The longest part of the digestive system, where most of the digestion and absorption takes place.
Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum, which is divided into lobes.
Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and heterotrophically.
The position and acceleration of the head is detected by the inner ear.
Olfactory receptors produce electric signals when stimulated by odours.
The three types of muscle found in the human body are the smooth, the striated and the cardiac muscle.
This animation demonstrates the fine molecular structure and mechanism of muscles.
Neurons transmit electrical signals via chemical and electrical synapses.
The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.
This animation shows the symptoms and treatment of secretory otitis media.
This animation presents the main types of leaves and the differences between monocot and dicot leaves.
A Zeppelin is a type of rigid-framed airship.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
This animation explains transparency and opacity, the principle of radiography, and the light-absorbing properties of materials.
This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.
The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.