Muscle Contraction

Question 1

Sacromere?

Answer 1

Space in between two Z-lines

Question 2

Motor Unit?

Answer 2

Makes/allows muscles to fire

Question 3

1

Answer 3

Signal gets sent down the neuron

Question 4

2

Answer 4

Signal hops in a vesicle and crosses the synaptic cleft and spreads across the sarcolemma; where it reaches the sarcoplasmic reticulum

Question 5

3

Answer 5

Sarcoplasmic reticulum releases Calcium

Question 6

4

Answer 6

Calcium reacts with tropomin and tropomisn exposing myosin binding sites

Question 7

5

Answer 7

Myosin cross-bridgs bind and causes the sacromeres to fire

Question 8

6

Answer 8

Acetylcholiesteraase decomposes the acetylcholine

Question 9

7

Answer 9

Calcium is brought back to the sarcoplasmic reticulum; myosin and actin bonds are broken… arm relaxes

Question 10

Muscle Fatigue?

Answer 10

muscle loses its ability to contract

Question 11

Twitch?

Answer 11

Single/short contraction

Question 12

Latent Period?

Answer 12

Period of relaxation after a contraction

Question 13

Recruitment?

Answer 13

Learning to use more muscle fibers

Question 14

Tone?

Answer 14

Sustained contraction of motor units

Question 15

Slow Twitch?

Answer 15

Not explosive; last a long time

Question 16

Fast Twitch?

Answer 16

Explosive; doesn’t last a long time