Axial Skeloton Flashcards
Understand Skeleton Axial
skeleton
dried up body, composed of bones, cartilages, joints and ligaments
Skeleton accounts for what percentage of body mass?
20%
What is the skeleton’s main component?
bones
Function of ligaments
connects bones and reinforce joints
Joints
the junction between bones
Two parts of skeleton
Axial and appendicular
Axial
80 bones
skull
vertebral column
thoracic cage
Appendicular
bones of the limbs and their girdles
Three regions of the axial skeleton?
skull
vertebral column
thoracic cage
bony thorax
How many bones in axial ?
80 bones are in the axial skeleton
Skull
the body’s most complex bony structure
What is the skull formed by?
the cranium and facial bones
How many bones are in the cranium?
8
how many bones are in the facial bones?
14
Cranium
protects brain and is the site of attachment for head and neck muscles
Facial bones supply the frame work of what?
face, sense organs, and the teeth
Facial bones provide what?
openings for the passage of air and food
Facial bones anchor?
the facial muscles of expression (smiling)
What are the eight cranial bones comprised of?
2 parietal Ethmoid 2 temporal Sphenoid frontal occipital
Cranial Bones are desrcibed as what?
thin and strong for their weight
foramen
opening in bones for nerves and blood vessels to pass through
frontal bone forms what?
the anterior portion of the cranium