Human respiratory system | Description, Parts, Function, & Facts ...
Dec 17, 2024 · Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide. The major organs of the respiratory system include the nose, pharynx, larynx, trachea, bronchi, lungs, and diaphragm.
Human respiratory system - Mechanics, Lungs, Airways | Britannica
Dec 17, 2024 · Human respiratory system - Mechanics, Lungs, Airways: Air moves in and out of the lungs in response to differences in pressure. When the air pressure within the alveolar spaces falls below atmospheric pressure, air enters the lungs (inspiration), provided the larynx is open; when the air pressure within the alveoli exceeds atmospheric pressure ...
Respiratory system | Definition, Organs, Function, & Facts
respiratory system, the system in living organisms that takes up oxygen and discharges carbon dioxide in order to satisfy energy requirements. In the living organism, energy is liberated, along with carbon dioxide, through the oxidation of molecules containing carbon.
Components of the human respiratory system | Britannica
respiratory system, Organ system involved in respiration. In humans, the diaphragm and, to a lesser extent, the muscles between the ribs generate a pumping action, moving air in and out of the lungs through a system of pipes (conducting airways), divided into …
Human respiratory system - Circulation, Metabolism, Oxygen
Dec 17, 2024 · Human respiratory system - Circulation, Metabolism, Oxygen: The interplay of respiration, circulation, and metabolism is the key to the functioning of the respiratory system as a whole. Cells set the demand for oxygen uptake and carbon dioxide discharge, that is, for gas exchange in the lungs.
Human respiratory system - Lungs, Airways, Oxygen | Britannica
Dec 17, 2024 · Human respiratory system - Lungs, Airways, Oxygen: The lung is parted into two slightly unequal portions, a left lung and a right lung, which occupy most of the intrathoracic space.
Human respiratory system - Control, Lungs, Airway | Britannica
Dec 17, 2024 · An important characteristic of the human respiratory system is its ability to adjust breathing patterns to changes in both the internal milieu and the external environment. Ventilation increases and decreases in proportion to swings in carbon dioxide production and oxygen consumption caused by changes in metabolic rate.
Human body systems | Muscle, Skeletal, Respiratory, Circulatory ...
The respiratory, circulatory, renal, and digestive systems likewise are interconnected, working together to supply oxygen and blood to tissues, remove wastes, and break down and utilize nutrients. Learn more about these amazing systems through our human body interactive.
Human respiratory system - Lungs, Airways, Oxygen | Britannica
Dec 17, 2024 · Human respiratory system - Lungs, Airways, Oxygen: The energy expended on breathing is used primarily in stretching the lung–chest system and thus causing airflow. It normally amounts to 1 percent of the basal energy requirements of the body but rises substantially during exercise or illness.
Human respiratory system - Chemoreceptors, Lungs, Airways
Dec 17, 2024 · Human respiratory system - Chemoreceptors, Lungs, Airways: One way in which breathing is controlled is through feedback by chemoreceptors.