Flashcards in Skeletal System Deck (121)
How many sacrum vertebrae are there
How many coccyx are there?
Put together; where they meet
Projection or outgrowth of tissue from after body
Nodule/small eminence, especially one on a bone for attachment of a tendon
What percent of our skeletal system being broken down and remade in one year?
Smallest bones in the body
3 ear bones
Floating bone; only bone not connected to anything
What kind of cartilage is the articular cartilage at the ends of long bones (epiphysis)?
What kind of cartilage is in the ribs?
Another name for the body of vertebrae
What are four main functions of bone?
Support/protection, body movement, inorganic salt storage, and blood cell formation
Hint: SIP 'double' B
How many bones are in the adult
How many bones in newborn
Axial skeleton consists of:
skull, middle-ear bones, hyoid, rib cage, vertebral column, and sternum
Appendicular skeleton consists of:
upper/lower extremities, and the pectoral and pelvic girdles
shaft of long bone
ends of long bone
slender plates of spongy bone
Function of osteoblasts
Make bone by making matrix (concentric circles); store calcium in bone; (become osteocytes)
Where are osteogenic cells?
Endosteum, inner periosteum, and the Haversian canals; only source of new cells of osteoblasts and osteocytes
osteoblasts trapped in bone matrix; remain active in maintenance of bone
bone-DISSOLVING cells that form by fusion of monocytes; break down bone and release its minerals to the blood
What comes out of bone when osteoclasts break it down?
As you get older you get (more/less?) osteoclasts
What helps you to absorb calcium
What systems won't work without calcium
muscular, skeletal, and nervous
Organic matter in bone
collagen, GAGS, proteoglycans, and glycoproteins