Blood is a remarkable and essential fluid that courses through our veins, sustaining life and maintaining the delicate balance within our bodies. Composed of red and white blood cells, platelets, and plasma, blood serves as a lifeline, transporting oxygen, nutrients, hormones, and immune cells to every corner of the body. Beyond its vital role in nourishing and protecting our cells, blood plays a pivotal role in regulating body temperature and maintaining pH balance.

1. There are four main blood types.

Did you know there are four main blood types – A, B, AB, and O?

There’s something called the RH factor. The RH factor, short for Rhesus factor, is a protein that can be present on the surface of red blood cells. If your blood has it, you’re positive (+), and if not, you’re negative (-).

So, when doctors or nurses talk about blood types, they might say A+, B-, or AB+.

2. Red blood cells deliver oxygen to your body.

Red blood cells are essential components of our blood that play a crucial role in transporting oxygen throughout the body.

Shaped like tiny, flexible disks, they contain a special protein called hemoglobin, which binds to oxygen in the lungs and releases it in tissues and organs. This oxygen delivery process is vital for our cells to produce energy and perform their functions effectively.

As the red blood cells circulate through the bloodstream, they ensure a continuous supply of oxygen, contributing to the overall well-being and functionality of the body.

Find out more about how blood cells work!

3. White blood cells protect our body.

White blood cells are like the superheroes of our body. They are tiny, powerful defenders that work together to keep us healthy.

Their main job is to protect us from germs and other invaders that can make us sick. Think of them as the guardians of our body, always on the lookout and ready to fight off any bad guys that might try to harm us.

Whether we have a small cut or a big cold, these amazing white blood cells are there to keep us safe and help us feel better.

Learn how our body protects us with Professor Hallux!

4. Platelets stop the bleeding!

These tiny cell fragments are crucial for stopping bleeding when we get a cut or injury.

When we have a wound, platelets quickly gather and create a plug to seal the area, preventing excessive bleeding. They release special substances that help the blood to clot, forming a protective barrier over the injured area. (A scab!)

Platelets are our natural healers, ensuring that our bodies can recover and stay intact even after minor injuries.

5. Plasma is packed with nutrients, hormones and proteins.

Plasma is a bit like a liquid gold that carries everything our body needs to stay healthy. This yellowish fluid is mostly made up of water, but it’s also packed with nutrients, hormones, and proteins.

Plasma delivers nutrients to cells, removes waste products, and helps maintain a balance of important substances.

It also plays a critical role in the body’s immune system by carrying antibodies that fight off infections.

So, while red and white blood cells get a lot of attention, plasma quietly ensures that all the vital elements reach their destinations, keeping our bodies running smoothly and in tip-top shape.

6. Blood is red because of hemoglobin.

Imagine your blood is like a team of tiny superheroes working hard inside your body. One of the main heroes in this team is called “red blood cells,” and they have a special job – carrying oxygen to every part of your body.

These red blood cells are like delivery trucks and look red in colour. It’s all because of a special ingredient they carry called “hemoglobin.” Hemoglobin is like a magical colour-changer.

When the red blood cells are traveling through your body without oxygen, they look a bit darker, like a deep red or even a little blue. Here’s the cool part… when they pick up oxygen in your lungs, they turn into bright red superheroes!

7. O-type negative blood can be donated to anyone!

O-type negative blood is often referred to as the universal donor because it can be given to individuals of any blood type.

AB-type positive blood is considered the universal recipient because they can receive blood from any type.

8. Blood is pumped around your body all thanks to your heart.

Blood travels in special tubes called blood vessels that are like roads in your body. There are two main types of blood vessels – arteries and veins.

Arteries are like speedy highways that carry oxygen-rich blood away from your heart to different parts of your body, providing energy and nutrients.

On the other hand, veins are like calm rivers that bring back the blood, now without much oxygen, back to the heart.

The heart is the powerful pump that helps push the blood around, making sure it reaches every corner of your body.

Read Top 10 Facts all about your heart!

9. Adults can donate blood to help others.

When you donate blood, it means you give a small part of yourself to help someone else who might be sick or in an accident.

Sometimes, people can’t make enough blood on their own, or they might lose blood because of an illness or an injury. That’s where blood donors come in!

They give a little bit of their own blood, and it’s carefully collected and stored until it’s needed to help someone feel better. It’s a simple and kind way to share and make a big difference in other people’s lives!

10. Blood helps to regulate body temperature.

Blood helps regulate body temperature by distributing heat.

When the body is too warm, blood vessels dilate to release heat, and when it’s too cold, vessels constrict to conserve heat.