Components of bone

Question 1

name the cells in bones and where they are found

Answer 1

1) Osteogeneic cells: Divide and produce osteoblasts found in nutrient after, periosteum and endosteum
2) Osteoblasts- Build: Endosteum and periosteum
3) Osteoclasts- Remove: endosteum and periosteum
4) Osteocytes-maintain: found in lacunae

Question 2

What type of tissue is periosteum

Answer 2

dense irreg

Question 3

What is periosteum continuous with

Answer 3

Tendons and ligaments

Question 4

What is Endosteum made of and where is it found

Answer 4

Delicate CT. Bone widening, repairing and remodelling. It lines spongy bone, medullary cavity, and central canals of osteons

Question 5

Compact bone

Answer 5

Thin layer around exterior for strength and protection, thick layer around medullary cavity

Question 6

Spongy bone

Answer 6

Trabeculae lined with endosteum. Reduce weight, protect marrow.

Question 7

Differences between flat and long bones

Answer 7

Different location. Different ossification method. Doesn’t have epiphysial plate and line, doesn’t have medullary cavity or articular cartilage.

Question 8

Where is the central canal and what does it have

Answer 8

Middle of osteon, lined with endosteum, passage for BC and nerves.

Question 9

what are lamellae made of

Answer 9

calcium crystals and collagen

Question 10

what is perforating canal

Answer 10

connects BV and nerves

Question 11

Mircostructure of spongy bone

Answer 11

No osteons
has trabecular
no capillaries, osteocytes get nutrients from marrow

Question 12

What layers would you pass through

Answer 12

Epidermis (Keratinized strat.) 
papillary (areolar)
Reticular & adipose (dense ireg) 
Hypodermis (Areolar) 
Skeletal musc.
periosteum 
compact
spongy bone