Circulatory
This muscular organ pumps blood throughout the body.
Heart
These organs exchange oxygen and carbon dioxide with the blood.
Lungs
This hard structure forms the skeleton and protects organs.
Bone
This muscular organ churns food and uses acid and enzymes to digest it.
Stomach
This organ is the control center of the body and processes information.
Brain
These hollow tubes transport blood through the body.
Blood Vessels
This hollow space behind the nose filters, warms, and moistens air.
Nasal Cavity
This tissue contracts and relaxes to produce movement.
Muscle
Most digestion and nutrient absorption occur in this organ.
Small Intestine
This long fiber carries electrical signals through the body.
Nerve
These blood cells carry oxygen from the lungs to body tissues.
Red Blood Cells
This tube carries air to and from the lungs.
Trachea
This is the place where two bones meet and movement occurs.
Joint
This is the process of breaking down food into smaller molecules.
Digestion
This bundle of nerves connects the brain to the rest of the body.
Spinal Cord
These tiny blood vessels are where gas exchange occurs between blood and cells.
Capillaries
This structure contains the voice box and vocal cords.
Larynx
This tough band of tissue connects muscle to bone.
Tendon
This organ helps digest fats and filters blood.
Liver
These organs detect changes in the environment, such as eyes and ears.
Sense Organs
This is the liquid portion of blood that carries cells, nutrients, hormones, and waste.
Plasma
This process occurs when oxygen enters the blood and carbon dioxide leaves the blood.
Gas exchange
This strong band of tissue connects bone to bone.
Ligament
This organ absorbs water and forms solid waste.
Large Intestine
This part of the nervous system is made up of the brain and spinal cord.
Central Nervous System (CNS)