Human Body Systems

A neuron that carries information from receptors to the central nervous system.

Voluntary muscle tissue attached to bones.

The main site of digestion and nutrient absorption.

Involuntary muscle tissue found in the walls of internal organs.

Cell body  – The part of a neuron containing the nucleus and most organelles.

The male reproductive cell.

A bundle of nervous tissue that connects the brain to the rest of the body.

A detectable change in the internal or external environment.

The body's physical and emotional response to challenges or demands.

The tiny gap between neurons where neurotransmitters transmit signals.