The Skeletal System

Question 1

bone functions:

Answer 1

1, movement levers
2, primary storage site for minerals (Ca, P)
3, location for blood cell info
4, serve to protect internal organs

Question 2

typical person has … bones

Answer 2

206

Question 3

axial skeleton - 
function -

Answer 3

skull, vertebral column, sternum, ribs;

- protect important internal organs (brain, heart, lungs) and offer sites for the skeletal muscle attachments

Question 4

appendicular skeleton - 
function -

Answer 4

• upper and lower limbs;
• rotation of these bones around joints responsible for the movements associated with the exercise (lifting, running, throwing, kicking, striking)

Question 5

general bone characteristics :

Answer 5

• complex, living dynamic tissue

Question 6

2 types of bones

Answer 6

1) cortical/ compact

2) cancellous/trabecular

Question 7

cortical bone -

Answer 7

hard, dense found in outer layer of long bones in arms and legs

Question 8

cancellous bone/spongy -

Answer 8

• less dense found in the interior area of the long bone (vertebrae and head of the femur)
• site of the hematopoiesis (blood cell formation)

Question 9

2 minerals that help form the body’s bones

Answer 9

calcium and phosphorus

Question 10

osteoporosis

Answer 10

‘porous bones’, condition when bones are weak and brittle; susceptible to breaking especially in spine and hip

Question 11

Wolff’s law

Answer 11

‘bone adapts to exercise by increasing in mass and strength. response to stresses placed on it’

Question 12

exercise to increase bone mineral density

Answer 12

weight-bearing running, walking, resistance training especially eccentric loading.

Question 13

tendons are formed from..

Answer 13

inelastic protein collagen

Question 14

ligaments are formed from..

Answer 14

collagen and elastic protein elastin which allows bones to stretch and stabilise the joint why giving it some mobility.