A 3D model of the internal human body systems

Facts About The Human Body Systems

Do you know all the human body systems? Discover many facts about the skeletal integumentary system, integumentary system, muscular system, and the important cardiovascular system.

There are many more human body systems you can discover. But let's start with some fun & basic fun facts. Read, and increase your knowledge!

Human Body Systems Trivia Quiz Fun Facts

Fun Fact

Human Body Systems Trivia Quiz

An adult human has 206 bones, but a newborn baby has almost 300 bones in their body. This is because babies have more flexible cartilage (a firm tissue that’s softer than bone) in the body. As the newborn grows, some of the cartilage converts to bones and some bones fuse.

Fun Fact

Human Body Systems Trivia Quiz

It's quite common to shed about 100 hairs a day. When the body drops significantly more hairs each day, it's a medical condition that is called is telogen effluvium. It usually happens after stress, a shock, or a traumatic event.

Fun Fact

Human Body Systems Trivia Quiz

When the spine has no gravity power on it, the vertebra can extend and ease, letting astronauts truly get taller. However, once the astronauts are back on Earth, their original height returns to normal after a few months as the gravity of Earth is working again.

Fun Fact

Human Body Systems Trivia Quiz

Human red blood cells are produced mainly in the bone marrow. They have an average life span of about 120 days.

Fun Fact

Human Body Systems Trivia Quiz

A tendon is a fibrous connective tissue that attaches muscle to bone. They are important for the movement ability by transferring the contraction energy produced by the muscles to the bone they hold.

Fun Fact

Human Body Systems Trivia Quiz

The kidneys clean & filter about 50 gallons of blood every single day. Around 1/2 to 2/3 of the waste products are transported by the blood and passed out of the body in urine.

Fun Fact

Human Body Systems Trivia Quiz

The food we eat is digested in the small intestine. It is softened by the juices, and the water, minerals, and vitamins are absorbed back into the blood in the colon of the large intestine. The intestine pushes the food forward to allow more digestion.

Fun Fact

Human Body Systems Trivia Quiz

AB negative is the rarest of the eight main blood types and just 1% of donors have it. The human body has four main blood groups (types of blood) – A, B, AB, and O. The human blood type and group are determined by the genes inherited from parents.

Fun Fact

Human Body Systems Trivia Quiz

The crystals help the human body to be sensitive to gravity and help to stand straight. If the ear is injured, the crystals can move to another part of the ear. If they fall out into the ear canal, they can cause dizziness.

Fun Fact

Human Body Systems Trivia Quiz

About 60% of the human adult body is made out of water. There are organs such as the brain and heart that are made of 73% water. Surprisingly (or not), the skin contains 64% water.