Chapter 10

Question 1

length tension relationship

Answer 1

The resting length of a muscle and the tension the muscle can produce at this resting length.

Question 2

velocity and duration

Answer 2

influenced by muscle fiber type, load, and recriutment ( -How fast a muscle contracts and how long it can stay contracted is influenced by:

*Muscle fiber type

*Load

*Recruitment )

Question 3

muscle fiber types

Answer 3

slow oxidative fibers, fast oxidative fibers fast glycolytic fibers

Question 4

slow oxidative fibers

Answer 4

contract slowly, have slow acting myosin ATPases, and are fatigue resistant

Question 5

load and recruitment

Answer 5

• Load: muscles contract fastest when no load is added
• The greater the load, the shorter the duration of contraction
• The greater the load, the slower the contraction
• Recruitment: the more motor units contracting, the faster and more prolonged the contraction

Question 6

adaptations

Answer 6

• aerobic exercise
• resistance exercise

Question 7

muscle actions and interactions

Answer 7

agonist(prime mover) antagonist ( counter that movement) synergist ( helpers and involved in that movement but not as strong )

Question 8

relative position to joints

Answer 8

• flexion
  -extension
  -abduction
  -adduction

Question 9

fascicle arrangement

Answer 9

• circular
  -convergent
  -parallel
  -pennate

Question 10

lever systems

Answer 10

lever, fulcrum, effort, load, mechanical advantage, mechanical disadvantage