What is the term for air going into the lungs (inhaling)?

Study for the AAMI Certified Associate in Biomedical Technology Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What is the term for air going into the lungs (inhaling)?

Explanation:
Air going into the lungs is called inspiration (inhalation). When you inhale, the diaphragm contracts and moves downward while the external intercostal muscles lift the rib cage, expanding the chest cavity. This increases thoracic volume and lowers the air Pressure inside the lungs below atmospheric pressure, so air flows in until pressure inside matches the outside. Expiration is the reverse, with air leaving the lungs as the chest volume decreases. Ventilation refers to the overall movement of air into and out of the lungs, while perfusion is the flow of blood through the lungs for gas exchange.

Air going into the lungs is called inspiration (inhalation). When you inhale, the diaphragm contracts and moves downward while the external intercostal muscles lift the rib cage, expanding the chest cavity. This increases thoracic volume and lowers the air Pressure inside the lungs below atmospheric pressure, so air flows in until pressure inside matches the outside. Expiration is the reverse, with air leaving the lungs as the chest volume decreases. Ventilation refers to the overall movement of air into and out of the lungs, while perfusion is the flow of blood through the lungs for gas exchange.

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