The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
The withdrawal reflex is a spinal reflex that ensures moving away from potentially damaging stimuli.
The curvature of the lens of the eye changes when we look at a distant or at a near object, to...
The cause of a heart attack is the blockage of a coronary artery. It is one the most common...
Humans have 4 types of teeth: incisors, canines, premolars and molars.
This animation demonstrates the development of the human embryo and fetus.
Concave and convex lenses are used for the correction of shortsightedness and farsightedness.
The two main parts of the central nervous system, the brain and the spinal cord are protected by...