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During inspiration the diaphragm contracts and moves down.
Pyruvic Acid
A colorless liquid with a sour taste; a key intermediate in several metabolic pathways, including glycolysis.
Lactic Acid
A waste product that must be released from the cell. It is produced when a cell is low on oxygen and converts pyruvic acid.
Myoglobin
A protein in muscle cells that stores oxygen and gives muscle tissue its red color.
Lactic Acid
An organic acid produced in muscles during intense activity, responsible for the sensation of muscle soreness.
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