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Voice production

Voice production

When producing sound, the vocal cords are vibrated by the air flowing out of the lung.



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Saistītie vienumi

Cortical organisation of speech

Producing speech requires the synchronised operation of several cortical centres.

Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

The upper gastrointestinal tract

During swallowing food travels from the mouth cavity into the stomach.

Characteristics of sound waves

This animation explains the most important characteristics of waves through sound waves.

Effects of smoking on the lungs

Smoking severely damages the respiratory system, it may cause COPD or lung cancer.


The guitar is a plucked string instrument available in various shapes.

How does it work? - Loudspeaker

In loudspeakers sound waves are generated by electromagnetic induction.

Nose, the mechanism of smelling

Olfactory receptors produce electric signals when stimulated by odours.

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.

The mechanism of taste reception

Taste receptors convert chemical stimuli into electric signals.

Thyroid gland

An important endocrine gland producing hormones that affect metabolism and the calcium balance of the body.

Types of waves

Waves play an extremely important role in many areas of our lives.

Human teeth

Humans have 4 types of teeth: incisors, canines, premolars and molars.

The bones of the thorax

The ribs, the sternum and the spinal column form the skeleton of the chest.

Tooth brushing

Careful tooth brushing is an important part of oral hygiene.

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