skeletal system Flashcards
(33 cards)
functions of the skeletal system
support body
protection
movement
Forms blood cells—process is called
hematopoiesis
4 types of bones
Long, short, flat, irregular
two long bones
humerus, femur
short bones
carpals and tarsals
flat bones
skull, sternum, ribs and hip bones
irregular bones
vertebrae, facial and sinus bones
hallow tube of hard compacted bone
diaphysis/ shaft
hallow space inside the diaphysis that contains yellow marrow
medullary cavity
end of the bone made of spongy bone that contains red bone marrow
epiphyses
thin layer that covers the epiphysis; provides cushion
articular cartilage
strong, fibrous membrane covering bone everywhere except joint surfaces
periosteum
thin membrane that lines medullary cavity
endosteum
what are cartilage cells called
chondrocytes
bone FORMING cells
osteoblasts
bone DISSOLVING cells
osteoclasts
when osteoblasts are trapped and stop forming bone
osteocytes
what bones consists in the axial skeleton
skull, spine, thorax
what consists of appendicular skeleton
upper & lower extremities
the difference in male vs female pelvis
female is broad and shallow
male is deep and narrow
synarthrosis
no movement in joint
amphiarthrosis
slight movement in joints
diarthrosis
free movement of joint
Articular cartilage
Covers joint ends of bones and absorbs jolts
