HBSF - Two truths and a lie

Set 1

• The heart has four chambers

• The femur is the longest bone in the human body

• Your brain is the only organ that can't feel pain

Answer explanation

Lie: the brain can't feel pain

Truth: while the brain has no pain receptors, it can feel pain through the surrounding tissues if pressure is applied!

Set 2

• The liver can regenerate itself

• Your fingernails and hair keep growing after you die

• The small intestine is longer than the large intestine

Answer explanation

After you die, your skin dehydrates and retracts to expose more nail and hair length!

Set 3

• Your bones are constantly being replaced throughout your life

• The average human body contains enough iron to make a small nail

• Adults have more bones than babies

Answer explanation

Lie: Adults have more bones than babies.
Truth: Babies have around 270 bones at birth, which fuse to form 206 bones in adults.

Set 4

• The left lung is smaller than the right lung to make room for the heart

• Your stomach lining gets replaced every few days to prevent it from digesting itself.

• The appendix has no known function and is just a leftover from evolution.

Answer explanation

Lie: The appendix has no known function and is just a leftover from evolution.

Truth: The appendix plays a role in immune function, particularly in the gut flora balance.

Set 5

• Humans and giraffes have the same number of neck vertebrae.

• The strongest muscle in the human body is the tongue.

• You can live with one lung.

Answer explanation

Lie: The strongest muscle in the human body is the tongue.

Truth: The tongue is versatile and strong, but not the strongest. The jaw muscle (masseter) is considered the strongest by weight.

Set 6

• Blood makes up approx. 7-8% of your total body weight

• Your taste buds are replaced every 10 years

• The smallest bone in the human body is in the ear

Answer explanation

Lie: Your taste buds are replaced every 10 years.

Truth: Taste buds are replaced every 10-14 days, not years.