Axial Skeleton Flashcards
(80 cards)
How many bones are in the skull
28 bones
How many the cranium or head
8
How many bones in the face
14
How many bones in the ossicles
6
What is special about the ossicle
It is completely ossified as birth
Smallest bones in the body
Mandible
movable bone in the face
Strongest and largest bone in the skull
What are immovable joints called
Sutures
Describe a sinus
It is embedded in the bones, and opening within a bone, lined with mucus
How did a sinus get its name
Named for the overlying bone
How did a sinus get its name
What is in the sinus
Only air and mucus
Sinusitis
Inflammation with the increased mucus that causes cavity to fill up and causes pressure and gives a headache
Sphenoid
Single bone with extends across the skull behind each orbital cavity
Forms the temporal
Ethmoid
Not visible from the outside
Posterior to the nasal bone
What are the special features of the mandible
The mandibular condyle which connects to the temporal bone
And the TMJ
Maxilla
Upper jawbone and extends into the mouth forming the hard palette
Two bones which fuse before birth
Hyoid
Single bone
Located under the neck under the tongue
Only floating bone in the body
Vertebral column
Flexible
After birth you have 26 before birth you have 36 to 34
What are the bones in the invertebral column that have invertebral discs
Cervical, thoracic, lumbar
Cervical
Seven bones, and
Three foramens
Thoracic
Each thoracic vertebra is connected to a rib on each side, 12 bones, looks like a giraffe
Lumbar
5 bones
Lower back, biggest of all, looks like a moose, lower back
Whatโs bones and the vertebral column are fused together
Sacrum and coccyx
What is the common name for the sacrum
Hip bone