The ear and the mechanism of hearing
The ear converts the vibrations of air into electric signals which are then processed by the brain.
The eye is one of our most important sense organs. When stimulated by light, electric...
This lesson presents the structure and functioning of the heart and how it can be protected.
How does our body gain access to the vitamins it needs?
This scene summarizes the main organs of the human body.
The adrenal glands are responsible for maintaining homeostasis and producing a rapid...
Bones of the upper limbs form the pectoral girdle and the arms.
This animation demonstrates the fine molecular structure and mechanism of muscles.
The arms are moved by flexor and extensor muscles.