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Respiratory System

Terms in this set (43)

What is within the upper respiratory system?
nose, nasal cavity, mouth, pharynx, and larynx
What is within the lower respiratory system?
Trachea, lungs, bronchial tree
What is the order of the airway?
nose, nasal cavity, mouth, pharynx, larynx, trachea, bronchi, and bronchial network
What is the pharynx?
throat (passage way for food and air)
What is the larynx?
voice box
What is the trachea?
windpipe
What is the airway lined with and what does it do?
cilia that traps microbes and debris
What do the lungs house?
Bronchi and bronchial network, and alveoli sacs
___________ extends into lungs and terminate in millions of alveoli (air sacs).
Bronchi
How many lobes does the right lung have?
3 lobes
How many lobes does the left lung have?
2 lobes
What does the pleural membrane do?
reduce friction between surface when breathing
What are the respiratory muscles?
diaphragm and intercostal muscles
What is the function of the respiratory system?
supply body with oxygen and rid body of carbon dioxide
Where does the exchange of gasses occur?
alveoli
Respiratory system filter air?
air is warm and moistened which filters as it passes through nasal
After air passes through the pharynx move to __________.
larynx
After air passes through the larynx it enters the __________.
trachea
What is the term for maintaining body acid base?
Homeostasis
What happens during breathing?
Diaphragm/intercostal will contract to expand the lungs
What happens during inspiration/inhalation?
diaphragm contacts and moves down. (increase size of chest)
_______________ muscles contract ribs expand which increase chest cavity.
intercostal
What happens when the Diaphragm-intercostal relax?
chest decrease
What does expiration mean?
breathing out
What does the medulla oblongata do?
1. controls breathing
2. monitors levels of carbon dioxide in blood
3. signals breathing rate to increase when levels too high of carbon dioxide
During contraction the diaphragm _________________.
decreases in alveolar pressure
___________ is a double layered membrane that lines the lungs
Pleura
Largest to smallest in diameter?
trachea --> bronchi --> bronchioles
Mechanical process of normal breathing during expiration?
Diaphragm relaxes and moves upward, while intercostal muscles relax and ribs move downward
What is tidal volume?
volume of air with normal breathing
Exhibit an increase in lung compliance?
emphysema
What is produced by the lungs for the purpose of reducing surface tension?
surfactant
Sequence of air inhaled?
nasal cavity -> pharynx -> larynx -> trachea -> bronchi -> bronchioles
What is the exchange of oxygen and carbon dioxide across the alveolar membrane?
diffusion
What structure prevents food from entering the respiratory system?
epiglottis
What is the term for movement of air in and out of the lungs?
Ventilation
Voluntary holding breath will?
innate reflex of breathing due to increase carbon dioxide levels
Lungs with low level of compliance?
stiff lungs require extra work to accomplish normal breathing
What is the function of pulmonary surfactant?
prevent lung collapse and reduce surface tension, and increase in lung compliance
Which organ uses hair to filter out particles that try and enter the lungs?
nose
______________ occurs between the lungs and blood
external respiration
_____________ occurs between the blood and tissues
internal respiration
What happens during internal respiration?
oxygen is exchanged for carbon dioxide in circulation
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