Science

digestive system

the body system that breaks down food and absorbs nutrients

mechanical digestion

the form of digestion that grinds and crushes food into smaller particles

chemical digestion

the form of digestion using chemicals to break down food molecules into nutrients

herbivore

an animal that feeds on plants

carnivore

an animal that gets most or all of its energy and nutrients from eating other animals

prey

an animal that a carnivore eats

filter feeder

an animal that strains tiny algae, protists, or other food items out of the water

omnivore

an animal that will eat both plant and animal matter

scavenger

an animal that eats dead animals

excretory system

a system of special organs that rid an animals body

kidney

an organ in vertebrates that filters waste from blood

circulatory system

The multiple organs that work together to transport nutrients and oxygen to the cells and remove wastes and carbon dioxide

heart

a muscular organ for pumping blood through the body

vessel

an organ that conducts blood through an animals body

respiratory system

the multiple organs that bring in oxygen and remove carbon dioxide from the body

spiracle

a tiny opening that takes in air along the side of the body of certain animals

gill

an organ that exchanges gases with aquatic surroundings

lung

an organ in vertebrates that exchanges gas with the air