Skeletal Bioscience

Question 1

What does the skeletal system support?

Answer 1

Forms framework of body

Question 2

What does the skeletal system protect?

Answer 2

Brain, spinal cord, heart and lungs

Question 3

What type of blood cell’s does the skeletal system produce?

Answer 3

RBC’s, WBC’s and platelets in red bone marrow within the epiphysis

Question 4

Where is fat stored in the skeletal system?

Answer 4

In yellow bone marrow within the epiphysis

Question 5

What is an example of a long bone

Answer 5

Humerous

Question 6

What is an example of a short bone

Answer 6

Talus

Question 7

What is an example of a flat bone

Answer 7

Sternum

Question 8

What is an example of an irregular bone

Answer 8

Vertebrae

Question 9

Describe osteogenic cells

Answer 9

They form osteoblasts

Question 10

Describe osteoblasts

Answer 10

Young bone cells that form new bone e.g: in growth. Found in the periosteum and endosteum

Question 11

Describe osteocytes

Answer 11

Are mature bone cells found in the lacunae surrounded by matrix

Question 12

Describe osteoclasts

Answer 12

Destroy bone matrix using lysosomes & are involved in bone remodelling, found in the periosteum & endosteum.

Question 13

What is the diaphysis mostly made up of?

Answer 13

Compact bone

Question 14

What type of bone has a honeycomb structure

Answer 14

Spongy bone

Question 15

Organic materials in bones give:

Answer 15

Flexibility & strength

Question 16

Inorganic materials in bones give:

Answer 16

Gives hardness, and becomes brittle

Question 17

The process of bone tissue formation is called?

Answer 17

Ossification

Question 18

Bone remodelling consists of both:

Answer 18

bone deposits & bone reabsorption

Remodelling involves the activity of osteoblasts & osteoclasts

Question 19

What is the function of the parathyroid hormone?

Answer 19

Released in response to low blood calcium levels

Question 20

What is the function of calcitonin?

Answer 20

Released in response to high blood calcium levels

Question 21

What is the mechanical response to stress on bones

Answer 21

Bones are stressed when weight bears or muscle pulls on them.

Question 22

Describe the four stages of fracture repair

Answer 22

1. Blood clotting
2. collagen & condronblasts
3. calcification & osteoblasts form bone callus
4. osteoclasts assist remodelling