Joint Actions

Question 1

What joint action happens when a joint decreases the angle between two bones?

Answer 1

Flexion

Question 2

Describe the joint action of extension

Answer 2

It is the straightening movement that increases the angle between two bones

Question 3

Describe the joint actions of abduction and adduction

Answer 3

Abduction: the movement of a limb away from the midline of the body
Adduction: moving a limb back towards the midline (think of adding a limb to the body)

Question 4

What is supination?

Answer 4

The rotation of the forearm so that palms move from posterior to anterior (think of holding soup)

Question 5

What is the action of pronation?

Answer 5

The rotation of the forearm so that the palms move from anterior to posterior, resulting in palms facing backward

Question 6

What does the foot movement inversion mean?

Answer 6

Turning sole of foot towards midline of the body

Question 7

What does the foot action eversion mean?

Answer 7

Turning sole away from midline of body

Question 8

What does Dorsi flexion mean?

Answer 8

Movement of ankle where we move the ball of our foot off the ground (lifting toes upwards)

Question 9

What is planter flexion?

Answer 9

Ankle joint movement where we plant our foot firmly on the ground (rising up onto your toes)

Question 10

What is lateral flexion?

Answer 10

Lateral movement of the trunk (think of a side bend exercise)

Question 11

What is internal rotation?

Answer 11

Rotating body segment towards middle of body