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ANS 214L Lab 4

Respiratory System

pleur- chest lining
pneum-, pulm- lungs
thora- chest
trache- windpipe
principal organs of the respiratory system in mammals nose, nasal cavities, pharynx, larynx, trachea, bronchi and lungs
upper respiratory tract the airway from the nose through the pharynx and larynx
lower respiratory tract airway from the trachea through the lungs, includes the various bronchi, bronchioles, and alveoli
conductive zone acts to transport air, includes the nose through the conducting bronchioles, ending with the terminal bronchioles
respiratory zone represents the region where gas exchange occurs and includes the respiratory bronchioles and alveoli
where does gas exchange in birds occur air capillaries
functions of the upper respiratory system filter, heat, humidify
tidal volume volume of air moving in and out during respiration
minute respiratory volume tidal volume times respiration rate
resting tidal volume volume of air moving in and out during respiration when at rest
vital capacity maximum volume of air inspired after maximum expiration
residual volume the air that remains in the airways after maximal forced expiration, and thus cannot be removed
total lung capacity the sum of vital capacity and residual volume
components of the conductive zone trachea, bronchi, bronchioles, conducting bronchioles, terminal bronchioles
components of the respiratory zone respiratory bronchioles, alveoli
inspiration in mammals muscles contract, lung volume increases, active due to muscle contraction
expiration in mammals muscles relax, volume decreases, passive (occurs when muscles relax)
air spaces in avian respiratory system cervical air sacs (2), clavicular air sac (1), cranial thoracic air sacs (2), caudal thoracic air sacs (2), abdominal air sacs (2), lungs (2)
avian respiratory system components trachea, bronchi/mesobronchi (primary), ventral bronchi (secondary), dorsal bronchi (secondary), parabronchi (tertiary), air capillaries
pathway of air through the avian system trachea, mesobronchi, dorsobronchi, parabronchi, air cappillaries, parabronchi, ventrobronchi, mesobronchi, trachea
pulmonary surfactant lowers surface tension between alveolar membranes preventing the alveoli from collapsing
type of system in avians open
lungs expand in avians? no
in avians gas exchange occurs in air capillaries
inspiration in avians active
expiration in avians active
where pulmonary surfactant produced in avians laminated osmiophillic bodies
when pulmonary surfactant produced in avians day 18
type of system in mammals closed
lungs expand in mammals? yes
in mammals gas exchange occurs in alveoli
inspiration in mammals active
expiration in mammals passive
where pulmonary surfactant produced in mammals type II alveolar cells
when pulmonary surfactant produced in mammals late pregnancy
Created by: adekkers



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