HLSC 2P95 Lec 5 latest complete update A+ graded
Upper respiratory system consist of nose, nasal cavity, sinuses and pharynx
Lower respiratory tract consist of larynx, trachea, bronchi, bronchioles and alveoli
Function of respiratory epithelium movement of mucus up pharyn...
Upper respiratory system consist of nose, nasal cavity, sinuses and pharynx
Lower respiratory tract consist of larynx, trachea, bronchi, bronchioles and alveoli
Function of respiratory epithelium movement of mucus up pharynx
Air leaves the pharynx by passing through what narrow opening glottis
Larynx cylinder whose cartilaginous walls are stabilized by ligaments or skeletal muscle
Location and example of larynx begins at C3 or C4 and ends at C7
singing and talking
Unpaired cartilages of the larynx thyroid, cricoid, epiglottis
Epiglottis closes over the glottis during swallowing food
Paired cartilages of larynx cuneiform, corniculate, arytenoid
Cuneiform cartilage elastic cartilage
Arytenoid cartilage hyaline cartilage
opening and closing of glottis
producing sound
Vocal cords Air passing through vocal cords produces sound
Pitch of vocal cords pitch depends on diameter, length and tension
Amplification of vocal cords amplification of sound occurs in the pharynx, oral cavities, nasal
cavity and sinus cavities
Characteristics of the trachea bifurcates at the carina to the right and left bronchi
, contains 15-20 c shaped tracheal cartilages
Branching of the trachea branching forms the left and right primary bronchi that enter into
the lungs
Right primary bronchiit is steeper and larger in diameter than the left
What can happen because the right primary bronchi is larger person can aspirate foreign
objects into the right lung easier than the left
Primary bronchi separates into split into secondary bronchi
Structure of lungs apex points superiorly and base inferiorly
Lobes of right lung superior, middle and inferior
Components of the lobes of right lung horizontal and oblique fissure
Lobes of left lung superior and inferior with cardiac notch
Components of of the lobes of left lung oblique fissure
Pleural fluid reduces friction when the lungs move upon inhalation and exhalation
Right and left pleural cavities separated by: mediastinum
Sac that envelopes the lungs parietal pleura - pleural cavity with pleural fluid - visceral pleura -
lungs
Entrance to lungs hillum
Secondary bronchi division divides into tertiary bronchi
Number of tertiary bronchi in right lung 10 and therefore 10 bronchopulmonary segments
Number of tertiary bronchi in left lung 9 and therefore bronchopulmonary segments
Conduction from nasal cavity to smallest bronchioles
Respiration respiratory bronchioles and alveoli
Road to respiration bronchus (no respiration)
bronchiole (smooth muscle)
alveolus (respiration)
Where is respiration alveolar sac
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