BIO axial skeleton

frontal bone

forehead bone

parietal bone

head right in the middle, ponytail

temporal bone

ear lobe, temples

occipital bone

low ponytail area

ethmoid bone

makes up your nasal septum, part of sinus cavity

foramen magnum

biggest hole in the head, where spinal cord starts

coronal suture

zigzag, connects frontal to parietal bones

sagittal suture

joint between the 2 parietal bones

anterior fontanel

cartilage between the incomplete bones, middle of the head, soft spot

zygomatic bone

cheek bones

maxilla

upper jaw

nasal bone

bridge of nose

mandible

lower jaw

paranasal sinus

air filled space located in the bones of the skull

How many bones are in the skeleton

206 bones

sternum

The long flat bone that forms the center front of the chest wall

true rib

(#1-7) connect directly to sternum

false rib

(#8-10) don’t directly connect to the sternum

floating rib

(#11-12) no anterior attachment

cervical vertebrae

#7 neck part of spine

thoracic vertebra

#12 middle back, big chunk of body, looks like giraffe

lumbar vertebra

#5 lower area, looks like moose

sacrum

triangular shaped bone, 5 fused bones

coccyx

“tail bone”

atlas

(C1) first vertebra

axis

(C2) 2nd vertebra

dens of axis

big piece attached to axis

vertebral body

main weight bearing compact

vertebral canal

hole of the vertebra, spinal cord goes through here

intervertebral disk

cartilage between vertebra, cushion/shock absorber