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27 terms

Respiratory System (Med 165)

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Ventilation (External Respiration)
The movement of air through the conducting passages between the external environment and the lungs
Internal Respiration
The exchange of oxygen and carbon dioxide between the air in the lungs and the blood in the surrounding capillaries
Cellular Respiration
The exchange of gases between tissue cells and the blood in the tissue capillaries
Pleura
Membranes that cover the lungs
Trachea
Medical term for "windpipe"
Larynx
Medical term for "voice box"
CO2
Abbreviation for carbon dioxide, a gas that is considered a metabolic waste product that we expell through breathing
Diaphragm
A large dome-shaped muscle that divides the thoracic and abdominal cavities. Its contraction aids the thoracic muscles in moving air through breathing passages
Surfactant
A lipoprotein substance that reduces the surface tension of the alveoli so they do not adhere and collapse
Alveoli
Thin tissued air sacs where oxygen and carbon dioxide diffuse
Left Bronchus
Longer, narrow, and less vertical than the right bronchus
Right Bronchus
Shorter, wider, and more vertical than the left bronchus. Easier for particles to enter than the left side
O2
Abbreviation for "oxygen". A gas taken from the atmosphere into the lungs. it is necessary for cellular metabolism to occur.
Epiglottis
Long leaf-shaped structure that prevents food from entering the respiratory system
Pharynx
Medical term for "throat"
Glottis
The opening between the vocal cords
True Vocal Cords
Consist of the lower folds of the larynx
Eupena
The medical term for "normal, regular breathing"
Dyspena
The medical term for "difficult, labored breathing"
Tidal Volume
The amount of air moving in and out of the lungs with each breath
Cilia
Hair like structures of the respiratory system that propel mucus with trapped particles toward the pharynx
Mediastinum
The open area between the lungs that contains the heart
Upper Respiratory System
Nose, pharynx, larynx
Lower Respiratory System
Trachea, Bronchial Tree (bronchi, bronchioles, alveoli), lungs
Inspiration
The active phase of ventilation. Taking in air or "inhaling"
Phren
The word part meaning "diaphram"
Trache/o
The word part meaning "windpipe"