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HLSC 2P95 Lec 5 latest complete update A+ graded
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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...

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  • January 25, 2024
  • 8
  • 2023/2024
  • Case
  • Professor anthony
  • A+

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  • hlsc 2p95 lec 5 latest complete update a graded
  • upper respiratory system consist of
  • lower respiratory tract consist of

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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 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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