It’s always fun to have a go a trivia questions and quizzes. In this blog post I combine 13 fun questions all about the human body. Answers are at the bottom with some fun facts. How many can you get right?

Question 1 – True or false? Giraffes and humans have the same amount of vertebra in the neck?

Question 2 – What’s the largest organ in the human body?

Question 3 – When might a person show rapid eye movement? (REM)

Question 4 – What is the term for a series of uncontrollable intakes of air caused by sudden spasms of the diaphragm?

Question 5 – What is protected by the cranium?

Question 6 – What makes up 60-70% of human bodyweight?

Question 7 – What is the name of the structural tissue found in the ear, nose and in between the vertebral discs (and in lots of other places)?

Question 8 – Which organ destroys old red blood cells?

Question 9 – Which is the largest bone in the human body?

Question 10 – Do you know the name of the smallest bone in the body, or where it might be found?

Question 11 – What’s the name of the large muscle just beneath the lungs?

Question 12 – What’s the largest human muscle?

Question 13 – Which is the strongest muscle in the human body?

 

How do you think you got on? Answers are below, with some fun facts.

Question 1 – True or false? Giraffes and humans have the same amount of vertebra in the neck? True! Unbelievably, both giraffes and humans have the same amount of bones in their necks. The size of those bones is what is different. This fact demonstrates the flexibility and versatility of spinal structures!

Question 2 – What’s the largest organ in the human body? The largest organ in the body is skin – with a total area of about 20 square feet. The skin protects us from microbes and the elements, helps regulate body temperature, and permits the sensations of touch, heat and cold.

Question 3 – When might a person show rapid eye movement? (REM) When sleeping!

A lot happens in your body while you sleep. While you dip in your slumber, you cycle between REM and non-REM sleep. REM sleep is important because it is the restorative part of our sleep cycle.

Typically, you begin the sleep cycle with a period of non-REM sleep followed by a very short period of REM sleep.

People often associate REM sleep with dreams. While dreams can occur in other deep sleep stages, most dreams occur during REM sleep. Researchers are still trying to learn exactly why people need REM sleep, why we dream, and what purpose our dreams serve. However, some researchers theorize that dreams are the ways in which the brain processes emotions, information, memories, and stress.

Question 4 – What is the term for a series of uncontrollable intakes of air caused by sudden spasms of the diaphragm? Hiccups!

A hiccup is an automatic action (a reflex) that the body can’t control. During a hiccup your diaphragm (the muscle under your lungs that helps you breathe) contracts. Immediately after this the top of your windpipe (your glottis) closes, making the typical ‘hic’ sound.

Most people have bouts of hiccups from time to time. In most cases they start for no apparent reason, last a short while and then stop. Sometimes they are due to:

😆Sudden excitement or emotional stress.
😆A temporary swollen stomach caused by overeating or eating too fast, drinking fizzy drinks, or swallowing air.
😆A sudden change in temperature (very hot or cold food or drinks, a cold shower, etc).
😆Alcohol.
😆Excess smoking.

Question 5 – What is protected by the cranium? The brain! The cranium is more commonly known as the skull. The human skull is the bony structure that forms the head. It supports the structures of the face and forms a cavity for the brain. Like the skulls of other vertebrates, it protects the brain from injury.

Question 6 – What makes up 60-70% of human bodyweight? Water! Water is the body’s most basic medium needed for all biological reactions and makes up to 60-70% of the human body. You’ve heard it before, but let me repeat it: hydration is essential to health.

Make sure you drink plenty of water throughout the day.

Question 7 – What is the name of the structural tissue found in the ear, nose and in between the vertebral discs (and in lots of other places)? Cartilage is a soft component that is mostly found in between the joints of the bones, the rib cage, the ear, the nose, the bronchial tubes and the intervertebral discs

Question 8 – Which organ destroys old red blood cells? The spleen!

The spleen is an organ found in all vertebrates. Similar in structure to a large lymph node, it acts primarily as a blood filter. The word spleen comes from Ancient Greek σπλήν (splḗn).

The spleen plays multiple supporting roles in the body. As stated above, it acts as a filter for blood as part of the immune system. Old red blood cells are recycled in the spleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.

Question 9 – Which is the largest bone in the human body? The femur or thigh bone! The femur bone is the strongest and longest bone in the body, occupying the space of the lower limb, between the hip and knee joints.

Question 10 – Do you know the name of the smallest bone in the body, or where it might be found? Stapes!

Before becoming recognized by the brain, sound waves must enter the auditory canal, go through the tympanic membrane (eardrum), and then enter the middle ear compartment.

Once there, the sound waves vibrate three bones known as the ossicles, which are made up of the malleus, the incus, and the stapes.

Question 11 – What’s the name of the large muscle just beneath the lungs? The diaphragm!

The diaphragm is a sheet of internal skeletal muscle that extends across the bottom of the thoracic cavity. It serves to separate the thoracic cavity, containing the heart and lungs, from the abdominal cavity, and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases and air is drawn into the lungs.

Question 12 – What’s the largest human muscle? Gluteus Maximus!

The largest muscle in the human body is the gluteus maximus, or the buttock muscles, also known as “the glutes.”

These muscles (one on each side) help move the hips and thighs, and keep the trunk of the body upright.

Question 13 – Which is the strongest muscle in the human body? The masseter muscle!

If we define the “muscular strength” as the ability to exert a force on an external object, the masseter or jaw muscle is the strongest muscle in the human body based on its weight.

In human anatomy, the masseter is found in the jaw and is one of the muscles of mastication (chewing). Found only in mammals, it is particularly powerful in herbivores to facilitate chewing of plant matter. The most obvious muscle of mastication is the masseter muscle, since it is the most superficial and one of the strongest.

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