CHAPTER 7

Question 1

general look of long bone

Answer 1

longer than wide, shaft,
compact bone on outside and bone marrow inside, contains spongy bone at ends

Question 2

Diaphysis, epiphyses, metaphysis, marrow cavity

Answer 2

D: shaft of bone (compact bone)
E:ends of bone (spongy bone)
M: between D and E
MC: contains yellow marrow inside

Question 3

Periosteum, endosteum, aurticular cartilage

Answer 3

P: tissue covering bone surface
E: lining of marrow cavity
AC: at ends of bones, absorbs shock

Question 4

structure of flat bone

Answer 4

spongy bone sandwich, compact bone covering spongy bone

Question 5

name the four bone cells and function (3 together 1 alone)

Answer 5

Osteogenic: stem cells of bone tissue
Osteoblasts: calcium build up
osteocytes: matures bones
Osteoclast: removes calcium salt and recycle bone matrix, release enzymes for growth and repair and homeostasis

Question 6

structure of compact bone

Answer 6

makes up most of diaphysis and lies over spongy bone in epiphyses
-protection, support, stress resistance
-arranged in units called osteons containing osteocytes around central canal for blood vessels

Question 7

structure of spongy bone

Answer 7

consists of trabeculae surrounding many red marrow filled spaces
-found where bones aren’t heavily stressed, mostly in short, flat, irregular bones besides epiphysis in long bones