key term - Lactic acid

Definition

Lactic acid is a byproduct produced in muscle cells during strenuous exercise when oxygen levels are low, leading to its accumulation in the muscles. It is associated with muscle fatigue and the burning sensation experienced during intense physical activity.

Related terms

Anaerobic Respiration: A type of respiration that occurs without oxygen, resulting in the production of lactic acid from glucose breakdown.

Muscle Fatigue:

The decline in ability of a muscle to generate force, often experienced after prolonged activity and partly due to the accumulation of lactic acid.

Glycolysis:

The process of breaking down glucose into pyruvate during cellular respiration, which can lead to lactic acid production under anaerobic conditions