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The Digestive Process: How Does the Esophagus Work?
Your esophagus has 1 main purpose: to move food from your throat to your stomach. Here's how it works.
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Coping with Swallowing Difficulties
Swallowing difficulties can happen for reasons ranging from dehydration to illness. Most cases are short-lived, but sometimes you might need medical treatment or special home care.
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Asthma and Physical Activity
Learn the ways that exercise can cause problems when you have asthma and some tips for managing your exercise.
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What is Ejection Fraction?
Ejection fraction is a measurement of how much blood your heart pushes out when it beats.
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Erythropoietin (Blood)
This test measures how much of the hormone erythropoietin you have in your blood. You may need this test to figure out what kind of anemia you have.
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Estradiol (Blood)
This test measures the amount of estradiol (E2), the form of estrogen made mainly by the ovaries.
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Echocardiography for Children
Echocardiography is an imaging test. It uses sound waves to make detailed pictures of the heart.
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Ectopic Pregnancy
A pregnancy that develops outside the uterus is called ectopic pregnancy. This nearly always happens in a fallopian tube. So it’s often called tubal pregnancy. Rarely, an ectopic pregnancy will happen in an ovary, in the cervix, or in the belly (abdomen).
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Teens: Relationship Development
The teen years bring a focus on social interactions and friendships. This includes same-gender friends, same-gender groups of friends, and cross-gender groups of friends. In addition, sexual maturity triggers teens' interest in dating and sexual relationships.
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