The Physiology of Muscle Contraction - MUSCLE TONE

Question 1

What is the purpose of muscle tone?

Answer 1

Maintains tension on tendons in order to maintain posture

Question 2

Muscle tone purpose is to Keep _________ upright

Answer 2

head

Question 3

Muscle tone purpose is to Keep _________ muscles taunt (back straight, stomach flat)

Answer 3

torso

Question 4

Muscle tone purpose is to Keep _________ muscles taunt

Answer 4

calf

Question 5

Muscle tone purpose is to stabilize _________hold them in position after movement

Answer 5

limbs

Question 6

Isometric =

Answer 6

Same length

Question 7

The muscle doesn’t change in length because…

Answer 7

Actin doesn’t slide

Question 8

However, there is an increase in _____________ because
myosin heads still ___________________________.
(The myosin heads don’t swing or pull on actin after they attach).

Answer 8

Tension

attach to actin

Question 9

Contractions where sliding of actin does occur

are known as

Answer 9

ISOTONIC contractions

Question 10

Isotonic=

Answer 10

Same Tension

Question 11

Contractions where sliding of actin does occur
are known as ISOTONIC contractions.
The muscle doesn’t change in tension but it does change in?

Answer 11

LENGTH

Question 12

What are the Two types of isotonic contractions?

Answer 12

Concentric

Eccentric

Question 13

What is concentric?

Answer 13

Actin slides, muscles shorten ( Like picking up a box)

Question 14

What is eccentric?

Answer 14

Actin slides, muscles lengthens (putting a box back down)