Key for Human Torso

• 1 Head
• 2-4 Brain: control center of the body, which does everything from coordinating our movements to managing our thoughts and emotions. The brain is divided into two hemispheres.
• 2 The cerebrum or cortex is the largest part of the human brain and is associated with higher brain function such as thought and action.
• 3 The cerebellum (Latin for little brain) is a region of the brain that plays an important role in the integration of sensory perception, coordination and motor control.
• 4 Medulla, aka brainstem (or brain stem) is the lower part of the brain, adjoining and structurally continuous with the spinal cord.
• 5 Eyes are organs that detect light, and send electrical impulses along the optic nerve to the visual and other areas of the brain.
• 6 Larynx, colloquially known as the voicebox, is an organ in the neck of mammals involved in protection of the trachea and sound production.
• 7, 8 Left and Right Jugular Veins which bring deoxygenated blood from the brain and head back to the heart.
• 9, 10 Left and Right Carotid Arteries which bring oxygen rich blood to the brain and head.
• 11 Trachea: windpipe that brings oxygen to our lungs. The trachea divides into the left and right bronchi. (On the model, the trachea is attached to the esophagus.)
• 12, 13 Bronchi: tube that leads to both lungs. Like a branch, once inside the lung, each bronchus divides again and again, becoming narrower and narrower.
• 14 Heart: engine of the circulatory system that pumps oxygen-rich blood throughout the body
• 15 Aorta: an artery of the heart, which transports blood from the heart to the rest of the body. Blood provides important nourishment to all body organs and tissues.
• 16 Superior Vena Cava: a large diameter, yet short vein that carries deoxygenated blood from the upper half of the body to the heart's right atrium.
• 17 Inferior Vena Cava: the large vein that carries de-oxygenated blood from the lower half of the body into the right atrium of the heart.
• 18 Pulmonary artery: one of the main arteries of the heart. It transports blood from the heart to the lungs.
• 19 Pulmonary vein: carries blood from the lungs to the left atrium of the heart.
• 20, 21 Lungs: two organs of respiration that bring fresh oxygen into our bodies and remove carbon dioxide and other gaseous waste products.
• 22 Esophagus: leads chewed food from the throat to the stomach. (On the model, the esophagus connects to the trachea.)
• 23 Diaphragm: muscle in our rib cage that pulls air into our lungs. As we breathe air in, the diaphragm contracts, or tightens and flattens, allowing air to be sucked into the lungs.
• 24 Liver: body's largest organ. Process nutrients from the intestine and remove unwanted or harmful chemicals that are produced in the body or that are taken into the body.
• 25 Gall bladder: excess bile is stored in the gall bladder. It is a green muscular sac attached to the lower part of the liver. (On the model, the gall bladder is located on the liver.)
• 26 Stomach: storage organ for large quantities of food. Protein in your food is digested here.
• 27 Duodenum is the first section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds.
• 28 Pancreas is a gland organ in the digestive and endocrine system of vertebrates. It produces several important hormones, and secretes pancreatic juice to the small intestine.
• 29 Spleen: organ involved in the production and maintenance of red blood cells. It is located on the left side of the body behind the stomach.
• 30, 31 Kidneys: two bean-shaped organs, in the middle of the back. Among other functions, kidneys regulate the composition of the blood and stimulate the making of red blood cells.
• 32, 33 Adrenal glands are the star-shaped endocrine glands that sit on top of the kidneys, chiefly responsible for releasing hormones in conjunction with stress.
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• 36
• 37 Celiac Artery supplies oxygenated blood to the liver, stomach, abdominal esophagus, spleen and the superior half of both the duodenum and the pancreas.
• 38 Common Iliac Vein
• 39 Common Iliac Artery
• 40-47 Intestines: tube that extends from the stomach and completes the job of digesting food so that food can be absorbed in the blood. Comprised of two main sections.
• 40, 41 Small intestine: longest section of the digestive tract with an average length of about 6 meters. Almost all the body's nutrient absorption occurs in the small intestine.
• 44-47 Large intestine: also known as the colon, the large intestine is the final organ of the digestive process. It is responsible for drying out indigestible food residues by absorbing fluid and producing solid waste for elimination.
• Vertebrae: also known as the backbone. The vertebrae supports the body in an upright position and protects the spinal cord.
• 48-56 Muscular system: part of our body that allows us to move; muscles are made up of special tissues that can contract, or shorten, when they receive a signal from the brain.