Jawaban:

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 brain uses over a quarter of the oxygen used by the human body.

9. The brain of an adult human weighs around 3 pounds (1.5 kg). Although it makes up just 2 per cent of the body’s weight, it uses around 20 per cent of its energy.

10. If you smoothed out all of the wrinkles in your brain, it would lay flat the size of a pillowcase.