Pathologies

Compared to other animals, humans' sense of smell is very poorly developed. In humans, the sense of smell appears around 11-15 weeks, during fetal development. The smell emits a “substance” transported in the air (in the form of molecules) which reaches our nostrils . It enters the nose, passing through tiny hairs which filter the molecules which try to penetrate, these are olfactory cilia....

Compared to other animals, humans' sense of smell is very poorly developed. In humans, the sense of smell appears around 11-15 weeks, during fetal development. The smell emits a “substance” transported in the air (in the form of molecules) which reaches our nostrils . It enters the nose, passing through tiny hairs which filter the molecules which try to penetrate, these are olfactory cilia....

The ear is the organ used to capture and intensify sound. It is the seat of the sense of hearing. The inner ear also plays an important role in the balance of the body while still or in motion. There are different types of ear-related problems: Tinnitus : these are “parasitic” noises that a person hears without them actually existing. This may include whistling,...