anatomy bone quiz

What are the 5 jobs of bone?

support - bearing the weight of the body

protect - encasing essential organs (rib cage protects lungs)

movement - joints provide movement for bones

storage - storage of minerals to be released into the bloodstream storage of fat in yellow bone marrow

manufacturing - production of red and white blood cells from red bone marrow, called hematopoiesis

what are bones classified by?

their shape

Flat bones

scapula

Long bones

femur

irregular bones

vertebra

short bones

wrist

sesamoid bones

knee cap

bones are a solid blank of living cells and blank surrounded by blank deposists

matrix, fibers, calcium

What are the 2 basic regions of long bones

diaphysis - shaft, long part of bone

epiphysis - ends of bone

between diaphysis and epiphysis layers, what is the thin layer of internal cartilage called?

epiphyseal plate (growth plate)

The ends of epiphyses are covered with an external layer of cartilage called what?

articular cartilage

What does articular cartilage do?

provides smooth movement of joints and cushion from shock

Where is the medullary cavity found?

a hollow cavity in the diaphysis of the long bone

what fills the cavity of young people

red bone marrow

age causes the red marrow to be replaced with what

fatty yellow bone marrow

what is hematopoises

in the bone marrow that new blood cells are produced

what is the outer layer of bone made of

a tough connective tissue called periosteum

what is the periosteum

location of muscle attachment and bone repair

what is beneath the periosteum

a thick layer of compact bone

what is at the end of long bones beneath the compact bone

spongy bone layer