Bones and the Skeletal System Flashcards
long bones
length exceed width
short bones
width exceed length
flat bones
e.g. frontal lobe (protection)
irregular bones
have gaps to allow blood vessels to fit through
sesamoid bones
bones existing within tendons (increase angle of tendon to increase tendon/muscle efficiency)
epiphysis
ends of a long bone which form joints
diaphysis
the shaft/straight part of the long bone
metaphysics
connects epiphysis to diaphysis
epiphyseal line
growth plate/line at which bone fuses together
periosteum
connective tissue lining the diaphysis
spongy bone
towards centre of epiphysis (aerated)
compact bone
towards edge of bone
medullary cavity
centre of diaphysis
bone marrow
within medullary cavity
cavitated joint
gap between joints
synovial joints
freely movable joints
solid joints
no gap between joints
fibrous joints
no movement between joints (teeth) and held together by fibrous tissue
cartilaginous joint
cartilage present between joints (some movement)
primary cartilaginous joint
synchondrosis (growth plates) - hyaline cartilage often fuses to bone so only present in juveniles
secondary cartilaginous joint
symphysis - cartilage between two bones (pelvis)