Muscles 3

Question 1

Tension of the muscle as a whole is determined by

Answer 1

1. the tension produced by the individual muscle fibers
2. the total number of muscle fibers stimulated

Question 2

Control of tension across the whole muscle amount to ________?

Answer 2

controlling the number of muscle fibers stimulated and the frequency at which they are stimulated

Question 3

At the molecular level, muscle tension depends on _______?

Answer 3

the number of pivoting cross bridges in the sarcomere

Question 4

Muscles are organized as __________?

Answer 4

Motor units

Question 5

What is the relationship between motor units and muscle control

Answer 5

the bigger the motor unit, the more precise control you have over a muscle

Question 6

What is a Fasciculation

Answer 6

the involved activation of multiple motor units

Question 7

What is benign fasciculation syndrome

Answer 7

Uncontrolled twitching

Question 8

Peak tension is reached when _________?

Answer 8

All motor units are activated

Question 9

What is asynchronous motor unit summation

Answer 9

When the motor units cycle between active and resting states

Question 10

What is recruitment

Answer 10

When smaller motor units are activated first in the activation of a muscle

Question 11

What is muscle tone

Answer 11

When the muscle fibers are always under tension

Question 12

What is the function of muscle tone

Answer 12

stabilizes positions of bones and organs
maintains balance and posture

Question 13

What is the purpose of a tension cycle

Answer 13

to allow time for precise muscle relaxation

Question 14

Higher muscle tone leads to ______?

Answer 14

higher muscle metabolism : the major effect of exercise

Question 15

What is Bell’s palsy

Answer 15

Sudden loss of facial muscle tone

Question 16

Sarcomere tension depends on _______?

Answer 16

the length-tension relationship