1
Largest part of the circulatory system, in which oxygen-rich blood flows to all the organs and body tissues, except the heart and lungs, and oxygen-poor blood is returned to the heart
2
Large molecule that contains CO2, H20, O, N, and sometimes S and is made up of amino acids; used by the body for growth and for replacement and repair of body cells
3
Breakdown of food through chewing, mixing and churning
5
Liquid product of digestion
7
Substances in foods that provide energy and materials for cell development, growth, and repair
9
Microscopic blood vessel that connects arteries and veins; has walls one cell thick, through which nutrients and oxygen diffuse into body cells, and waste materials and CO2 diffuse out of body cells
11
Groups of foods - such a bread, cereal, rice and pasta - containing the same type of nutrients
12
Nutrient that usually is the body's main source of energy
14
Two lower chambers of the heart, that contract at the same time, during a heart beat
15
Nutrient that stores energy, cushions organs, and helps the body absorb vitamins
16
Water-soluble or fat-soluble organic nutrient needed in small quantities for growth, for preventing some diseases, and for regulating body functions
18
Two upper chambers of the heart that contract at the same time during a heart beat