The Muscular System

Question 1

The 12 voluntary muscles

Answer 1

Deltoid
Pectoralis major
Latissimus dorsi
Biceps
Triceps
External obliques
Gluteals
Hip flexors
Quadriceps
Hamstrings
Gastrocnemius
Tibialis anterior

Question 2

Latissimus dorsi

Answer 2

At the back of the body, either side of the chest

Question 3

Triceps

Answer 3

At the back of each arm at the back.

Question 4

Gluteals

Answer 4

In the middle of the body at the back for,ing the bottom

Question 5

Voluntary muscles

Answer 5

Voluntary muscles are under your control, you can choose to contract or relax them.

Question 6

Involuntary muscles

Answer 6

Involuntary muscles are not under our control. They contract and relax automatically controlled by the involuntary nervous system

Heart, internal organs

Question 7

Cardiac muscle

Answer 7

Only found in the wall of the heart; it is a very specialised thpe of involuntary muscle. Cardiac muscle is made up of interlaced muscle

Question 8

Antagonistic

Answer 8

The muscle that relaxes to allow the joint to,work

Question 9

Agonist

Answer 9

The muscle that contracts to allow the joint to work

Question 10

The 3 antagonistic pairs

Answer 10

Biceps and triceps

Quadriceps and hamstrings

Gastrocnemius and Tibialis anterior

Question 11

Slow twitch fibres (type 1)

Answer 11

Dark in colour because of myoglobin and have good O2 supply

Question 12

Fast twitch fibres (type 2A)

Answer 12

Lighter in colour because they don’t use O2 to make energy

manufacture and split ATP at a fast rate using aerobic and anaerobic metabolism; producing fast, strong muscle contraction.

More prone to fatigue than