axial skeleton Flashcards
structures of bones include
- articulations
- landmarks
- foramina
what type of structure indicate contacts with other bones?
articulation
what type of structure indicate areas of muscle and ligament attachment?
landmarks
what type of structure indicate openings for nerves and blood vessels?
foramina
Axial Skeleton
Forms the longitudinal axis of the body
how many bones does skull have?
- 8 cranial bones
- 14 facial bones
Bones associated with the skull
- 6 auditory ossicles
- The hyoid bone
bones in vertebral column
- 24 vertebrae (singular = vertebra)
- The sacrum
- The coccyx
bones in thoracic cage
- 24 ribs
- The sternum
function of axial skeletion
- Attaches to muscles of head, neck, and trunk
- Performs respiratory movements
- Stabilizes parts of appendicular skeleton
what does the skull protect?
- The brain
- Entrances to respiratory system
- Entrance to digestive system
function of facial bones
Protect and support entrances to digestive and respiratory tracts
Cranial Bones
- Enclose the cranial cavity
- Which contains the brain
Facial Bones
have 2 parts:
- superficial facial bones
- deep facial bones
superficial facial bones
muscle attachment
deep facial bones
Separate the oral and nasal cavities
which type of facial bone will form nasal septum?
deep facial bones
sinuses
Cavities that decrease the weight of the skull
which cavity lined with mucous membrane and protect entrance of respiratory system?
sinuses
sutures
The immovable joints of the skull
four major sutures
- Lambdoid suture
- Coronal suture
- Sagittal suture
- Squamous suture
lambdoid suture
separates the occipital from the parietal bone
which type of suture contain sutural bone?
lambdoid suture
sagittal suture
- between parietal bones
- from lambdoid suture to coronal suture
squamous suture
Form boundaries between temporal bones and
parietal bones
Coronal Suture
Attaches frontal bone to parietal bones