Sisäänhengityksellä

Sisäänhengityksellä refers to the act of inhaling, the process by which air is drawn into the lungs. This fundamental biological process is part of the respiratory cycle. During inhalation, the diaphragm, a large dome-shaped muscle located at the base of the chest cavity, contracts and flattens. Simultaneously, the intercostal muscles between the ribs contract, pulling the rib cage upward and outward. These actions increase the volume of the thoracic cavity, which in turn lowers the pressure inside the lungs relative to the atmospheric pressure outside. Consequently, air flows into the lungs to equalize this pressure difference. The air taken in during inhalation is rich in oxygen, which is then transported to the bloodstream for cellular respiration. The depth and rate of inhalation can vary depending on factors such as physical activity, emotional state, and the body's oxygen needs. Controlled breathing exercises often focus on conscious and deep inhalations to promote relaxation and improve oxygen intake. The term is used in various contexts, including physiology, medicine, and mindfulness practices.