skeletal system Flashcards
how many bones at birth and adulthood
over 300, over time some bones fuse and ad adulthood we have 206 bones
function and purpose of skeletal system
Framework for the body.
Protects organs in the body.
Blood cell production in the bone marrow.
Movement.
Mineral Storage, particularly calcium and phosphorus.
axial skeleton
skull, ribcage, vertebral column
appendicular skeleton
Upper and lower limbs and the girdles that attach the limbs to the axial skeleton.
joint
Point where 2 bones meet or articulate
fixed joints
Consists of many bones together (pelvis, skull)
hinged joints
2 bones that form a bend in only one direction (elbow, knee)
ball and socket joints
End of one bone looks like a ball that fits into the socket of the other bone (acetabulum
longest bone in body
femur
smallest bone in body
stapes
cartilage
Flexible bone-like substance making up ears, nose and parts of the ribs, knees and elbow
difference between men and women skeleton
Pelvic girdle size, and angle larger in women
Rib cage smaller, tapered at bottom and more rounded in women
Lower back is more lordotic in women
Bones of the jaw and wrists are larger in men
closed/simple fracture
bone is broken without external wound
hairline fracture
minor fracture where all portions of the bone are in perfect alignment
open or compound
Bone is broken, with external wound.
Bone pieces often pierce through skin.