Credits
NARRATION Tom Wilson
PRODUCER Speranta TV
EXECUTIVE PRODUCER Andrei Badulescu
GRAPHICS/ANIMATION Andrei Badulescu/3D BADU Cristiana Apostol/Cinesound Europe
SOUND DESIGN Valentin Bogdan, Laurentiu Bugan
NARRATION TEXT Ovidiu Tudor
DIRECTOR Attila Peli
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CONSULTANTS Stelian Anghel, Ovidiu Tudor, Daniel Mihai, Alin Holban, Florin Ghetu, Bianca Catargiu, Razvan Mihalcea, Bogdan Popa
EDITING Attila Peli
MUSIC Marcozannone
SPECIAL THANKS Andreea Paun, Irina Anghel, Florin Ghetu, Aritina Barbulescu, Cristian Magura, Cristina Cuncea, Mihai Bolonyi, Costin Banica, Petrica Cristescu, AnaMaria Lupu, Dorin Aiteanu
EDITING Attila Peli
MUSIC Marcozannone
SPECIAL THANKS Andreea Paun, Irina Anghel, Florin Ghetu, Aritina Barbulescu, Cristian Magura, Cristina Cuncea, Mihai Bolonyi, Costin Banica, Petrica Cristescu, AnaMaria Lupu, Dorin Aiteanu
COPYRIGHT SPERANTA TV 2018
Transcript
Your heart is an extremely complex pump that transports oxygenated blood, as well as nutrients, throughout your body. If she would stop beating, you would die in just a few minutes. So, a system that keeps you alive in extreme situations, would be extremely useful to you. Miraculously, this system exists.
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Unlike all other muscles that need a brain impulse to contract, your heart has an inherent functioning mechanism. Thus, at the level of the right atrium, there is a cell group that forms the Sino-Atrial Node, which has the ability to self-stimulate and automatically generate an electrical impulse that is transmitted to other heart cells. The Sino-atrial node is the natural pacemaker of the heart, determining the normal heartbeat rate. Basically, your heart will continue to beat, without any interfering of your brain.
However, if the Sino-Atrial Node ceases its function, your heart has two other back-up systems at its disposal: the Atrio-Ventricular Node and the His-Purkinje System. In addition to their major role of modulating and delaying rushed impulses, securing your heart from excesses, these systems will initiate, if necessary, their own contractions, allowing your heart to continue beating.
Despite its independence, your heart needs control and guidance from the brain to be able to respond to the different challenges. For example, while doing intense physical exercise, your heart needs to exceed the frequency given by its independent pace-maker, and after exercise needs to return to normal frequency. Your nervous system takes care of this, through two of its components: the sympathetic vegetative nervous system that accelerates your heart rate, while the parasympathetic vegetative nervous system has the opposite effect. And everything happens in complete harmony, so that you have a good heart and you are kept alive.
However, if the Sino-Atrial Node ceases its function, your heart has two other back-up systems at its disposal: the Atrio-Ventricular Node and the His-Purkinje System. In addition to their major role of modulating and delaying rushed impulses, securing your heart from excesses, these systems will initiate, if necessary, their own contractions, allowing your heart to continue beating.
Despite its independence, your heart needs control and guidance from the brain to be able to respond to the different challenges. For example, while doing intense physical exercise, your heart needs to exceed the frequency given by its independent pace-maker, and after exercise needs to return to normal frequency. Your nervous system takes care of this, through two of its components: the sympathetic vegetative nervous system that accelerates your heart rate, while the parasympathetic vegetative nervous system has the opposite effect. And everything happens in complete harmony, so that you have a good heart and you are kept alive.
