1.4 - The Musculoskeletal System and Analysis of Movement In Physical Activities

Question 1

Define articulating?

Answer 1

This refers to the bones that meet and move at the joint.

Question 2

Define a sagittal plane?

Answer 2

Divides the body into right and left halves.

Question 3

Define a frontal plane?

Answer 3

Divides the body into front and back halves.

Question 4

Define a transverse plane?

Answer 4

Divides the body into upper and lower halves.

Question 5

Define a transverse axis?

Answer 5

Runs from side to side across the body.

Question 6

Define a sagittal axis?

Answer 6

Runs from front to back.

Question 7

Define a longitudinal axis?

Answer 7

Runs from top to bottom.

Question 8

Define flexion?

Answer 8

Decreasing the angle between the bones of a joint.

Question 9

Define extension?

Answer 9

Increasing the angle between the bones of a joint.

Question 10

Define planter flexion?

Answer 10

Pointing the toes/pushing up onto your toes.

Question 11

Define Dorsi flexion?

Answer 11

Pulling the toes up to the shin

Question 12

Define hyper extension?

Answer 12

Increasing the angle beyond 180° between the bones of a joint.

Question 13

Define agonist?

Answer 13

The muscle that is responsible for the movement that is occurring.

Question 14

Define antagonist?

Answer 14

The muscle that works in opposition to the agonist (to help produce a coordinated movement)

Question 15

Define a concentric contraction?

Answer 15

When a muscle shortens under tension.

Question 16

Define a eccentric contraction?

Answer 16

When a muscle lengthens under tension or perform the negative work and acts like a break.

Question 17

Define a isometric contraction?

Answer 17

When a muscle is under tension but there is no visible movement.