A&P lab 1 week 5

80 bones

How many bones in the axial skeleton

22

bones in the skull

24

bones in the vertebral column

mandible

what is the only movable bone in the skull

frontal bone

forms the anterior cranium. most anterior part makes the forehead

glabella

smooth part of the forehead above and between the eyebrows

Parietal bones

forms the bulk of the cranial vault- most of the superior and lateral aspects of the skull. the back top. one of strongest bone in skull

occipital bone

forms the skull's posterior wall, the back bottom, easiest part to get a concussion

foramen magnum

opening in occipital bone, bottom of the skull so the column can connect there

temporal bones

lie inferior to the parietal bones

temporal bone

mastoid process. site of muscle attachment

temporal bones external auditory meatus

ear canal

crista galli

ethmoid bone. "rooster's crest"

suture

type of fibrous which only occurs in the skull

coronal structure

articulation between parietal and frontal bone anteriorly

lambdoid suture

articulation where parietal bones meet the occipital bone posteriorly

sagittal suture

articulation of the parietal bones superiorly

squamous suture

articulation where parietal and temporal

hard palate

bony plate that forms the roof of the mouth and the flour of the nasal cavity

paranasal sinuses

hollow, air-filled spaces located within certain bone of the skull, reduce bone mass and lighten the skull, communicate with nasal cavity

frontanel

allow the fetal skull to be compressed slightly during birth

vertebral cloumn

consists of vertebrae each of which is separated and united by intervertabral disc, flexible column

vertabrae

7 cervical, 12 thoraticm 5 lumbar, sacrum-5 fused, coccyx-4 used

vertebral arch

forms the posterior portion of each vertebrae

atlas

first cervical vertabra (c1) is called

lumbar vertebrae

carry the greatest amount of body weight

sternal angle

manubrium and body join at the sternal angle

cervical

The vertebrae of the ______ region include the transverse foramen, which serve as passageways for the vertebral arteries.

lumbar

The five vertebrae of the _____ region must support the weight of the head, neck, and trunk.

sacrum

______ is a single bony element that articulates with the ilium of the pelvic girdle.

coccyx

The small bone in the _____ articulates with the fifth fused sacral vertebra.

thoracic

The twelve pairs of ribs articulate with the vertebrae in the _______ region.