11.2 Movement

Question 1

What is the definition of a ‘joint’?

Answer 1

‘movement’ or pivot for movement

Question 2

What is the function of a bone in human movement?

Answer 2

• act as a lever
• structural support

Question 3

What is the function of nerves in movement?

Answer 3

coordinate and stimulate muscle contractions

Question 5

What is the function of muscles in human movement?

Answer 5

apply effort or force

Question 6

What is the function of tendons in human movement?

Answer 6

connects the muscle to the bone

Question 7

What is the function of ligaments in human movement?

Answer 7

Connects the bone to bone

Question 8

Complete this sentence: when the flexor muscle contracts, the _______ ________ ______ and the tibia and femur are brought _______ _________. This retracts the hind quarters in preparation for pushing off the ground.

Answer 8

extensor muscle relaxes, closer together

Question 9

What is the genus of Grasshoppers?

Answer 9

Acrididae

Question 10

Complete this sentence:
The elbow is a ______ joint

Answer 10

hinge

Question 11

What is the definition and an example of antagonistic muscles?

Answer 11

Definition - when one muscle contracts the other relaxes to produce controlled movement in opposite directions.
Example - The triceps and biceps are working in opposite directions and hence are examples of antagonistic muscles.

Question 12

What are myofibril?

Answer 12

Myofibrils are the basic rod-like
contractile units with a muscle
cells. Myofibrils are grouped
together inside muscle cells,
which are known as muscle
fibres.