Some interesting facts about blood found in humans and animals. Blood is the life-giving and an incredibly important bodily fluid that carries oxygen and various nutrients to our body cells.
Read below for 14 interesting facts about blood.
- One ounce (29.57 Milliliters) of blood contains 150 billion red blood cells.
- A pint of blood contains 2.4 trillion red blood cells.
- A human body produces 17 million red blood cells per second. If stress is needed, the body can produce up to 7 times that amount. (Up to 119 million red blood cells in every second).
- Blood makes up about 7% of human body weight.
- The size of a red blood cell is about 7 microns. (1 micron is 1 millionth of a meter).
- It takes only 20 to 60 seconds for a drop of blood to travel through the heart, through your body, and back again to the heart.
- Blood consists of red blood cells, white blood cells, and platelets.
- Red blood cells develop in the bone marrow and circulate in the body for about 120 days.
- Red blood cells have the important function of carrying oxygen around the body. They also contain a protein called haemoglobin. Haemoglobin contains iron which together with haemoglobin and oxygen gives human blood red colour.
- Cows have 800 or possibly more blood types.
- The most common blood type in the United States is O positive (39% of the population), while the least common blood type is negative only (0.5% of the population).
- In the United States, patients use about 32,000 pins every day.
- Not all are blood red. Crabs have blue blood. Earthworms and lychees have green blood. Many invertebrates, such as starfish, have clear or yellowish blood.
- Every 5 minutes, a patient from the Ozark area hospital gets a blood transfusion supplied by the CBCO donor.