Healthcare Basics
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How Does Your Body Work?

Which organ controls blood sugar? What does the thyroid do? Test your knowledge about your body's inner workings with this quiz.

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How Does Your Body Work?
How Does Your Body Work?
Question 1 of 20 Correct

The nervous system controls which of the following senses?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. In addition, the nervous system -- made up of the brain, spinal cord and nerves -- controls your sense of smell and your sense of touch.

How Does Your Body Work?
Question 2 of 20 Correct

What gland in the body is responsible for managing breast milk production?

Correct! Sorry, that’s incorrect.

The correct answer is: Part of the endocrine system, the pituitary gland manages breast milk production. It is located at the base of the brain deep in the center of the skull. The pituitary gland sends signals to other glands in the endocrine system telling them to produce thyroid hormone, cortisol, estrogen, testosterone and other hormones.

How Does Your Body Work?
Question 3 of 20 Correct

True or false: The ovaries and testes are part of the endocrine system.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. They are part of both the endocrine and the reproductive system.

How Does Your Body Work?
Question 4 of 20 Correct

What organ helps control blood sugar levels in your body?

Correct! Sorry, that’s incorrect.

The correct answer is: The pancreas, a gland located behind the stomach and in front of the spine, produces digestive juices and hormones that help control blood sugar levels. It is crucial to helping the body store and use energy from food after it aids with digestion.

How Does Your Body Work?
Question 5 of 20 Correct

The pancreas is part of what system of the body?

Correct! Sorry, that’s incorrect.

The correct answer is: The pancreas is actually part of two systems, the endocrine system and the digestive system. The endocrine system regulates growth, sexual development and function, metabolism and mood.

How Does Your Body Work?
Question 6 of 20 Correct

What is the main function of your thyroid gland?

Correct! Sorry, that’s incorrect.

The correct answer is: The main function of the thyroid -- part of the endocrine system -- is to regulate metabolism.

How Does Your Body Work?
Question 7 of 20 Correct

Which of the following is a part of the respiratory system?

Correct! Sorry, that’s incorrect.

The correct answer is: Think of your respiratory system as an upside-down tree. When air enters your body, it goes down your trachea. That's the trunk. Then it quickly divides into two airways (the tree's limbs). Those are your bronchial tubes. Then, like tree branches, those airways break off into four, then eight, then hundreds of thousands of little airways in each lung. Those are your bronchi. At the end of each airway are tiny sacs called alveoli. The last part involved in breathing is the musculature that supports your lungs--the diaphragm. This large muscle pulls air down into your lungs.

How Does Your Body Work?
Question 8 of 20 Correct

Your kidneys are part of what system of the body?

Correct! Sorry, that’s incorrect.

The correct answer is: The urinary system is made up of the kidneys, bladder, ureters and urethra.

How Does Your Body Work?
Question 9 of 20 Correct

Which of the following is a function of the kidneys?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above are functions of the kidneys. When they fail, the breakdown can have body-wide consequences.

How Does Your Body Work?
Question 10 of 20 Correct

True or false: You can live a normal life with just one kidney.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. About 1 in 500 people are born with only one kidney, usually because the other one failed to form normally.

How Does Your Body Work?
Question 11 of 20 Correct

What does the gallbladder do?

Correct! Sorry, that’s incorrect.

The correct answer is: The gallbladder, which is located under the liver, stores and concentrates bile, a fluid that helps the body digest fats. After a meal, the gallbladder contracts and releases bile through the common bile duct into the small intestine.

How Does Your Body Work?
Question 12 of 20 Correct

True or false: You can't live without your gallbladder.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. You can live without your gallbladder because your body can digest food without it. Once your gallbladder is removed, bile flows directly from your liver, where it's produced, to the small intestine. A small percentage of people who have had gallbladders removed experience loose stools or diarrhea.

How Does Your Body Work?
Question 13 of 20 Correct

What is the primary function of your spleen?

Correct! Sorry, that’s incorrect.

The correct answer is: The primary role of your spleen--which is part of the immune system--is to filter your blood. Special white blood cells sift the blood as it flows through the spleen to pull out particles and microbes, protecting us from infection. The spleen also removes old or damaged blood cells.

How Does Your Body Work?
Question 14 of 20 Correct

True or false: You can live without your spleen

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. You can live fairly normally without a spleen, but your risk of infection becomes higher. If you get infected, the infection can be more life-threatening.

How Does Your Body Work?
Question 15 of 20 Correct

The main work of digestion takes place where?

Correct! Sorry, that’s incorrect.

The correct answer is: The main work of digestion takes place in the small intestine, which is a remarkable 21 feet long. The small intestine breaks down fats, starches, and proteins into fatty acids, simple sugars, and amino acids, which it can then absorb.

How Does Your Body Work?
Question 16 of 20 Correct

What makes up the longest portion of the large intestine?

Correct! Sorry, that’s incorrect.

The correct answer is: The colon--which is part of the digestive system--is the longest part of the large intestine, which is a tube-like organ connected to the small intestine at one end and the anus at the other. The colon removes water and some nutrients and electrolytes from partially digested food. The remaining material, solid waste called stool, moves through the colon to the rectum and leaves the body through the anus.

How Does Your Body Work?
Question 17 of 20 Correct

True or false: If you cut out part of your liver it will regenerate.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. A liver reduced to one quarter of its size can fully regenerate itself.

How Does Your Body Work?
Question 18 of 20 Correct

True or false: Milk is the best thing you can drink for healthy bones.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. Both Dr. Oz and Michael Roizen, MD, tout the bone-friendly attributes of kefir, a fermented dairy drink. What's kefir got that's so great? Vitamin K2. It helps prevent the death of osteoblasts -- cells that are responsible for forming new bone. Vitamin K2 also escorts calcium out of your blood and into your bones so it can do its job of making bones stronger.

How Does Your Body Work?
Question 19 of 20 Correct

True or false: The skeletal system is only made up of your bones.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. Your bones, cartilage and joints collectively make up the skeletal system.

How Does Your Body Work?
Question 20 of 20 Correct

What organs can you donate while you're still alive?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. It is now possible for a living person to donate a kidney, a portion of the liver, a portion of a lung and, in some rare instances, a portion of the pancreas.

How Does Your Body Work?
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How Does Your Body Work?
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How Does Your Body Work?
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