Categorie: Tutti - mitochondria - muscle - contraction - atp

da Arif Fakhry bin Zamron mancano 3 anni

155

CHAPTER 4: NEUROMUSCULAR

The text discusses the characteristics and functions of different muscle fibers and types of muscle contractions. It differentiates between fast-twitch and slow-twitch muscle fibers, highlighting their structural and functional differences.

CHAPTER 4:
NEUROMUSCULAR

CHAPTER 4: NEUROMUSCULAR

SLOW AND FAST TWITCH MUSCLE FIBER

FAST TWITCH
IIB/X

USES THE GLYCOLYTIC (ANAEROBIC SYSTEM)

PHYSICAL SAME LIKE TYPE IIA

TYPE IIA

USES SUPPLY ATP (ANAEROBIC & AEROBIC)

LESS MITOCHONDRIA

WHITE IN COLOR

LARGE DIAMETER

SLOW TWITCH (TYPE 1)
STORE OXYGEN IN MYOGLOBIN
FIRE SLOW, TAKE LONG TIME TO FATIGUE
CONTAIN MITOCHONDRIA
AEROBIC RESPIRATORY (SUPPLY ATP)
SMALLER IN DIAMETER

TYPES MUSCLE CONTRACTION

CONCENTRIC CONTRACTION
ECCENTRIC

SLOWS THE LOWERING OF FOREARM AND CONTROL THE EXTENSION OF THE ELBOW

DOWNWARD PHASE

MUSCLE LENGTHEN

CONCENTRIC

PULLS THE FOREARM TO CAUSE THE FLEXION

UPWARD PHASE

MUSCLE SHORTEN