The ear and the mechanism of hearing
The ear converts the vibrations of air into electric signals which are then processed by the brain.
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This animation shows the symptoms and treatment of secretory otitis media.
The position and acceleration of the head is detected by the inner ear.
Taste receptors convert chemical stimuli into electric signals.
Olfactory receptors produce electric signals when stimulated by odours.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
The curvature of the lens of the eye changes when we look at a distant or at a near object, to ensure a sharp image.
The spinal cord is the part of the central nervous system running inside the spinal column from which spinal nerves branch out.
Bones of the lower limbs are connected to the trunk by the pelvis.
Bones of the upper limbs form the pectoral girdle and the arms.
This animation explains the most important characteristics of waves through sound waves.
Producing speech requires the synchronised operation of several cortical centres.
This animation introduces the most important organ systems of the human body.
The knee joint is made up by the femur, the tibia and the kneecap.
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum, which is divided into lobes.
The reflex triggered by the stretching of the thigh extensor muscle is the patellar reflex.
This animation demonstrates the development of the human embryo and foetus.
The recorder is a woodwind musical instrument, a type of fipple flute.
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum.
Organs that detect signals of the environment or of the body and transmit them to the brain as nerve impulses.
The two main parts of the central nervous system, the brain and the spinal cord are protected by the skull and the spinal column.
Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.
Concave and convex lenses are used for the correction of short-sightedness and far-sightedness.