Soc14: Muscle System Flashcards

1
Q

What are the 3 different muscle groups?

A

Voluntary
Involuntary
Cardiac

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2
Q

What is a voluntary muscle?

A

Under your control, you choose when to contract or relax them

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3
Q

What is your Deltoid?

A

Abducts upper arm at the shoulder

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4
Q

What are your Pectorals?

A

Adduction of upper arm at the shoulder

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5
Q

What are your Triceps?

A

Extends lower arm at the elbow

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6
Q

What are your biceps?

A

Flexes arm at the elbow

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7
Q

What are your Lattisimus Dorsi?

A

Adducts and roates the humerus at the shoulder (draws the arm back and in towards the body)

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8
Q

What are your External Obliques?

A

Laterally flex and roate the spine

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9
Q

What are your Gluteus Maximus?

A

Extends the leg at the hip

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10
Q

What are your Hip Flexors?

A

Flexes the leg at the hip

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11
Q

Muscle fibers?

A

Make up voluntary (skeletal) muscle; divided into type I, type IIa and type IIx

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12
Q

Type I?

A

Slow twitch; suited to low intensity, e.g marathon running, as they can be used for a long period without fatiguing

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13
Q

Type IIa?

A

Fast twitch; used in anaerobic work can be improved through endurance training to increase their resistance to fatigue

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14
Q

Type IIx?

A

Fast twitch; used in anaerobic work and can generate much greater force than other fibre types, but fatigue quick

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15
Q

Myoglobin?

A

A red pigment that transports oxygen to muscles

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