Differentiating between Slow Twitch Type I and Fast Twitch T

Differentiating between Slow Twitch (Type I) and Fast Twitch (Type II) muscle fibers: the Type I fiber has:

a. latency is: Longer or shorter?

b. increase in muscle tension is: more rapid or less rapid?

c. resistance to fatigue is: greater or lesser?

d. ability to use oxygen is: greater or lesser?

e. glycogen stores are: larger or smaller?

f. sarcoplasmic reticulum is: better developed or less well developed?

g. the ATPase activity is: more rapid or less rapid?

h. the fiber appearance is: paler or more red?

Solution

A. Latency is shorter.
B. Increase in muscle tension
C. Resistance to fatigue is high
D. Ability to use oxygen is high
E. Glycogen stores smaller
F. Sarcoplasmic reticulum is highly developed.
G.ATPase activity is more rapid
H. Red fibres

Slow twitch:
1.Slow-twitch fibers include mitochondria, that use oxygen to create adenosine triphosphate (ATP), that is used for muscle contractions, and are taken into consideration aerobic.
2.Slow-twitch fibers are also referred to as red fibers due to the fact they include myoglobin
3.Because they are able to offer their own ource of energy,slow-twitch fibers can sustain pressure for an extended period of time, but they\'re now not able to generate a significant amount of force.
4.Slow-twitch fibers have a low activation threshold, that means they may be the primary recruited while a muscle contracts. If they are able to’t generate the quantity of pressure essential for the particular interest, the quick-twitch muscle fibers are engaged.
5.The tonic muscle groups liable for keeping posture have a better density of slow-twitch fibers.
Fast twitch:
1.Fast-twitch fibers can be further categorised into (1) fast-twitch IIa - fast oxidative glycolytic, due to the fact they use oxygen to assist convert glycogen to ATP, and (2) speedy-twitch kind IIb - fast glycolytic, which rely on ATP stored in the muscle mobile to generate electricity.
2.Fast-twitch fibers have a excessive threshold and can be recruited or activated best while the force needs are more than the sluggish-twitch fibers can meet.
3.The larger speedy-twitch fibers take a shorter time to reach height pressure and may generate better amounts of force than slow-twitch fibers.
4.Fast-twitch fibers can generate greater pressure, but are faster to fatigue when compared to slow-twitch fibers.
5.Strength and energy can growth the wide variety of fast-twitch muscle fibers recruited for a particular motion.
6.Fast-twitch fibers are called “white fibers” because do not comprise much blood, which offers them a lighter look than sluggish-twitch fibers.