gaseous exchange Flashcards
which structures does cilia line
trachea
the lungs of a long term smoker will have
constricted bronchioles
does pressure within the thoracic cavity occur during inhalation
no
the rate of breathing is regulated mainly
according to O2 level in blood
what is The cartilaginous structure that contains the vocal chords.
larynx
what is Instrument that measures the rate and depth of breathing.
spirometer
Tiny air sacs at the end of each bronchiole.
alveoli
A pigment that transports oxygen in earthworms
hemoglobin
Transport of carbon dioxide in
the blood
bicarbonate ions
two forms that gas is transported in
oxyhemoglobin
dissolved in plasma
Explain ways in which the alveolous is adapted for its function.
-one cell layer of squamous- thin layer for easy diffusion
-alveoli is lobe/cup shaped- increases SA for diffusion
-moist surface of alveoli- facilitates diffusion
- richly supplied with RBCs- rapid transport of O2 from alveolus and CO2 to the alveolus
explain inhalation
ribs are lifted
chest cavity expands and moves outward
thoracic cavity enlarges
lungs are larger
diaphragm contracts, flattens and moves downward
muscle that are involved in inhalation.
intercostal muscles
diaphragm
