Muscular system

Question 1

What are the three functions of the muscular system?

Answer 1

1. Movement
2. Posture
3. Body heat

Question 2

What are the three types of muscles with an example?

Answer 2

1. Skeletal muscles: biceps
2. Smooth muscles: digestive system
3. Cardiac muscle: heart

Question 3

What are the 3 types of muscle contraction?

Answer 3

Isotonic: concentric - shortening
eccentric- lengthening
Isometric
Isokenetic

Question 4

What is isotonic contractions with an example?

Answer 4

When muscle length changes
- Concentric: muscle length shortens
- Eccentric: muscles lengthen
Picking up a shot put and brining to face

Question 5

Describe Isokenetic with an example

Answer 5

Tension is maximal throughout the entire range of motion e.g kicking a footy

Question 6

Describe isometric with an example

Answer 6

Muscle contracts but no movement is produced.
Putting tension on something but no shortening or lengthening occurs
E.g pushing on a wall

Question 7

What are the two types of muscle fibres?

Answer 7

1. Slow twitch fibres

2. Fast twitch fibres

Question 8

What are 4 characteristics of fast twitch fibres?

Answer 8

• White
• Contract rapidly - shorter period of time
• Best suited to anerobic and high intensity activities.
  Exerts great force in bursts of power and speed.

Question 9

What are 4 characteristics of slow twitch fibres?

Answer 9

• Red
• Contract slowly
• Best suited to aerobic and endurance activities
• Exerts less force and contracts repeatedly