Chapter 8-1c Skeletal Muscle Fiber Types

Question 1

does aerobic or anaerobic use oxygen?

Answer 1

aerobic

Question 2

what is the long duration (aerobic) skeletal muscle fiber called?

Answer 2

slow oxidative fiber

Question 3

what is the short duration (anaerobic) skeletal muscle fiber called?

Answer 3

fast glycolytic fiber

Question 4

what is the main function of slow oxidative muscle fibers?

Answer 4

maintaining posture and aerobic endurance activities

Question 5

what is the main function of fast glycyolytic muscle fibers?

Answer 5

rapid, intense movements of short duration

Question 6

do slow oxidative or fast glycolytic contain a larger amount of myoglobin?

Answer 6

slow oxidative

Question 7

do slow oxidative or fast glycolytic contain fewer mitochondria?

Answer 7

fast glycolytic

Question 8

do slow oxidative or fast glycolytic contain more capillaries?

Answer 8

slow oxidative

Question 9

is slow oxidative or fast glycolytic red?

Answer 9

slow oxidative

Question 10

do slow oxidatiave or fast glycolytic fibers fatigue faster?

Answer 10

glycolytic

Question 11

is the rate of atp hydrolysis by myosin atpase faster or slower in slow oxidative fibers vs fast glycolytic fibers?

Answer 11

slower in slow oxidative
faster in fast glycolytic

Question 12

what does aerobic (endurance) exercise increase in the muscle structure?

Answer 12

muscle capillaries
number of mitochondria
myoglobin synthesis

Question 13

what is it called when our muscles grow by increasing the size of our muscle cells?

Answer 13

hypertrophy

Question 14

what parts of the muscle increase in hypertrophy?

Answer 14

fiber
mitochondria
myofilaments
glycogen stores
connective tissue

Question 15

what is the opposite of hypertrophy?

Answer 15

atrophy

Question 16

name the pink highlighted muscle fiber

Answer 16

slow oxidative fiber

Question 17

name the pink highlighted muscle fiber

Answer 17

fast glycolytic fiber

Question 18

name the pink highlighted fiber

Answer 18

fast oxidative-glycolytic fiber

Question 19

if fibrous tissue replaces lost muscle tissue, can you go back to having the muscle tissue?

Answer 19

no