10.2 Energy for muscle contraction Flashcards

creatine phosphate

high-energy compound that builds up when a muscle is resting; fastest way to make ATP for muscles, but only last

for about 8 seconds

Aerobic cellular respiration

Takes place in the mitochondria and usually provides

majority of the muscles ATP; Uses glucose from glycogen and fatty acids as fuel

Glycogen

Storage form of glucose

myoglobin

stores oxygen in muscle cells

fermentation (anaerobic respiration)

supplies ATP without the use of oxygen. Glucose is broken down during fermentation to produce lactate.

oxygen deficit

lack of ATP needed to pump calcium ions back into the sarcoplasmic reticulum to break the linkages between actin and myosin, so the muscle can relax

order of energy sources

Creatine, fermentation, aerobic