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Flashcards in Skeletal Bioscience Deck (22)
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1

What does the skeletal system support?

Forms framework of body

2

What does the skeletal system protect?

Brain, spinal cord, heart and lungs

3

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

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

4

Where is fat stored in the skeletal system?

In yellow bone marrow within the epiphysis

5

What is an example of a long bone

Humerous

6

What is an example of a short bone

Talus

7

What is an example of a flat bone

Sternum

8

What is an example of an irregular bone

Vertebrae

9

Describe osteogenic cells

They form osteoblasts

10

Describe osteoblasts

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

11

Describe osteocytes

Are mature bone cells found in the lacunae surrounded by matrix

12

Describe osteoclasts

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

13

What is the diaphysis mostly made up of?

Compact bone

14

What type of bone has a honeycomb structure

Spongy bone

15

Organic materials in bones give:

Flexibility & strength

16

Inorganic materials in bones give:

Gives hardness, and becomes brittle

17

The process of bone tissue formation is called?

Ossification

18

Bone remodelling consists of both:

bone deposits & bone reabsorption
Remodelling involves the activity of osteoblasts & osteoclasts

19

What is the function of the parathyroid hormone?

Released in response to low blood calcium levels

20

What is the function of calcitonin?

Released in response to high blood calcium levels

21

What is the mechanical response to stress on bones

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

22

Describe the four stages of fracture repair

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