The Axial Skeleton Flashcards
What is the structural joint type for the skull?
Sutural joint (with exception of tmj and teeth)
Approximately how many bones make up the skull? Pairs?
Approx 29 bones and 11 paired
When does your skull size increase the most?
Between 2-5 years of age
Your cranium increases capacity until approximately _____
14-16 years of age
What is the clinically important region? Why?
Pterion. Because it is thin, and just deep to it is the meningeal artery, where damage to it can lead to intracranial bleeding
What is the pterion
Thinnest area of the skull, by the temple
Skulls helps protect ___
Soft tissue
____% of deaths come from head injuries
10%
The two main cranial divisions
Cranial bones and facial bones
Cranial bones form _______ over the brain. Composed of approximately _____ flat bones. Mostly intramembranous ossification.
Protective shell; 8
Facial bones form ______. Composed of _____ irregular bones. Contains a combo of intramembranous and endochondral ossification
Bones of the face; 10-14
Fetal skull is about ______ the height of the skeleton, whereas an adult skull is approximately ______ the height of the skeleton.
1/2 - 1/4; 1/8
The fetal facial bones form ____ of the fetal skull whereas the adult facial bones form _____ of the adult skull.
1/8; 1/3
The fetal skull has a more ____ shape, and the adult skull had a more ___ shape
Rounded; oval
The fetal skull has little or no ______, where the adult skulls do have them.
Paranasal sinuses
