Axis
C2, “dens,” fits into axis
Allows head to turn right to left
Cervical vertebrae
7 total C1-C7
Smallest, lightest, triangular, thin, get longer
Thoracic vertebrae
12 total, Mid-back, long thin processes, downward angle
“GIRAFFE”
Lumbar vertebrae
5 total, short thick, stubby processes
“MOOSE”
Sacrum
5 fused bone, triangle shaped
Coccyx
Triangular tip/point of sacrum
Fontanelles
Fibrous membranes that connect infant skull bones together.
They don’t have skull sutures
Clavicle
Collar bone, wavy shape
Acromial end of clavicle
Enlarged, rough end
Connects to shoulder
Sternal end of clavicle
Smooth, pointed edge
Connects to sternum
Scapulae
Shoulder blade
Spine- on scapulae
On the back of shoulder blade, a raised line, diagonal
Acromion- scapulae
Connected to the spine, sticks out, rough rounded part
Coracoid process- scapulae
The other process that sticks out, pointed more, next to the acromion, attachment point for joints/muscles
Supraspinous fossa- scapulae
Area above the spine
Infraspinous fossa
Area below the spine
Medial border- scapulae
Inside of shoulder blade
Medial-towards the center of body