Energy Systems in Human Physiology

These flashcards cover key concepts related to energy systems in human physiology, focusing on the processes of energy production and their significance in physical activity.

Energy

The ability to do work for a given period of time.

Adenosine Triphosphate (ATP)

The usable form of energy produced by the body from food.

Anaerobic respiration

The process of producing energy without oxygen, resulting in ATP and lactic acid.

Aerobic respiration

The process of producing energy with oxygen, resulting in ATP, water, and carbon dioxide.

Glycogen

A stored form of glucose in muscles and the liver, used for energy production.

Energy systems

Different pathways in the body that produce usable energy through aerobic or anaerobic respiration.

ATP-PC system

An anaerobic energy system for short, explosive bursts of exercise, lasting 8-10 seconds.

Lactic Acid system

An anaerobic energy system used for medium-length exercise, producing energy and lactic acid.

Aerobic system

An aerobic energy system used for long-distance exercise, with slow energy production and an unlimited store.

Fatigue

A state of tiredness resulting from lactic acid build-up during anaerobic activities.

Kilojoules

A measurement of energy provided by food which is used to produce ATP.

Glucose

A simple sugar produced from carbohydrates that is vital for energy production.