Tri A - Bones

Question 1

What is the function of bones?

Answer 1

Support
Protection,
Movement

Question 2

What are the 2 types of bone? and describe them

Answer 2

Compact - dense, outer layer
Cancellous - soft, spongy inside

Question 3

What are the 5 bone catagories?

Answer 3

Long,
Short,
Flat,
Irregular,
Sesamoid

Question 4

Name the 3 bone cells and their role?

Answer 4

Osteoblasts - bone forming cells
Osteocytes - mature bone cells
Osteoclasts - break down and reabsorb bone

Question 5

Describe Long bones

Answer 5

Bone longer than wider
Expanded ends (epiphyses)

Question 6

Describe Short bones

Answer 6

Usually cuboidal, same thickness, width
Support and structure

Question 7

Describe Flat bones

Answer 7

Thin cancellous bone, 2 layers of compact bone
Protection and muscle attachment
Filled with red marrow

Question 8

Describe Irregular bones

Answer 8

Protects nerve tissue, skeletal muscle attachment

Question 9

Describe Sesamoid bones

Answer 9

Found near joints
Protects tendon as they move over bone

Question 10

What is red marrow and where is it found?

Answer 10

Found within the bones
Makes red blood cells