GCSE PE 1.2.4 The Muscular System
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Identify the joint action that occurs when the trapezius muscle contracts
Adduction of the shoulder
Identify the joint action that occurs when the biceps contract?
Flexion of the elbow
Identify the joint action that occurs when the Quadriceps contract?
Extension of the knee
Identify the joint action that occurs when the Triceps contract?
Extension of the elbow
Identify the joint action that occurs when the gastrocnemius muscle contract?
Extension of the ankle
Identify the joint action that occurs when the hamstring muscles contract?
Flexion of the knee
Identify the joint action that occurs when the deltoid muscle contract?
Abduction of the shoulder
Identify the joint action that occurs when the gluteus maximus muscle contract?
extension of the hip
Identify the joint action that occurs when the latissimus dorsi contract?
Adduction of the shoulder
Name the 3 classifications of muscles?
What are the names of the 2 muscle fibre types found in skeletal/voluntary muscles?
-Fast twitch muscle fibres
-Slow twitch muscle fibres
Identify the types of activities that will use fast twitch fibres?
-High intensity/explosive events or actions
-Speed events (100m sprint)
-Throwing (shot putt, javelin, discus, cricket)
-Jumping (long jump, triple jump, high jump)
What is the role of the prime mover (agonist) muscle in joint movement?
This muscle contracts
What is the role of the antagonistmuscle in joint movement?
This muscle relaxes to allow the joint movement to happen
Name the 2 types of muscle contractions?
There are 2 types of Isotonic muscle contractions. Describe both:
1) Concentric- this is when a muscles shortens during a contraction.
2) Eccentric- this is when a muscle lengthens during a contraction.
Describe what happens during an isometric muscle contraction?
The muscle stays the same length during a contraction. For example holding a balance in gymnastics
How can an athletes diet affect their muscular system?
Protein in an athletes diet can help to:
- 1) repair damaged tissue
- 2) build muscle mass.
List the immediate (shot term) effects of exercise on muscles:
- -Increased demand for fuel
- -Blood shunted to working muscles
- -Depletion of glycogen stores in muscles
- -Muscle contract and relax
- -Build up of lactic acid
- -Production of heat
What will the long term effects be of a muscular strength training (weight training) program be?
- -Increased muscle hypertrophy
- -Increase in muscular strength
What do you use to treat muscular injuries?
- R- rest
- I- ice
- C- compression
- E- elevation
What would you like to do?
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