Skeletal Bones 6 Bone Histology

Question 1

Bone is a type of?

Answer 1

Connective tissue that contains cells and matrix

Question 2

Define Osteogenic Cells:

Answer 2

Bone Stem Cells that create other bone cells such as Osteoblasts + Osteocytes

Location: Endosteum + Periosteum

Question 3

Define Osteoblasts:

Answer 3

Bone-forming cells, form new bone matrix

Location: Endosteum + Periosteum

Question 4

Define Osteoclasts:

Answer 4

Bone Dissolving Cells

Resorb + remove bone matrix

Location: Endosteum + Periosteum

Question 5

Define Osteocytes:

Answer 5

Mature Bone Cells that develop from Osteoblasts that have been surrounded by bone matrix

Function: Maintain bone matrix

Location: Compact +Spongy Bone

Question 6

Define Bone Matrix:

Answer 6

Calcified Matrix made up of Collagen fibers + Calcium Phosphate

Question 7

Define Collagen Fibers:

Answer 7

The main organic component of bone

Protein provides strength + flexibility

w/out Collagen fibers bones will be too brittle

Question 8

Define Calcium Phosphate:

Answer 8

Main inorganic mineral

Function: acts like hard cement to hold up bones and prevent bones from sagging

Question 9

Define Bone Homeostasis:

Answer 9

The Maintenance of Bone matrix

1. Osteocytes recycle collagen + Calcium phosphate
2. Osteocytes release chemicals to dissolve adjacent matrix + release the minerals into bloodstream
3. Osteocytes rebuild the Matrix by depositing Calcium Phosphate