Muscles

Question 1

Muscles makes up roughly how much of a persons body weight?

Answer 1

1/2 a persons body

Question 2

What are the 4 major functions of the muscles

Answer 2

1. Energize (heat) the body
2. Protect internal organs
3. Generate movement
4. Maintain posture

Main function = movement

2nd function = the maintenance of posture and body position

Question 3

Muscles are

Answer 3

Groups of cells in bundles that have the ability to generate tension, lengthen, contract and relax

Question 4

Origin

Answer 4

Primarily at the point which is stabilizing bone where the muscle attaches

Proximal

Question 5

Insertion

Answer 5

Primarily at the point on the bone which is moved by the action of the muscle

Distal

Question 6

Agonist

Answer 6

Working (or contracting) muscle

Aka prime mover

They create a normal range of movement in a joint by contracting.

Question 7

Antagonist

Answer 7

Relaxing or lengthening muscle

The muscles act in opposition to the movement generated & are responsible for returning a limb to its initial position

Question 8

Synergists

Answer 8

These muscles perform, or assist in performing, the same set of joint motion as the agonists.

Sometimes referred to as neutralizers or fixatives because they help cancel out or neutralize extra motion from the agonists to make sure that the force generated works within the desired plane of motion

Question 9

3 types of muscle contractions

Answer 9

Isometric
Concentric
Eccentric

The movement in and out of poses is a combination of these three actions

Question 10

Concentric

Answer 10

When you move against gravity

The muscle shortens

Question 11

Eccentric

Answer 11

When your muscles resist gravity in movement, they’re contracting eccentrically

The muscle lengthens

Question 12

Isometric

Answer 12

Holding a yoga pose

Muscle is engaged and holding