Muscles

Question 1

Do muscles pull or push

Answer 1

always pull

Question 2

How does a skeletal muscle create movement

Answer 2

it goes over a joint and contracts to move one bone while keeping the other one stable

Question 3

what two types of twitch are in muscle fibres and what are they good for

Answer 3

fast twitch for power/sprint low oxygen

slow twitch for endurance - more oxygen

Question 4

4 types of muscle movement

Answer 4

concentric
eccentric
isometric
iskeinetic

Question 5

Describe concentric contraction

Answer 5

All lifting
muscle shortens
eg flexing biceps

Question 6

describe eccentric contraction

Answer 6

opposite to concentric
called extension
eg using the triceps to straighten arm after biceps curl
great way to build strength on downward/straightening phase

Question 7

isometric contraction

Answer 7

tension but no movement

e.g. plank

Question 8

isokinetic contraction

Answer 8

movement with consistent resistance e.g swim stroke

Question 9

increase of muscle size is called

Answer 9

hypertrophy

Question 10

decrease in muscle size is called

Answer 10

atrophy