Muscles

Question 1

How many muscles are in the human body ?

Answer 1

640

Question 2

What links muscles to the bone/ skeleton?

Answer 2

Tendons

Question 3

What are the three types of muscle ?

Answer 3

Skeletal muscle
Cardiac muscle
Smooth muscle

Question 4

Features of skeletal muscles

Answer 4

Under conscious control
Fatigued by lactic acid

Question 5

Features of cardiac muscles

Answer 5

Found in the walls of the heart
Involuntary
Work continuously and tirelessly
Not fatigued
blood supplied to heart by coronary arteries

Question 6

Features of smooth muscles

Answer 6

Involuntary
Found in the walls of the digestive system and blood vessels
Helps to regulate digestion
Helps to regulate blood pressure

Question 7

Quadriceps are made up of four muscles which are ?

Answer 7

Rectus femoris
Vastus medialis
Vastus intermedius
Vastus lateralis

Question 8

The hamstring is made up of three muscles which are?

Answer 8

Bicep femoris
Semi tendinosus
Semi memberosous

Question 9

Muscles found at the shoulder

Answer 9

Deltoid
Pectorals
Trapezius
Latissimus Doris

Question 10

Muscles found at the elbow

Answer 10

Bicep
Tricep

Question 11

Muscles found at the spine/ abdomen

Answer 11

Obliques
Erector spinae group

Question 12

Muscles found at the wrist/ lower arm

Answer 12

Wrist flexor
Wrist extensor
Pronators
Supinators

Question 13

Muscles found at the hip

Answer 13

Hip flexors
Gluteals

Question 14

Muscles found at the knee

Answer 14

Hamstrings
Quadriceps

Question 15

Muscles found at the ankle

Answer 15

Gastrocnemius
Soleus
Tibialis anterior

Question 16

Skeletal muscles use in sport

Answer 16

Help provide movement generate force necessary
Posture and stability core muscles such as abdominals

Question 17

Cardiac muscles use in sport

Answer 17

Allows the heart to pump blood delivering oxygen and nutrients to muscles and also organs in the body

Increase heart rate and stroke volume

Question 18

Smooth muscles use in sport

Answer 18

Regulated blood flow lines the blood vessels

Controls the movement of foot and the absorption of nutrients

Question 19

Fixator muscle

Answer 19

Stops any unwanted movement
Contracts to keep joint stable

Stabilised origin to ensure the agonist has something solid to pull against
These muscles perform sometric contractions

Question 20

Synergist muscle

Answer 20

Works with the agonist to help the movement control and direction of the pull/ moment

Question 21

When do skeletal muscles contract ?

Answer 21

When a nerve impulse is sent to the muscle.

Question 22

What does an agonist muscle do?

Answer 22

Shortens under tension to produce movement this muscle contracts.

Question 23

What does the Antagonist muscle

Answer 23

This muscle lengthens to allow the agonist muscle to produce the movement this muscle usually relaxes

Question 24

Isotonic muscle contraction

Answer 24

Muscle contacts and movement can be seen

Occur when the muscle shortens and always happens in the agonist muscles

Question 25

Eccentric muscle contraction

Answer 25

Seen in the downwards phase of a movement Muscle contracts and lengthens

Question 26

Concentric contractions

Answer 26

Muscle contracts and shortens

Question 27

Isometric muscle contraction

Answer 27

There is no movement and a position is held such as a wall sit or a plank

Question 28

All or nothing law

Answer 28

Within a motor unit all muscle fibres contracts or none of them do. Muscle fibres within the unit all contract maximally.

Question 29

To lift a heavier weight you have to

Answer 29

Recruit more motor units

Question 30

Six acute ( immediate) muscular responses to a single exercise session

Answer 30

Increase blood supply to muscles Increased temperature Increased pliability Micro tears Increased lactic acid DOMS

Question 31

Why do muscles need more blood when we exercise?

Answer 31

To produce energy they use this energy to contract.

Question 32

Flip rule

Answer 32

If a weight is involved the agonist flips Example bicep curl: bicep is the agonist in the upwards and downwards phase.

Question 33

Why do our muscles get hot when we exercise?

Answer 33

When muscles respire they produce heat.

Question 34

Response to a single high intensity resistance exercise session.

Answer 34

Lactic acid DOMS micro tears

Question 35

Response of the muscles to a single exercise session/ warm up

Answer 35

Increased blood flow Increased temperature Increased muscle pliability