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Respiratory system

Respiratory system

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

Biology

Keywords

respiratory system, respiration, breathing, inhalation, exhalation, lung, chest, respiratory muscles, airway, bronchus, bronchi, alveolar sac, gas exchange, pulmonary circulation, red blood cell, oxygen binding, oxygen, carbon dioxide, model lung, trachea, larynx, nasal cavity, diaphragm, intercostal muscles, capillary, respiratory surface, human, biology

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Scenes

  • - Gas exchange takes place through the walls of the capillaries of the pulmonary circuit. Carbon dioxide is released from the blood into the alveolar sacs, while oxygen is absorbed into the blood. Oxygen is transported in the blood by the hemoglobin in red blood cells.

  • - Gas exchange takes place through the walls of the capillaries of the pulmonary circuit. Carbon dioxide is released from the blood into the alveolar sacs, while oxygen is absorbed into the blood. Oxygen is transported in the blood by the hemoglobin in red blood cells.

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

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

Carbon dioxide (CO₂) (beginner)

Colorless, odorless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Circulatory system

Systemic circulation carries oxygenated blood from the heart to the body, while pulmonary circulation carries oxygenated blood from the lungs to the heart.

Deep vein thrombosis and pulmonary embolism

A blood clot that forms in the deep veins of the lower limbs can cause a fatal pulmonary embolism if they enter the lungs.

How do fish breathe?

Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.

Oxygen (O₂) (beginner)

A colorless, odorless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

The bones of the thorax

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

The heart

The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.

The human blood

Human blood consists of blood cells and plasma.

The upper gastrointestinal tract

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

The urinary system

The urinary system serves for the removal of harmful and useless materials from the body.

Carbon dioxide (CO₂) (intermediate)

Colorless, odorless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Oxygen (O₂) (intermediate)

A colorless, odorless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

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