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Tiny sacs of lung tissue specialized for the movement of gases between air and blood. |
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A muscular opening at the end of the rectum through which waste material is eliminated from the body. |
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The largest artery in the body; receives blood from the left ventricle.
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A blood vessel that carries blood away from the heart. |
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Each of the two upper chambers of the heart that receives blood that comes into the heart. |
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The part of the brain that lies between the cerebellum and spinal cord and controls the body’s involuntary actions. |
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| The passages that direct air into the lungs. |
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A tiny blood vessel where substances are exchanged between the blood and the body cells. |
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The part of the brain that coordinates the actions of the muscles and helps maintain balance. |
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The part of the brain that interprets input from the senses, controls movement, and carries out complex mental processes. |
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A large, dome-shaped muscle that plays an important role in breathing. |
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A muscular tube that connects the mouth to the stomach.
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The organ that stores bile after it is produced by the liver. |
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A hollow, muscular organ that pumps blood throughout the body. |
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A major organ of the excretory system which removes urea and other wastes from the blood. |
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| The last section of the digestive system, where water is absorbed into the bloodstream and the remaining material is eliminated from the body. |
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| The voice box; located in the top part of the trachea, underneath the epiglottis. |
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The largest organ in the body; it plays a role in many body processes. |
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The main organs of the respiratory system. |
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Small filtering structure found in the kidneys that removes wastes from blood and produces urine. |
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A cell that carries information through the nervous system.
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| A triangular organ that lies between the stomach and first part of the small intestine. |
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| The throat; part of both the respiratory and digestive systems. |
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The end of the large intestine where waste material is compressed into a solid form before being eliminated. |
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A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body. |
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| The thin layer of tissue forming the natural outer covering of the body of a person or animal. |
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| The part of the digestive system in which most chemical digestion takes place. |
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| The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system. |
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A J-shaped, muscular pouch located in the abdomen. |
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| The windpipe; a passage through which air moves in the respiratory system. |
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| A narrow tube that carries urine from one of the kidneys to the urinary bladder. |
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A small tube through which urine flows from the body. |
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| A sacklike muscular organ that stores urine until it is eliminated from the body. |
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A blood vessel that carries blood back to the heart. |
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| Each of the two lower chambers of the heart that pumps blood out of the heart. |
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A blood cell that fights disease. |
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