Anatomy

What makes your eyes red in the pool?

What makes your eyes red in the pool?

If you dive a lot in the pool and open your eyes, eventually they will turn a little red and sting slightly. The popular reason given for this fact is the chlorine concentration of the water.

What is the probability of a woman getting pregnant?

What is the probability of a woman getting pregnant?

Let’s imagine that a healthy couple decides to have a sexual relationship. What would be the estimated probability that this sexual act would end in pregnancy?

The tongue does not capture the flavors as you think

The tongue does not capture the flavors as you think

The famous “gustatory map” or “tongue map”, in which we can locate different regions of the tongue responsible for registering different flavors, is not true.

Did you know that when children are asleep their bones are growing?

Did you know that when children are asleep their bones are growing?

Specifically, 43% of babies experienced a small “spurt” at times when there was an “extra” or unusual nap, and one in five also grew at each period in which they slept an hour more than usual.

Did you know that the skin of the platypus is fluorescent?

Did you know that the skin of the platypus is fluorescent?

The platypus (Ornithorhynchus anatinus) is a species of semi-aquatic mammal endemic to eastern Australia and the island of Tasmania. The unusual appearance of this mammal (egg-laying, poisonous, with a duck-billed snout, beaver tail, and otter feet) puzzled European naturalists when they first encountered it, and was even considered by some to be as an elaborate forgery

The largest object removed from a human skull

The largest object removed from a human skull

The case of Phineas Cage is a classic of neuroscience: A bar weighing five kilos, more than a meter long and 2.5 centimeters thick went through his head, entered his left cheek and exited through the top of the skull propelled by a gunpowder explosion.

This is the primate with the most fingers: it has twelve

This is the primate with the most fingers: it has twelve

The ayeyee (Daubentonia madagascariensis) is a nocturnal lemur endemic to Madagascar that has an extra pair of “pseudothumbs”, giving it twelve fingers.

Why do we have black, brown, blue or even violet eyes?

Why do we have black, brown, blue or even violet eyes?

Despite the fascination that the different colors of human eyes cause us, the underlying explanation is actually quite simple. Eye color is due to two types of pigment: eumelanin (brown-black) and phenomelanin (red).

Human teeth are almost as hard as diamonds.

Human teeth are almost as hard as diamonds.

Although the hardness of the teeth leads some people to believe that they are bones, the truth is that they are not. Simply, they include in their composition a hard and resistant material in more proportion than other parts of the human body.