Muscle Tissue

Question 1

Are the cardiac and smooth muscles under conscious control?

Answer 1

Involuntary control

Question 2

Are the skeletal muscles under conscious control?

Answer 2

Voluntary control

Question 3

What is the sliding filament theory?

Answer 3

• When the muscles contract sarcomeres become smaller
• BUT filaments do not change in length
• They slide past each other

Question 4

How quickly do FAST TWITCH MUSCLES contract?

Answer 4

They contract quickly

Question 5

How powerful are FAST TWITCH MUSCLES?

Answer 5

Very powerful, the get tired quickly

Question 6

How long are FAST TWITCH MUSCLES?

Answer 6

Short period of time

Question 7

What are FAST TWITCH MUSCLES adapted for?

Answer 7

Short, explosive activity, such as weight lifting

Question 8

Where are FAST TWITCH MUSCLES found?

Answer 8

Anywhere you can do short contractions

Question 9

What type of respiration is adapted for FAST TWITCH MUSCLES?

Answer 9

Anerobic

Question 10

How are FAST TWITCH MUSCLES adapted

Answer 10

• More MYSOSIN, more overlap in sliding filament theory
• More glycogen, stores glucose = more respiration
• More anaerobic enzymes

Question 11

What is the speed of SLOW TWITCH MUSCLES?

Answer 11

They contract slowly, long lasting

Question 12

How powerful are SLOW TWITCH MUSCLES?

Answer 12

Less powerful contractions

Question 13

How long are SLOW TWITCH MUSCLES?

Answer 13

Long period of time

Question 14

What are SLOW TWITCH MUSCLES adapted for?

Answer 14

Neck and back muscles for posture

Question 15

What are respiration are SLOW TWITCH MUSCLES adapted for?

Answer 15

Aerobic

Question 16

How are SLOW TWITCH MUSCLES ADAPTED?

Answer 16

Adapted for aerobic respiration - lactic acid inhibits contraction. More blood supply. More myoglobin. Lots of mitochondria.