Cells In Running

Question 1

What are slow twitch muscle fibers primarily used for?

Answer 1

Endurance activities such as long-distance running.

Question 2

True or False: Fast twitch muscle fibers are more efficient at using oxygen than slow twitch fibers.

Answer 2

False.

Question 3

Fill in the blank: Fast twitch type A fibers are also known as ______ fibers.

Answer 3

intermediate fibers.

Question 4

What type of exercise primarily recruits fast twitch type B muscle fibers?

Answer 4

Short, explosive activities like sprinting.

Question 5

Which type of muscle fiber has a higher fatigue resistance?

Answer 5

Slow twitch fibers.

Question 6

Multiple choice: Which muscle fiber type is characterized by a high oxidative capacity? A) Slow twitch B) Fast twitch type A C) Fast twitch type B

Answer 6

A) Slow twitch.

Question 7

True or False: Fast twitch type B fibers are suited for aerobic metabolism.

Answer 7

False.

Question 8

What is the primary energy source for slow twitch muscle fibers?

Answer 8

Aerobic metabolism using oxygen.

Question 9

Fill in the blank: Fast twitch type A fibers can utilize both ______ and ______ metabolism.

Answer 9

aerobic and anaerobic.

Question 10

Which type of muscle fibers would be more beneficial for a marathon runner?

Answer 10

Slow twitch fibers.

Question 11

Multiple choice: Which of the following is NOT a characteristic of fast twitch type B fibers? A) Low endurance B) Quick contraction speed C) High oxidative capacity

Answer 11

C) High oxidative capacity.

Question 12

True or False: Slow twitch fibers have a larger diameter than fast twitch fibers.

Answer 12

False.

Question 13

What color are slow twitch muscle fibers typically described as?

Answer 13

Red.

Question 14

Fill in the blank: The primary function of fast twitch fibers is ______.

Answer 14

power and speed.

Question 15

What adaptations occur in slow twitch fibers with endurance training?

Answer 15

Increased capillary density and mitochondrial content.

Question 16

Multiple choice: Which type of muscle fiber is more prevalent in sprinters? A) Slow twitch B) Fast twitch type A C) Fast twitch type B

Answer 16

C) Fast twitch type B.

Question 17

True or False: Fast twitch fibers generate more force than slow twitch fibers.

Answer 17

True.

Question 18

What is a common characteristic of fast twitch type A fibers?

Answer 18

They are moderately resistant to fatigue.

Question 19

Fill in the blank: The contraction speed of slow twitch fibers is ______ compared to fast twitch fibers.

Answer 19

slower.

Question 20

What type of athlete would benefit most from training fast twitch type A fibers?

Answer 20

Middle-distance runners.

Question 21

Multiple choice: Which muscle fiber type is primarily anaerobic? A) Slow twitch B) Fast twitch type A C) Fast twitch type B

Answer 21

C) Fast twitch type B.

Question 22

True or False: Slow twitch fibers contain more myoglobin than fast twitch fibers.

Answer 22

True.

Question 23

What physiological change occurs in fast twitch fibers with strength training?

Answer 23

Increased muscle fiber size (hypertrophy).

Question 24

Fill in the blank: Fast twitch fibers primarily rely on ______ for energy.

Answer 24

glycolysis.

Question 25

What is the main difference in recruitment patterns between slow twitch and fast twitch fibers during exercise?

Answer 25

Slow twitch fibers are recruited first for endurance, followed by fast twitch for high intensity.

Question 26

Multiple choice: Which fiber type is likely to be recruited during low-intensity activities? A) Slow twitch B) Fast twitch type A C) Fast twitch type B

Answer 26

A) Slow twitch.