A&P- Musculo-skeletal system definitions

Question 1

Define Abduction

Answer 1

The movement of a limb away from the midline of the body

Question 2

Define Adduction

Answer 2

The movement of a limb towards the midline of the body

Question 3

Define Flexion

Answer 3

Decreasing the angle at a joint

Question 4

Define Extension

Answer 4

Increasing the angle at a joint

Question 5

Define Dorsi flexion

Answer 5

Decreasing the angle at the ankle joint

Question 6

Define Plantar flexion

Answer 6

Increasing the angle at the ankle joint

Question 7

Define Horizontal abduction

Answer 7

Movement of a limb away from the midline of the body while held parallel to the ground

Question 8

Define Horizontal adduction

Answer 8

Movement of a limb towards the midline of the body while held parallel to the ground

Question 9

Define Hyperextension

Answer 9

Increasing the angle at a joint beyond 180 degrees

Question 10

Define Agonist

Answer 10

The muscle responsible for the movement which is occuring

Question 11

Define Antagonist

Answer 11

The muscle working in opposition to the agonist to help produce a smooth movement

Question 12

Define Articulating bones

Answer 12

Where two or more bones meet to allow movement at a joint

Question 13

Define Plane

Answer 13

Imaginary lines depicting the direction of movement.
There are 3 types:
*sagittal plane
*transverse plane
*frontal plane

Question 14

Define Axis

Answer 14

An imaginary line through the body around which it rotates.
There are 3 types:
*transverse axis
*longitudinal axis
*sagittal axis

Question 15

Define Isometric contraction

Answer 15

The muscle contracts but no movement occurs

Question 16

Define Isotonic concentric contraction

Answer 16

The muscle contracts and shortens to produce movement

Question 17

Define Isotonic eccentric contraction

Answer 17

The muscle contracts and lengthens to produce movement