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How many bones does an adult have? 206 fun-human-body-facts
Which is the biggest bone in the body? The femur (thigh bone) fun-human-body-facts
Which is the smallest bone? The stapes, in the ear fun-human-body-facts
How many teeth do most adults have? 32, including wisdom teeth fun-human-body-facts
How many baby teeth do children have? 20 fun-human-body-facts
What organ pumps blood? The heart fun-human-body-facts
What are the lungs for? Breathing in oxygen and out carbon dioxide fun-human-body-facts
What is the biggest organ? The skin fun-human-body-facts
Which organ is used for thinking? The brain fun-human-body-facts
How many chambers does the heart have? Four fun-human-body-facts
What color is blood inside the body? Red fun-human-body-facts
What do red blood cells carry? Oxygen fun-human-body-facts
What do white blood cells do? Fight germs fun-human-body-facts
What is the job of the stomach? To break down food with acid and churning fun-human-body-facts
What does the liver do? Cleans the blood and helps digest fat fun-human-body-facts
What do kidneys do? Filter waste from blood to make urine fun-human-body-facts
What organ protects your brain? The skull fun-human-body-facts
What protects your heart and lungs? The rib cage fun-human-body-facts
What are muscles for? Moving the body fun-human-body-facts
Which muscle never gets a rest? The heart muscle fun-human-body-facts
How many senses do we usually count? Five: sight, hearing, smell, taste and touch fun-human-body-facts
What part of the eye lets in light? The pupil fun-human-body-facts
What part of the eye is colored? The iris fun-human-body-facts
What do ears help us do? Hear and keep balance fun-human-body-facts
What are taste buds? Tiny sensors on the tongue that detect tastes fun-human-body-facts
What are the basic tastes? Sweet, salty, sour, bitter and umami fun-human-body-facts
What are fingerprints? Unique patterns on fingertips fun-human-body-facts
What does the skeleton do? Gives shape, protects organs, and helps movement fun-human-body-facts
How many ribs do most people have? 24, in 12 pairs fun-human-body-facts
What is the spine? A column of bones (vertebrae) that protects the spinal cord fun-human-body-facts
What are joints? Places where two bones meet fun-human-body-facts
What is the windpipe called? The trachea fun-human-body-facts
What tube carries food to your stomach? The esophagus fun-human-body-facts
How long is the small intestine? About 20 feet (6 meters) in adults fun-human-body-facts
What happens when you sneeze? Your body pushes out dust or germs from your nose fun-human-body-facts
Why do we get hiccups? The diaphragm twitches suddenly fun-human-body-facts
Why do we sweat? To cool the body down fun-human-body-facts
How much of your body is water? About 60 percent in adults fun-human-body-facts
How often does your heart beat? About 60 to 100 times a minute for adults at rest fun-human-body-facts
How many hours of sleep do kids need? About 9 to 12 hours, depending on age fun-human-body-facts
What does sleep do? Lets your body and brain rest and grow fun-human-body-facts
What are vitamins for? Helping the body work and grow fun-human-body-facts
What is calcium good for? Strong bones and teeth fun-human-body-facts
What is the nervous system? The brain, spinal cord and nerves that send messages fun-human-body-facts
What is DNA? The instruction code inside cells fun-human-body-facts
What is a cell? The smallest building block of living things fun-human-body-facts
How many muscles help you smile? It takes several muscles in your face fun-human-body-facts
What is the funny bone? A spot on your elbow where a nerve runs near the surface fun-human-body-facts
What is goosebumps? Tiny muscles at the base of hairs tighten fun-human-body-facts
What does the cerebellum control? Balance and coordination fun-human-body-facts
What are tonsils? Tissue at the back of the throat that helps fight germs fun-human-body-facts
What is an appendix? A small pouch attached to the large intestine fun-human-body-facts
What do eyelashes do? Help keep dust out of your eyes fun-human-body-facts
What do nails protect? The tips of your fingers and toes fun-human-body-facts
What is the pulse? The beat of your heart felt in your wrist or neck fun-human-body-facts
What is the diaphragm? A muscle under the lungs that helps you breathe fun-human-body-facts
What is the largest muscle? The gluteus maximus in the bottom fun-human-body-facts
What helps wash hands clean? Soap and water for at least 20 seconds fun-human-body-facts