Soc 14 Musclar System

Question 1

Gluteals location and function

Answer 1

In the middle of the body at the back, forming the bottom. Adduct and extend the leg at the hips, pull leg backwards.

Question 2

Hamstrings location and function

Answer 2

At the top of each leg at the back. Flex the legs at the knees

Question 3

Gastrocnemius location and function

Answer 3

At the bottom of each leg at the badk. Also known as the calf muscle. Point the toes (planta-flexion) at the ankle.

Question 4

Latissimus Dorsi location and function

Answer 4

At the back of the body, either side of the chest. Pull your arms down at the shouldes and behind your back (adduct and extend)

Question 5

Triceps location and function

Answer 5

At the top of each arm at the back. Extend the arm at the elbow

Question 6

Deltoids location and function

Answer 6

In the upper part of the body, covering the shoulders. Raise the arm in all directions at the shoulders.

Question 7

Biceps location and function

Answer 7

At the top of each arm at the front. Flex the arm at the elbows

Question 8

Quadriceps location and function

Answer 8

At the top of each leg at the front. Extend the leg at the knee.

Question 9

Pectoralis major location and function

Answer 9

In the upper part of the chest at the front. Adduct the arm at the shoulders

Question 10

External obliques

Answer 10

To the side of the abdomen. Pull the chest downwards. Flex and rotate the spinal column

Question 11

Triblis anterior location and function

Answer 11

Runs down the shin. Pull the toes up towards the shin (dorsi flexion)

Question 12

Hip flexors location and function

Answer 12

Sit deep in the fromt of the hip and connect the leg. Flex the hip, help the leg and knee up toward the body

Question 13

What is a antagonistic pair?

Answer 13

Muscles that work together to create a movement. When a muscle contacts and pulls a bine, it can produce movement in one direction.
When one muscle contracts (agonist) the other relaxes (antagonist) to allow the joint to work

Question 14

Slow twich type I fibres

Answer 14

Slow twitch (type l)
- Suit endurance activities - can work for long periods of time.
- They’re darker in colour because they contain Myoglobin, a red pigment that transports oxygen to the working muscles.

Question 15

Fast twitch type II fibres

Answer 15

Fast twitch (type Il) - can be broken down into two further types:
- Type Ila - used in anaerobic work which can be improved through high intensity interval training.
Increasing their resistance to fatigue.
- Type Ilx - used in highly explosive anaerobic work that can generate more power than other muscle fibres but fatigue very quickly.
- Suit speed events, such as sprinting or jumping (type Ila and type Ilx) are lighter in colour because they don’t use oxygen for energy.

Question 16

What are muscle fibres?

Answer 16

Voluntary muslces made up of bundles of individual fibres. Each fibre contains many muofibrils, which are strands that can grab onto each other and pull to make the muscle contract.

Question 17

What is myogoblin?

Answer 17

A red pigment that transporte oxygen to the working muscles

Question 18

Voluntary muscles

Answer 18

Under your conteol, all muscles attched to skelton. Muscles contraft movement takes place. Made up of cylinder shaped fibres, long and thin