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2. Quizlet - Wikipedia

   en.wikipedia.org/wiki/Quizlet

   Quizlet is a multi-national American company that provides tools for studying and learning. [1] Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [2] and released to the public in January 2007. [3] Quizlet's primary products include digital flash cards, matching games, practice electronic ...

3. Endocrine System: What Is It, Functions, Organs & Conditions

   www.healthline.com/health/the-endocrine-system

   The endocrine system is a network of glands and organs located throughout the body. It’s similar to the nervous system in that it plays a vital role in controlling and regulating many of the ...

4. Active and Passive Immunity: What’s the Difference? - WebMD

   www.webmd.com/vaccines/difference-between-active...

   A benefit of active immunity is that it lasts longer than passive immunity. Active immunity creates a certain kind of cell that has a long memory, and when they recognize a dangerous pathogen ...

5. Pituitary Gland: Anatomy, Function, Diagram, Conditions ...

   www.healthline.com/human-body-maps/pituitary-gland

   The pituitary gland is small and oval-shaped. It’s located behind your nose, near the underside of your brain. It’s attached to the hypothalamus by a stalklike structure. The hypothalamus is a ...

6. What Is a Neuron? Diagrams, Types, Function, and More

   www.healthline.com/health/neurons

   An Easy Guide to Neuron Anatomy with Diagrams. Neurons, also known as nerve cells, send and receive signals from your brain. While neurons have a lot in common with other types of cells, they’re ...

7. First Amendment to the United States Constitution - Wikipedia

   en.wikipedia.org/wiki/First_Amendment_to_the...

   The First Amendment ( Amendment I) to the United States Constitution prevents the government from making laws respecting an establishment of religion; prohibiting the free exercise of religion; or abridging the freedom of speech, the freedom of the press, the freedom of assembly, or the right to petition the government for redress of grievances.

8. LDL Cholesterol: Definition, Risks, and How to Lower It - WebMD

   www.webmd.com/heart-disease/ldl-cholesterol-the...

   Try not to eat things that are high in saturated fat, cholesterol, or simple carbs such as sugar and white flour. Eat more fiber and plant sterols such as margarine or nuts. Regular exercise. The ...

9. Electrocardiogram (EKG or ECG) Tests: Purpose & Types - WebMD

   www.webmd.com/heart-disease/electrocardiogram

   An electrocardiogram, also called an ECG or EKG, is a simple and painless test that measures the electrical impulses of your heart to check for signs of heart disease. It's done through small ...