Human Body

How do we speak?

Speech distinguishes humans from other apes. The physical aspect of speech pertains to the vocal chords, the larynx, the positioning of the tongue and the lips. Each of these plays a vital role in helping humans to speak. Of course, the brain coordinates the movement […]

Why do we blink our eyes?

Continuous process of opening and closing of eyelids is called blinking. A person approximately blinks after every four or five seconds. The first and foremost function of blinking is to spread the lubricant through eyelids and eyelashes. The lubricant is produced within the eyes itself […]