When producing sound, the vocal cords are vibrated by the air flowing out of the lung.
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Producing speech requires the synchronized operation of several cortical centers.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
During swallowing food travels from the mouth cavity into the stomach.
This animation explains the most important characteristics of waves through sound waves.
Smoking severely damages the respiratory system, it may cause COPD or lung cancer.
The guitar is a plucked string instrument available in various shapes.
In loudspeakers sound waves are generated by electromagnetic induction.
Taste receptors convert chemical stimuli into electric signals.
Olfactory receptors produce electric signals when stimulated by odors.
Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.
An important endocrine gland producing hormones that affect metabolism and the calcium balance of the body.
Waves play an extremely important role in many areas of our lives.
Humans have 4 types of teeth: incisors, canines, premolars and molars.
The ribs, the sternum and the spinal column form the skeleton of the chest.
Careful tooth brushing is an important part of oral hygiene.