Soc 14 - Muscular System Flashcards

1
Q

What is the funtion of the deltoid?

A

Raise the arm in all directions at the shoulder

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2
Q

Example in sport for deltoid

A

In tennis, when serving you need to raise the racket above your head

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3
Q

What is the funtion of the pectoralis major

A

Adduct the arm at the shoulder

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4
Q

Example of pectoralis major in sport

A

When performing a jab in boxing

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5
Q

What is the funtion of the latissimus dorsi

A

Pull your arms down at the shoulders and behind your back

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6
Q

Example of latissimus dorsi in sport

A

When swimming front crawl, you are pulling your arms as fast as possible at the shoulders and behind the back

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7
Q

What is the funtion of the bicep

A

Flex your arm at the elbow

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8
Q

Example of bicep in sport

A

Uppercut in boxing

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9
Q

What is the funtion of the tricep

A

Extend the arm at the elbow

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10
Q

Example of tricep in sport

A

When taking a throw in when playing football

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11
Q

What is the funtion of the external obliques

A

Pull the chest downwards. Flex and rotate the spinal column

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12
Q

What is an example of external obliques in sport

A

When doing a forward roll or flip in gymnastics

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13
Q

What is the funtion of the gluteals

A

Adduct and extend the leg at the hips, pull the leg backwards

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14
Q

Example of the gluteals in sport

A

Pull your leg backwards to strike through the ball powerfully in football

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15
Q

What is the funtion of the hip flexors

A

Flex the hip, help the leg and knee up towards the body

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16
Q

Example of hip flexor in sport

A

When sprinting in a race driving the knee up toward the body

17
Q

What is the funtion of the quadriceps

A

Extend the leg at the knee

18
Q

What is an example of the quadriceps

A

Football when striking a ball following through the ball

19
Q

What is the funtion of the hamstrings

A

Enable us to flex the legs at the knee

20
Q

Example of hamstring in sport

A

When you need to jump in basketball, you need to flex the legs at the knees

21
Q

What is the funtion of the gastrocnemius

A

Point the toes (planta-flexion) at the ankle

22
Q

Example of gastrocnimius in sport

A

When standing on your toes doing a planta-flexion in ballet

23
Q

What is the funtion of the tibialis anterior

A

Flex the hip, help the leg and the knee up towards the ball

24
Q

Example of tibialis anterior in sport

A

When controlling a football coming in from the air at the toe

25
Q

What is a voluntary muscle

A

Muscles we are in control of, you can choose when to relax or contract them. Usually cylinder shaped fibres and usually long and thin but get shorter and fatter when contracting

26
Q

What are involentury muscles

A

Muscles not in our control, we don’t control when they contract or relax controlled by involuntary nervous system. They can be found in the digestive system

27
Q

What are cardiac muscles

A

Only found in the wall of the heart it is very specialised type of involentury muscle. Cardia muscle is made up of interlaced fibres. These fibres can spread electronical signals from the brain right through the heart

28
Q

What is a slow twitch fibre

A

Suit endurance activities, can work for long periods of time. They are darker in colour because they contain myoglobin, a red pigmant that transports oxygen to the working muscles

29
Q

What is a fast twitch fibre type IIa

A

Used in anaerobic work which can be improved through endurance training. Increase their resistance to fatigue

30
Q

What is fast twitch fibre type IIx

A

Used in anaerobic work that can generate more power that other muscle fibres fatigue quickly. Suits speed events and are lighter in colour because they don’t use oxygen for energy