Energy Sources In Skeletal Muscle And Fiber Types

Question 1

ATP binding to _____ breaks myosin-actin interaction allowing corss birdge cycle

Answer 1

Myosin

Question 2

3 pathways generated of ADP + 1 phosphate group
1. Phosphorylation of ADP by _______
2. _____phosphorylation of ADP in mitochondria
3. Phosphorylation of ADP from ____ to form H20 and _____

Answer 2

Creatine phosphate; oxidative; glucose, CO2

Question 3

the decrease in muscle tension, decrease in amplitude of contraction, _____ relaxation

Answer 3

Muscle fatigue, increase

Question 4

Type of fiber with high myoglobin content which give its ____ color. The rate of cross-bridge _____, contraction velocity _____ thats why they are called _____ fibers

Answer 4

Type I, red; decrease, decrease; slow

Question 5

Type 1 fiber is more resistant to _____ and helps maintain posture such as back and proximal limb muscles

Answer 5

Fatigue

Question 6

Tyep of muscle fiber that is white in color, has _______ contraction velocity and used in precise movements

Answer 6

Type 2, greater