skeletal system Flashcards
(59 cards)
Axial
80 bones
head, vertebrae, ribcage
Appendicular
126 bones
limbs, pelvis
movement
total bones in body
206
skeletal system FUNCTION
support facilitates movement
protects organs
Allows muscles to move
5 classifications of bones
epiphysis diaphysis articular periosteum medullary
epiphysis
END
diaphysis
SHAFT
articular cartilage
PADDING
periosteum
covers entire bone
medullary cavity
hollow chamber filled with bone marrow
function of red bone marrow
carry oxygen to the lungs and organs
function of yellow bone marrow
aids in the storage of fats in cells called adipocytes.
compact bone tissue
provides protection and strength to bones
spongy bone tissue
structural support & flexibility without the weight of compact bone
found in most areas of bone not subject to great mechanical stress
hinge joint
elbow
bending & straightening
saddle joint
thumb
one concave one convex
planar (plane) joint
in hands
slide over each other
pivot joint
allows only rotary movement around a single axis
wrist
condyloid joint
knuckles
ball and socket joint
hip
joint in which the rounded surface of a bone moves within a depression on another bone, allowing greater freedom of movement than any other kind of joint.
protraction
movement of ‘reaching out’ to something
shoulders
retraction
posterior medial movement of the scapula on the thoracic wall
causes the shoulder region to move posteriorly
picking something up
depression
These movements are used to shrug your shoulders
downward movement of scapula
elevation
upward movement of scapula
