Fast twitch fibers get their coloration from the large number of blood vessels running through and supplying these muscle fibers.
False
True
2.
Which muscle fibers are best suited for jogging or bicycling?
Yellow fibers
Slow-twitch
Fast-twitch
Stretch reflex
3.
Strength training leads to increased metabolic rates.
True
False
4.
Each motor unit contracts as an entire unit.
False
True
5.
Cardiac muscle refers to muscles of the heart that must recover from fatigue with every heartbeat, or about 60-70 times per minute.
False
True
6.
If the demand placed on a muscle causes it to fatigue, then that muscle will develop better endurance.
True
False
7.
Smooth muscles are those responsible for body movement.
False
True
8.
Which muscle fibers are best suited for sprinting?
Yellow fibers
White fibers
Motor-neuron cells
Red fibers
9.
Strength training improves the strength of muscles alone.
False
True
10.
According to the SAID principle, if the demands placed upon a muscle cause it to become stressed, then there exists a chance that the muscle will weaken.
True
False
11.
A muscle fiber is a group of motor units.
False
True
12.
Slow-twitch muscles are small in diameter and contract slowly.
False
True
13.
Each muscle fiber can either contract or expand depending upon the demands placed upon it at any given moment.
True
False
14.
Isometric exercise occurs when force is exerted against an object that does not move.
True
False
15.
Isotonic exercise occurs when force is exerted against an object that does move.
True
False