Archive for November 13th, 2006
Hearing
Monday, November 13th, 2006The frequencies of sound that a young person can hear, before aging has affected the ears, are generally said to be between 20 and 20000 cycles per second. However, the sound range depends to a great extent on intensity. If the intensity is only – 60 decibels, the sound range is 500 to [...]
Function Of The Ear
Monday, November 13th, 2006Anatomically, an ear is a vertebrate organ of hearing responsible for sensing and collecting sounds as well as maintaining equilibrium. The ear is divided into three components, the outer ear (pinna), the middle ear, and the inner ear.
Sound detection, hearing allowance, and balance maintenance are the main functions of the ear.
The Mechanics of [...]
No Appetite
Monday, November 13th, 2006The appetite is the desire to eat food, felt as hunger. Appetite exists in all higher lifeforms, and serves to regulate adequate energy intake to maintain metabolic needs. It is regulated by a close interplay between the digestive tract, adipose tissue and the brain. Decreased desire to eat is termed anorexia, while polyphagia (or “hyperphagia”) [...]
