The Body Trivia
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Get under your own skin with trivia on human anatomy and the immune system, the incredible machinery keeping you alive right now. From the 206 bones in your skeleton to the microscopic defenders fighting invaders as you read this, the human body is an engineering marvel. Take a look inside and see if your anatomy knowledge has real backbone.
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The largest organ in the human body, this protective barrier weighs about 8 pounds and covers roughly 22 square feet in adults.
- Liver
- Skin
- Small intestine
- Lungs
Adults have 206 of these hard structures that protect organs and provide the framework that allows movement.
- Muscles
- Tendons
- Bones
- Ligaments
This spongy organ in your chest allows oxygen to enter the blood and carbon dioxide to exit with each breath you take.
- Lungs
- Heart
- Diaphragm
- Trachea
The control center of your entire body, this three-pound organ inside your skull contains about 86 billion neurons.
- Spinal cord
- Brain
- Pituitary gland
- Cerebellum
Your body contains about 600 of these tissues that contract to produce movement and make up roughly 40% of your body weight.
- Bones
- Tendons
- Ligaments
- Muscles
This tube about 30 feet long processes the food you eat, extracting nutrients before waste exits the body.
- Esophagus
- Stomach
- Intestines
- Colon
This reddish-brown organ on your right side filters blood, produces bile, and performs over 500 different functions.
- Liver
- Kidney
- Spleen
- Pancreas
This muscular bag in your abdomen churns food with acid strong enough to dissolve metal, breaking down your meals.
- Gallbladder
- Stomach
- Small intestine
- Esophagus
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