Skeletal system

Question 1

what are 3 functions of the skeletal system?

Answer 1

Support - provides a frame and enables balance
protection - skull protects brain
ribs protect lungs
Movement- where the bones join there is a joint - allows us to increase force & speed

Question 2

Name 2 hinge joints and the movements?

Answer 2

knee and elbow

flexion and extension

Question 3

what are 2 ball and socket joints and what are the movements?

Answer 3

rotation, adduction, abduction,flexion & extension

Question 4

Describe the 5 range of movements at the joints?

Answer 4

flexion - angle at joint decreases
extension- angle at the joint increases
abduction- movement of the limb AWAY from the body
adduction- movement of limb TOWARDS body
rotation- bone at joint moves around its own axis in a circular motion

Question 5

what are the benefits of weight bearing exercises and what are they?

Answer 5

reduced chance of osteoporosis
better posture
increase in synovial fluid- aids flexibility

exercise forcing you to work against gravity
e.g. walking and jogging

Question 6

how can bone density be improved with diet?

Answer 6

minerals - calcium - milk green vegetables

Vitamin D - helps body absorb calcium