Skeletal Lesson 2• How much did you

learn last week?• Different types and

examples of Joints• The effect of exercise

on the skeletal system

Starter Test Name the 3 Main Functions of the

skeleton? Give examples.

Name the 5 different types of movement and give a description

Task 1- independent research Read the text on joints, highlighting key

words to complete the table.

Type of Joint Example on Body

Movement Possible

The effects of exercise on the bones:Positives Increase in Bone Density (heavier and stronger) Ligaments (which attach bone to bone) and

tendons (which attach bone to muscle) become thicker and stronger. This increases joint flexibility and allows more power in movement.

Negatives: Too much exercise on hard ground can cause stress

factures Young people should be careful not to do too much

of activities such as weight lifting or cross country as it can cause bones (which are still growing) to develop unevenly.

The effects of exercise on the body:Positives:

Negatives:

The importance of weight-bearing exerciseAs we age, our bone strength and density are gradually reduced. If bones weaken too much, they could be at risk of breaking easily. This is called Osteoporosis.

Exercise strengthens bones and prevents osteoporosis.

Weight bearing exercise: walking, running, tennis, weight lifting, basketball, etcNone weight bearing exercise: swimming & cycling

The effects of exercise on the body: Osteoporosis:

Weight-Bearing Exercises (prevent osteoporosis):

None Weight Bearing Exercises:

The effects of Diet on the skeletal systemhttp://www.youtube.com/watch?v=waTOl1Orkt8

CALCIUM!!!!! – helps bones grow and increases density

Sources: milk, cheese, yoghurt Vitamin D – bone growth, healthy bones and

absorption of calciumSource: sunlight

Smoking and too much alcohol have a toxic effect on bones by making them more brittle

The Effect of diet on the skeletal system: Calcium:

Vitamin D:

Alcohol & Smoking:

Starter When a bone at a joint is forced out of its

normal position from a hard blow. Break only part way across the bone Overuse injuries usually in weight bearing

areas such as lower leg Overuse injury to the tendons at the

elbow joint common in racket sports A damaged ligament, caused by

stretching a joint beyond its normal limit.