Skeletal Muscles Structure

Question 1

also known as the ‘prime mover’; contracts most to bring about the desired movement

Name the role of this muscle in contraction

Answer 1

Agonist

Question 2

the muscle on the opposite side of the body or joint that allows for movement of the agonist by downgrading the amount of activity it provides.

Name the role of this muscle in contraction

Answer 2

Antagonist

Question 3

assist with the movement. They help the agonist to perform the desired movement

Name the role of this muscle in contraction

Answer 3

Synergist

Question 4

contracts to make the moving joint stable. These muscles help to keep the other parts of the body stationary.

Name the role of this muscle in contraction

Answer 4

Fixator

Question 5

Name four patterns of fascicle organisation

Answer 5

• parallel muscles
• convergent muscles
• pennate muscles
• circular muscles

Question 6

Muscle fibres in a skeletal muscle form bundles called ?

Answer 6

Fascicles

Question 7

fascicles are parallel to the long axis of the muscle

Name this pattern of fascicles organisation

Answer 7

Parallel/Fusiform Muscles

Question 8

the muscle fibres are spread over a broad area, but all the fibres converge at one common attachment site

Name this pattern of fascicles organisation

Answer 8

Convergent Muscles

Question 9

the fascicles form a common angle with the tendon. Because the muscle cells pull at an angle, contracting pennate muscles do not move their tendons as far as parallel muscles do

Name this pattern of fascicles organisation

Answer 9

Unipennate Muscles

Question 10

pennate muscle which has fibres on both sides of the tendon

Name this pattern of fascicles organisation

Answer 10

Bipennate Muscles

Question 11

multiple rows of diagonal fibres, with a central tendon which branches into two or more tendons.

Name this pattern of fascicles organisation

Answer 11

Bipennate Muscles