Soc14: Muscle System

Question 1

What are the 3 different muscle groups?

Answer 1

Voluntary
Involuntary
Cardiac

Question 2

What is a voluntary muscle?

Answer 2

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

Question 3

What is your Deltoid?

Answer 3

Abducts upper arm at the shoulder

Question 4

What are your Pectorals?

Answer 4

Adduction of upper arm at the shoulder

Question 5

What are your Triceps?

Answer 5

Extends lower arm at the elbow

Question 6

What are your biceps?

Answer 6

Flexes arm at the elbow

Question 7

What are your Lattisimus Dorsi?

Answer 7

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

Question 8

What are your External Obliques?

Answer 8

Laterally flex and roate the spine

Question 9

What are your Gluteus Maximus?

Answer 9

Extends the leg at the hip

Question 10

What are your Hip Flexors?

Answer 10

Flexes the leg at the hip

Question 11

Muscle fibers?

Answer 11

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

Question 12

Type I?

Answer 12

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

Question 13

Type IIa?

Answer 13

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

Question 14

Type IIx?

Answer 14

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

Question 15

Myoglobin?

Answer 15

A red pigment that transports oxygen to muscles