Soc 14

Question 1

What are Voluntary muscles

Answer 1

Voluntary muscles are under your control, you can choose when to contract or relax them. All these muscles are attached to the skelleton via tendons. When your muscle contract movement takes place.

Question 2

What are Involuntary muscles

Answer 2

Involuntary muscles are not under our control. They contract and relax automatically. Controlled by involuntary nervous system. They can be found in the digestive, organs, circulatory and uniary systems.

Question 3

What are Cardiac muscle

Answer 3

Only found in the wall of the heart it is a very specialised type of involuntary muscle. Cardiac muscle is made up of interlaced fibers. These fibres can spread electronical signals from the brain right through tonthe heart so the cells can contract together.

Question 4

Muscle fibres - Slow Twitch (Type 1)

Answer 4

• Suits endurance activites - can work for long periods of time
• They are darker in colour because they contain Myoglobin

Question 5

Muscle fibres - Fast twitch (type 2)

Answer 5

Fast twitch (type 2)
- Type 2a - used in anaerobic work can be improved through endurance training. Increase their resistance to fatigue
- Type 2x - used in anaerobic work that can generate more power that other muscle fibres but fatigue quickly
- Suits speed events such as sprinting and jumping and are lighter in colour because they dont use oxygen for energy

Question 6

How the skeletal and muscular systems work together

Answer 6

The muscular system is made of more than 600 muscles, including involuntary muscles (heart) and the smooth muscles of the internal organs. All muscles are connected to the nervous system, which allows movement to start through signals from the brain.

Question 7

What is Myoglobin

Answer 7

A red pigment that transports oxygen to the muscles

Question 8

Where are the Gluteals located

Answer 8

In the middle of the body at the back, forming the bottom.

Question 9

Where are the hamstrings located

Answer 9

At the top of each leg at the back.

Question 10

Where is the gastrocnemus located

Answer 10

At the bottom of each leg at the back. Also known as the calf muscles.

Question 11

Function of gluteals

Answer 11

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

Question 12

Function of hamstrings

Answer 12

Flex the legs at the knees.

Question 13

Function of gastrocnemus

Answer 13

Point the toes (planta-flexion) at the ankle.

Question 14

Where is the latimuss dorsi located

Answer 14

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

Question 15

Where are the triceps located

Answer 15

At the top of each arm at the back

Question 16

Function of latimuss dorsi

Answer 16

Pull your arms down at the shoulders and behind your back (adduct and extend).

Question 17

Function of triceps

Answer 17

Extend the arm at the elbow.

Question 18

Where are the deltoids located

Answer 18

In the upper part of the body, covering the shoulders.

Question 19

Where are the biceps located

Answer 19

At the top of each arm at the front.

Question 20

Where are the quadriceps located

Answer 20

At the top of each leg at the front.

Question 21

Function of deltoids

Answer 21

Raise the arms in all directions at the shoulders.

Question 22

Function of biceps

Answer 22

Flex the arm at the elbows.

Question 23

Function of quadriceps

Answer 23

Extend the leg at the knee.

Question 24

Location of Pectoralis major

Answer 24

In the upper part of the chest at the front.

Question 25

Location of External obliques

Answer 25

To the side of the abdomen.

Question 26

Location of Tibialis anterior

Answer 26

Runs down the shin.

Question 27

Location of hip flexors

Answer 27

Sit deep in the front of the hip and connect the leg .

Question 28

Function of pectoralis major

Answer 28

Adduct the arm at the shoulder.

Question 29

Function of external obliques

Answer 29

Pull the chest downwards. Flex and rotate the spinal column.

Question 30

Function of tibialis anterior

Answer 30

Pull the toes up towards the shin (dorsi-flexion).

Question 31

Function of hip flexors

Answer 31

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