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A&P1-12 Respiratory

Ch 12: Respiratory System

TermDefinition
Alveoli Tiny air sacs in the lung at which gas exchange takes place. (blood flow exchanges oxygen & carbon dioxide)
Bronchial tree Series of ever-decreasing-size tubes branching form the bronchi and ending with bronchioles in the lungs
Chronic obstructive pulmonary disorder (COPD) Disorders that cause a long-term decrease in ventilation of the lungs
Compliance Measurement of how well the lungs can expand and return to shape
Expiration Movement of air out of the lungs
Functional residual capacity (FRC) The amount of air remaining in the lungs after the expiration of a normal breath at rest
Gas exchange The movement of oxygen and carbon dioxide that occurs between capillary blood and the alveoli in the lungs and between capillary blood and the tissues of the body
Gas transport The movement of gases in the blood to and from the lungs and tissues
Inspiration Movement of air into the lungs
Inspiratory reserve volume (IRV) The amount of air that can be forcefully inspired beyond the amount inspired in a normal breath at rest
Partial pressure The amount of pressure an individual gas contributes to the total pressure of a mixture of gases
Pharynx Throat. An area that is divided into 3 sections based on location and anatomy (the nasopharynx, the oropharynx, the laryngopharynx)
Pneumothorax **No per instructor** A condition in which air is introduced in the pleural cavity between the pleural membranes; commonly called a collapsed lung
Respiratory membrane **No per instructor** A membrane that is composed of a thin layer of water with surfactant in the alveoli, a single squamous cell alveolar wall, and a single cell capillary wall and across which gas exchange takes place in the lung
Spirometry Measurement of lung volumes and capacities
Surfactant Fluid secreted by great alveolar cells in the lungs that reduces the surface tension of water
Tidal volume (TV) The amount of air moved in a normal breath (inspired or expired) at rest
Ventilation Airflow to the lungs
Ventilation-perfusion coupling The matching of airflow to blood flow in the lungs
Vital capacity (VC) The maximum amount of air that can be moved
Created by: teribere