SKELETAL SYSTEM

Question 1

Osteoclasts are?

Answer 1

Bone ‘eating’ cells

Question 2

Osteoprogenitor/Osteogenic cells function to?

Answer 2

Heal and cyclical bone replacement

Question 3

What does trabeculae contain?

Answer 3

Contain osteocytes in the lacunae, which connected by canaliculi

Question 4

Osteon is also known as?

Answer 4

Haversian Systems

Question 5

Nutrient Arteries supply…?

Answer 5

The inner compact bone, spongy bone, and red bone marrow

Question 6

Osteocytes are?

Answer 6

Mature bone cells

Question 7

Osteoblasts are?

Answer 7

Bone building cells

Question 8

The external layer of all bone is known as?

Answer 8

Compact bone/Cortical/Dense

Question 9

The red marrow is for?

Answer 9

Blood cell formation

Question 10

The space within the diaphysis is known as?

Answer 10

Medullary Cavity/Marrow Cavity

Question 11

The diaphysis is what part of the bone?

Answer 11

The shaft - main portion of the bone

Question 12

The yellow marrow is for?

Answer 12

Fat storage

Question 13

Describe Lacunae.

Answer 13

The space between the rings, containing Osteocytes

Question 14

Describe the Central Haversian Canal.

Answer 14

A hole through the osteon which blood and lymphatic vessels run

Question 15

The metaphyses is what part of bone?

Answer 15

Inbetween the diaphysis and the epiphyses

Question 16

What is periosteum?

Answer 16

A CT covering surrounding bone

Question 17

Concentric Lamallae are?

Answer 17

Rings of calcified bone matrix around the central canal

Question 18

From middle age, bone loss ______ bone growth.

Answer 18

Exceeds

Question 19

Canaliculi are?

Answer 19

Small channels sticking out from lacunae allowing osteocytes communication

Question 20

Which part of bone contain the epiphyseal growth plate/epiphyseal line?

Answer 20

Metaphyses

Question 21

The matrix is comprise of?

Answer 21

25% water, 25% collagen, 50% mineral salts

Question 22

The inner layer of periosteum contain?

Answer 22

Contains bone forming cells

Question 23

Describe Volmann’s Canals.

Answer 23

Transverse holes connecting the inner and outer portion of bone

Question 24

In young adults, bone growth is ______ to bone loss.

Answer 24

Equal

Question 25

The outer layer of periosteum is a…?

Answer 25

A tough, supportive/protective layer

Question 26

Spongy Bone/Cancellous Bone contains?

Answer 26

Trabeculae

Question 27

Periosteal Arteries supply…?

Answer 27

The periosteum and outer compact bone

Question 28

The epiphyses is what part of the bone?

Answer 28

The ends of the bone