Muscualr System

Question 1

What are the main jobs of the muscular system?

Answer 1

The muscular system is driving forces behind movement which happens as a result of muscles contracting and lengthening.

Question 2

Define voluntary muscles

Answer 2

Voluntary muscles bring about movement. These are the muscles which can be consciously controlled and can be trained to be stronger

Question 3

How do muscles create movement?

Answer 3

Muscles are attached to the bones of the skeleton by tendons. Each muscle is made up of muscle fibres and when these contract or pull against the skeleton movement takes place

Question 4

What is meant by the term antagonistic pairs?

Answer 4

Muscles are arranged in antagonistic pairs so when one muscle contracts and pulls the other one relaxes to allow the joint to work

Question 5

What are the 11 muscles

Answer 5

Deltoid - shoulder muscles
Trapezius - upper back muscles
Latissimus dorsi - lower back muscles 
Pectorals - front chest muscles
Abdominals - stomach muscles
Biceps - front of arm muscles
Triceps - back of arm muscles 
Gluteal - bottoms muscles 
Quadriceps - front of leg muscles
Hamstrings - back of leg muscles
Gastrocnemius - calf muscles

Question 6

What are isometric and isotonic contractions ?

Answer 6

Isometric contractions are muscle contractions which results in increased tension but the length of the muscle stays the same e.g. A wall sit

Isotonic contractions are muscle contraction which result in limb movement

Question 7

What are the long term benefits of the muscular system resulting in regular exercise ?

Answer 7

Muscle hypertrophy - the increase in muscle mass
Increase in muscle strength
Increase in muscular endurance

Question 8

What potential injuries are there to the muscular system?

Answer 8

Soft tissue injuries to muscles - include tears pulls and strains.

Muscle atrophy - when strengths training is stopped , - loss of muscle mass and strength can occur .

Question 9

What is meant by the acronym RICE?

Answer 9

Rest - a period of time to allow the injury to recover
Ice - this directs cold to the injured tissue and can relief pain
Compression / helps limit and reduce swelling of the injury
Elevation - reduce swelling by elevating injured part of the body above the level of the heart