b
start anaerobic respiration, producing lactic acid buildup.
When an individual exercises vigorously for more than 15 minutes, the muscle cells are unable to obtain oxygen from the blood quickly enough. As a result, the muscle cells
a
send signals to the brain telling it to shut the muscles down.
b
start anaerobic respiration, producing lactic acid buildup.
c
stop functioning properly, resulting in cramps.
d
pull oxygen through the skin in order to continue working
1 answer