The role or job of an object or part of an object.

A thin line that carries signals between the brain, spinal cord, and the parts of the body.

The system that controls and shares information with the parts of the body.

One of the parts of the body which makes up a system. The brain, the heart, and the stomach are examples of these.

The bundle of nerves that runs up and down the center of the back. This connects the brain to the nerves. It carries signals between the brain and the parts of the body.

A group of objects or parts that work together.

A part of the skeletal system that provides support and protects the body. They move because muscles are connected to them.

When muscles tighten.

The role or job of an object or part of an object.

The place where two or more bones connect.

A part of the muscular system that can contract or relax causing the body to move.

The system that helps the body to move by contracting and relaxing muscles.

When muscles loosen.

The system that provides structure, protection, and support for the body.

Moves air from the trachea into the left and right lungs.

The process of forcing air out of the lungs.

The process of breathing air into the lungs.

Organs in the body that move air in and out of the body. The human body contains a right and left lung.

A gas that is found in the air that we breathe.

The measure of how many breaths a person takes in one minute.

A system of the body that moves air in and out of the body. The system includes the lungs, bronchi, trachea, and nose and mouth.

Moves air from the nose and the mouth into the left and right bronchi. Also known as the windpipe.

Blood vessels that carry blood away from the heart.

A tube such as an artery or vein that transports blood.

A system of the body that moves blood throughout the body.

A muscular organ that pumps blood through the entire body.

Blood vessels that move blood toward the heart.

The breakdown of food into nutrients.

A system of the body that breaks down food so that it can be transported to the rest of the body.

A muscular tube that connects the throat to the stomach. It pushes food into the stomach by contracting its muscles.

Sends bile from the liver to the small intestine to aid in digestion.

Absorbs water for the body and compacts waste so it can exit the body.

Sends bile to the gall bladder to aid in digestion.

The beginning of the digestive tract. It contains the teeth and the tongue. Food is chewed and swallowed in the mouth.

Aids in digestion by sending digestive juices to the small intestine.

Aids in digestion by absorbing nutrients from the food and sending them to the rest of the body.

Mixes and breaks down the food so it becomes a soup-like consistency.