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Flashcards in Anatomy and Physiology Deck (16)
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1

Sutural Bones

-Small, irregular bones
-Found between the flat bones of the skull

2

Irregular Bones

-Have complex shapes

3

Short bones

-Small and thick (ankle/wrist)

4

Flat bones

-Thin with parallel surfaces

5

Long Bones

-Long and thin

6

Sesamoid bones

Small and flat

7

Structure of long bone

Diaphysis, Epiphysis, Metaphysis

8

Osteocytes

-maintain bone matrix
-Live in lacunae
-Do NOT divide

9

Two major functions of osteocytes

-Maintain protein and mineral content of matrix
-Repair damaged bone

10

Osteoblast

-Secrete matrix cpds.
-Osteoblasts surrounded by bone become osteocytes

11

What is an osteoid

Matrix produced by osteoblasts, not yet calcified to form bone

12

Osteoprogenitor Cells

-Divide and produce osteoblasts
-Fracture repair

13

Osteoclasts

-Secrete acids and protein-digesting enzymes
-Dissolve bone matrix and release stored minerals

14

What is homeostasis?

Bone building by osteoblasts and bone recycling by osteoclasts must balance

15

What causes osteoblasts to build bone?

Weight-bearing excercise

16

What is ossification?

The process of replacing other tissues with bone