Soc 14 - Muscular System

Question 1

What muscle moves the arm in all directions?

Answer 1

The deltoid

Question 2

Which muscle covers the chest?

Answer 2

Pectoralis major

Question 3

What muscle abducts and extends the arm at the shoulder?

Answer 3

The latissimus dorsi

Question 4

Which two muscles make up your arm?

Answer 4

Bicep and tricep

Question 5

Which muscle is beside the abdomen which runs from the lower half of the ribs to the pelvis?

Answer 5

External obliques

Question 6

Which muscle forms the buttocks?

Answer 6

The gluteals

Question 7

Which muscle moves the leg and knee towards the body?

Answer 7

Hip flexors

Question 8

Which muscles extend the leg at the knee?

Answer 8

Quadracepts

Question 9

Which muscle flexes the leg at the knee?

Answer 9

Hamstring

Question 10

Which muscle performs plantar flexion?

Answer 10

Gastrocnemius

Question 11

Which muscle runs down the shin?

Answer 11

Tibialis anterior

Question 12

What is a fulcrum?

Answer 12

The point around which the lever rotates

Question 13

What is articulation?

Answer 13

The state of having a joint; being a jount

Question 14

What is it to articulate?

Answer 14

Act as a joint

Question 15

What are muscle fibres?

Answer 15

Make up voluntary muscles; they are divided into type 1, type 2a and 2x

Question 16

What are type 1 muscle fibres?

Answer 16

Slow twitch fibres suited to low intensity work. They can go a long time without fatiguing

Question 17

What are type 2a muscle fibres?

Answer 17

Fast twitch muscle fibres used in anaerobic work. They can be improved by endurance work to help deal with fatigue

Question 18

What are type 2x muscle fibres?

Answer 18

Fast twitch muscle fibres used in anaerobic work and can generate much grater force than other fibres, however they fatigue quickly

Question 19

What is myoglobin?

Answer 19

A red pigment that transports oxygen to the muscles