12.24

Question 1

Which of the muscles are the slowest to contract and to relax

Answer 1

smooth muscles

Question 1

Action potentials in the axon terminal are followed by?

Answer 1

Muscle twitch

Question 2

What are skeletal muscles classified by?

Answer 2

Speed and fatigue Resistance

Question 3

What do slow twitch fibers (ST or type 1) rely on?

Answer 3

Rely primarily on oxidative phosphorylation

Question 4

Which fibers develop tension faster and split ATP more rapidly

Answer 4

Fast-twitch fibers

Question 5

Function of fast twitch fiber

Answer 5

Develop tension faster
Split A T P more rapidly
Pumps Ca2+ more rapidly into the SR

Question 6

What pumps Ca2+ into sarcoplasmic reticulum more rapidly/

Answer 6

Fast-twitch fibers

Question 7

Which fiber Use oxidative and glycolytic metabolism?

Answer 7

Fast-twitch oxidative-glycolytic fiber (F O G or type IIA)

Question 8

Which fiber Relies primarily on anaerobic glycolysis

Answer 8

Fast-twitch glycolytic fibers (F G or type IIB/X)

Question 9

what does Fast-twitch glycolytic fibers (F G or type IIB/X) rely on

Answer 9

anaerobic glycolysis

Question 10

What binds oxygen in muscle so it is readily available for aerobic processes

Answer 10

Myoglobin

Question 11

Myoglobin

Answer 11

binds oxygen in muscle so it is readily available for aerobic processes

Question 12

Which fibers have more myoglobin?

Answer 12

oxidative fibers

Question 13

Which muscle has large amount of red myoglobin, numerous mitochondria, and extensive capillary, blood supply, in contrast to fast-twitch glycolytic muscle?

Answer 13

Slow-twitch oxidative muscle