Unit 2 High School Health

Enzyme

an organic substance responsible for initiating chemical changes within the body

Nutrient

chemical substance that is absorbed by the body through the process of digestion

Aerobic

dependent upon oxygen to function

Anaerobic

not dependent upon oxygen to function

Cardiovascular

relating to the circulatory system

Calorie

the amount of heat needed to raise the temperature of one kilogram of water one degree Celsius; this measure is equivalent to a kilo-calorie

Catabolism

the conversion of nutrients into energy

Atrophy

the decrease in functionality of the body due to lack of use or poor nutrition

Metabolism

the process by which a cell converts nutrients into energy or materials for growth, repair, reproduction, and maintenance

Anabolism

the process by which the cell uses nutrients to repair or build new tissues

Nutrition

the proper supply of nutrients essential for growth, reproduction, repair, immunity, and energy