Human Body Systems

A nutrient required by the body in relatively large amounts.

Physical breakdown of food into smaller pieces.

A person's emotional, psychological, and social health.

A nutrient required by the body in relatively small amounts.

Microscopic projections on epithelial cells that greatly increase surface area for absorption.

An inorganic nutrient needed for healthy body functions.

A neuron that carries impulses from the central nervous system to muscles or glands.

Tissue specialised for contraction and movement.

A fatty insulating layer that speeds the transmission of nerve impulses.