Chapter 1.4 (The Musculoskeletal System)

Question 1

Define Articulating

Answer 1

Refers to the bones that meet and move at the joint

Question 2

What is the sagittal plane?

Answer 2

Divides the body into left and right halves

Question 3

What is the frontal plane?

Answer 3

Divides the body into front and back halves

Question 4

What is the transverse plane?

Answer 4

Divides the body into upper and lower halves

Question 5

What is the transverse axis?

Answer 5

Runs from side to side across body

Question 6

What is the sagittal axis?

Answer 6

Runs from front to back

Question 7

What is the 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 plantar-flexion

Answer 10

Pointing the toes/ pushing up on to your toes

Question 11

Define dorsi-flexion

Answer 11

Pulling the toes up to the shin

Question 12

Define hyper-flexion

Answer 12

Increasing the angle beyond 180 degrees between eh 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

Question 15

Concentric contraction

Answer 15

When a muscle shortens under tension

Question 16

Eccentric contraction

Answer 16

When a muscle lengthens under tension or performs negative work and acts like a brake

Question 17

Isometric contraction

Answer 17

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