wdechu

Wdechu is the act of inhaling air into the lungs, a fundamental phase of respiration. During inhalation, the diaphragm contracts and moves downward, while the external intercostal muscles lift the rib cage. This expansion increases the volume of the thoracic cavity and lowers the air pressure inside the lungs, drawing air through the airways into the alveoli. Oxygen passes from the alveoli into the bloodstream, and carbon dioxide moves from the blood to the alveolar air to be expelled during exhalation.

Breathing is regulated by neural and chemical mechanisms. The brainstem’s respiratory centers generate rhythmic impulses that drive inhalation, while chemoreceptors in the carotid bodies and brainstem monitor carbon dioxide and hydrogen ion levels to maintain blood pH and gas concentrations. Voluntary control from the cerebral cortex allows deliberate breathing changes, such as deep breaths or breath-holding, when needed.

Common measurements related to wdechu include tidal volume (the amount of air inhaled at rest), respiratory rate, and minute ventilation (tidal volume multiplied by rate). Lung capacity terms such as vital capacity describe the maximum amount of air that can be moved during deep inhalation and exhalation.

Clinically, abnormal inhalation can indicate respiratory disorders such as asthma, chronic obstructive pulmonary disease, or ventilation–perfusion issues. Proper breathing techniques are utilized in medical rehabilitation, sports training, singing, and aquatic activities to optimize oxygen uptake and carbon dioxide removal.