Main division of the nervous system including your brain and spinal cord.

Main division of the nervous system including your nerves that connect the central nervous system to all parts of the body.

Specialized nerve cells.

The part of the nervous system that deals with actions that you control.

A system dealing with actions you do not control.

A condition caused by the brain being jarred and striking the inside of the skull.

The body system that converts fuel/food into usable energy.

The process of changing food into materials the body can use.

Proteins that affect the many body processes.

A fluid made by salivary glands.

A coiled, tube like organ that is about 20 feet long.

Your body's waste removal system.

The process of removing wastes from the body.

The large intestines - about 5 feet long.

Organs that filter water and dissolved wastes from the blood and help maintain proper levels of water and salts in the body.

A chemical communication system that controls many body functions.

A group of cells or an organ that secretes a substance.

A gland that signals other endocrine glands to produce hormones when needed.

The body system containing the organs that make possible the production of offspring.

The male sex cell.

Occurs when an internal organ pushes against or through a surrounding cavity wall.

When a males sperm cell joins with a females egg cell.

The release of one mature egg cell each month.

When the lining material, unfertilized egg, and some blood flow out of the body.

Hormonal changes that occur in females from the beginning of one menstruation to the next.

The nervous system is the body's ______and______center.

The brain receives and interprets_____messages and sends responses.

Eating a variety of_____foods can help keep your body systems working well.

The food particles that cannot be digested move from the__________into the_________.