Pe Defs

Question 1

Which muscle group acts as a fixator at the shoulder to stabilise the joint during movement

Answer 1

The Rotator cuff

Question 2

Antagonist action

Answer 2

Lengthening and relaxing during this phase

Question 3

Which muscle contracts to increase the capacity of the lungs

Answer 3

Sternocleidomastoid

Contracts to deepen our breathing

Question 4

Which muscle group contacts to cause horizontal flexion during a punch

Answer 4

Pectorals

Question 5

Which muscle group is responsible for flexion at the knee

Answer 5

Hamstrings

Question 6

What movement does the gastrocnemius make

Answer 6

Planter flexion

Question 7

Isotonic concentric contractions

Answer 7

This involves the muscle shortening. The origin and insertion of the muscle move closer together and the muscle becomes fatter (increases in thickness)

Question 8

Isotonic eccentric contraction

Answer 8

This involves the muscle lengthening whilst it is under tension. Works to resist the force of gravity (the origin and the insertion move further away

Question 9

Which structure connects muscle to bone

Answer 9

Tendon