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Respiratory Lab

physiology 2010

QuestionAnswer
List the respiratory pathway Nose (nasal vestibule)-nasal conchae-pharynx-larynx-trachea-right and left bronchi-bronchioles-lungs
What are the 3 parts of the pharynx? Nasopharynx, Oropharynx, and Laryngopharynx
What covers to laryngopharynx to prevent food from entering the trachea? Epiglottis
What is the job of the nasal conchae? to warm the air and filter with particles with its mucus membrane
The portion of the larynx directly involved in sound production is... the vocal cords
What is the purpose of the trachealis muscle? it allows expansion of the esophagus
What type of epithelium is in the trachea? ciliated pseudostratified epithelium
What is the carina? is the internal ridge where the trachea splits into the right and left bronchi. Also the most sensitive part of the respiratory passage (cough reflex)
What is the order of the bronchi breakdown? Primary bronchi, secondary bronchi, tertiary bronchi, bronchioles, to respiratory bronchioles
Where is the site of gas exchange? in the alveoli
What two types of epithelium are there in the alveoli walls? squamous pulmonary epithelium and septal cells
What do septal cells do? they produce a substance called surfactant which reduces the surface tension of the alveoli and prevents them from collasping
Where is visceral pleura located? covers the lungs themselves
Where is parietal pleura located? along the thoracic wall
What type of epithelium is located in the bronchi? ciliated pseudostratified epithelium
What is pulmonary ventilation? breathing
Inspiration process of getting air into the lungs
Expiration process of getting air out of the lungs
P atm > P lung inspiration, volume increases, pressure decreases
P atm = P lung no movement of air
P atm < P lung expiration, volume decreases, pressure increases
Spirometer an instrument used to measure respiratory volumes and capacities
Respiratory volume is the amount of air in a single respiratory event
Respiratory capacity is the sum of two or more respiratory volumes
Tidal Volume TV the amount of air inhaled or exhaled in normal breathing (~500mL)
Inspiratory Reserve Volume IRV the amount of air INHALED or above normal inspiration (~3300mL)
Expiratory Reserve Volume ERV the amount of air EXHALED after normal breathing (~1000mL)
Residual Volume RV the amount of air remaining in the lungs after a complete exhalation (~1200mL)
Inspiratory Capacity IC the amount of air that can be INHALED after a normal expiration. IC = TV + IRV
Vital Capacity VC the amount of air that can be EXHALED after a maximum inhalation. VC = ERV + IRV + TV or VC = ERV + IC
Minimal Volume the amount of oxygen in the alveoli
Total Lung Capacity TLC the maximum amount of air contained in the lungs after a maximum inhalation. TLC = RV + VC
Functional Reserve Volume FRC the amount of air in the lungs after a normal expiration. FRC = RV + ERV
Atelectasis the collapse of air sacs and lungs
Created by: tmg1116