Studied by 1 personnose
air in the nostrils
nasal cavity
hollow cavity divided by nasal septum and mucus membranes
paranasal sinuses
air filled spaces in skull
pharynx
part of the throat behind the mouth and nasal cavity
larynx
muscles cartilage form vocal cords
trachea
airway that leads from the larynx to the bronchi
bronchial tree
branched airways from trachea to air sacs
lungs
spongy air-filled organs covered by pleura
inspiration
(inhalation) diaphragm contracts downward and air flows in
expiration
(exhalation) diaphragm relaxes and air is forced out
→ Controlled by Nervous system
Alveoli
air sacs at the ends where gas exchange happens
→ Simple squamous epithelium in contact with thin walled capillaries
→ O2 & CO2 pass by simple diffusion
Note
Flashcard