CategoryBody Trivia

Human Body and Anatomy Trivia Questions and Answers

Human Body and Anatomy Trivia Questions and Answers

Do you think you know everything about the human body? Do you know about the body’s essential organs, brain functions, or digestive processes? Learn more about the anatomy of the human body as well as parts such as the bones, eyes, muscles, and heart. Challenge yourself or play with friends with the best collection of the fascinating and amazing medical facts and trivia.

Why our nails turn blue during winter?

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Why our nails turn blue during winter?
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Nails turn blue in cold weather because our blood vessels constrict in response to a low temperature to minimize heat loss.
This results in less supply of RBC (which carry oxygen) and our blood appears blue. It is more apparent in nails due to their transparency.

Why coffee helps us stay awake?

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Why coffee helps us stay awake?
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Caffeine binds to the adenosine receptor, but because to a nerve cell, caffeine looks like adenosine it doesn't slow down the cell's activity as adenosine would.
Coffee helps us stay awake as it binds to receptors for adenosine in our brain. Instead of slowing down because of the adenosine’s effect, the nerve cells speed up.

How does an iris scanner work?

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How does an iris scanner work?
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Iris scanner works on the principle of uniqueness of everyone’s iris. Iris are unique due to the amount of melanin content in them.
Crypts and ridges in iris are all unique and very little affected by genes. Iris scanner functions by sending a beam of infrared light that bounces back to it with certain frequency which is then decoded by a processing unit.

What is the most important finger of your hand?

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What is the most important finger of your hand?
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The little finger.
Of all your fingers, you might think your pinky is the most useless. But your little finger is particularly important in a firm grip, and hand surgeons agree if you’re going to lose one, the index finger is the best one to lose as by losing your little finger, your grip strength is reduced by 50%.

How do our cells prepare for their death?

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How do our cells prepare for their death?
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If cells are no longer needed, they commit suicide by activating an intracellular death program.
Cells throughout their life cycle start to lose connections with other cells, and then our immune system works out to kill those cells. This is known as “apoptosis” from a Greek word meaning “falling off,” as leaves from a tree.

What is the dangerous face triangle?

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What is the dangerous face triangle?
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Dangerous triangle of the face is an area of the face where loose areolar tissues are present containing emissary veins which are directly linked to the brain.
It’s dangerous, as any infection that tends to spread throughout this area has a very high chance of infecting the brain.

What is the barrier between the middle ear and the outer ear?

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Body Trivia barrier middle ear outer ear
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The membrane of the tympanic membrane.
The sound-conducting mechanism has two parts, the outer ear consists of an ear and an ear, and the middle ear, the tympanic membrane. The air space of the middle ear is connected to the nose with the auditory tube and the cells of the dusky air, which cover the chain of axial, hammer, stirrup and anvil.

What structure binds muscle to the bone?

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What structure binds muscle to the bone?
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Tendon.
The tendon (or tendons) are a strong band of fibrous connective tissue, which usually connects the muscles with the bone and can withstand tension. The tendons are similar to ligaments, except that the ligaments attach one bone to the other.

Which finger has the fastest growing nail?

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Which finger has the fastest growing nail?
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Middle finger.
On average, nails grow about one-tenth of an inch per month. The fastest nail grows on the middle finger. Slower nail growth – miniature. Frozen nails grow faster than nails that do not cut regularly.