Fun facts about the human body
1. Adult lungs have a surface area of around 70 square metres.
2. Your left and right lungs aren’t exactly the same. The lung on the left side of your body is divided into two lobes while the lung on your right side is divided into three. The left lung is also slightly smaller, allowing room for your heart.
3. Human lungs contain almost 1,500 miles of airways and over 300 million alveoli.
4. An average person breathes in around 11,000 litres of air every day
5. Your nose and ears continue growing throughout your entire life.
6. Your sense of smell is around 10,000 times more sensitive than your sense of taste.
7. Around 80 per cent of what we think is taste is actually smell. Flavour, is a combination of taste and smell perception.
8. The outer layer of your skin is the epidermis, it is found thickest on the palms of your hands and soles of your feet (around 1.5 mm thick).
9. A large amount of the dust in your home is actually dead skin. Humans shed about 600,000 particles of skin every hour.
10. Humans have a stage of sleep that features rapid eye movement (REM). REM sleep makes up around 25 per cent of total sleep time and is often when you have your most vivid dreams.
11. An eyelash lives for about 150 days before it falls out.
12. The smallest bone found in the human body is located in the middle ear. The staples (or stirrup) bone is only 2.8 millimetres long.
13. The femur (thigh bone) is the longest bone in the human body.
14. When listening to music, your heartbeat will sync with the rhythm.
15. An healthy adult human heart beats about 75 times on average in a minute