What Are My Taste Buds?
Your tongue is covered with little bumps that are called “papillae”. Inside each papillae are special cells that form your taste buds. Liquids in your mouth wet the...
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How Do We Hear Sounds?
How Do We Hear Sounds? When sounds are made, they set up movements in the air. These movements are called sound waves. The cup-like shape of the outer ear collects the...
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How Can Ice Cream Make Your Teeth Hurt?
How Can Ice Cream Make Your Teeth Hurt? Sometimes a bite of ice cream will make your teeth hurt or give you an “ice cream” headache. The nerves in your...
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What Makes Your Foot Go to Sleep?
What Makes Your Foot Go to Sleep? When you sit with your leg doubled up, you are squeezing the blood vessels in your leg so that the blood can barely pass through them....
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How Do We Know When We Are Hungry?
How Do We Know When We Are Hungry? Hunger begins when substances like glucose (sugar), minerals, vitamins, and amino acids are missing from the blood. Nerves in the...
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