Exam 3: Respiratory System Flashcards Preview

Anatomy A-215 > Exam 3: Respiratory System > Flashcards

Flashcards in Exam 3: Respiratory System Deck (42)
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31

Conduction Portion of Bronchial Tree

-left and right primary bronchi
-secondary (lobar) bronchi
-tertiary (segmental) bronchi
-bronchioles

32

Primary Bronchi

-one goes to each lung
-lined with psuedostratified cilliated columnar epithelium
-these structures are outside the lung
-irregular plates of cartilage
-once they enter the lung they divide into secondary

33

Secondary (Lobar) Bronchi

-go to one lobe of each lung
-irregular cartilage plates
-3 in right 2 in left

34

Tertiary (Segmental) Bronchi

-supply one specific segment of the lung (bronchopulmonary segments)
-still have some cartilage
-segmental bronchi divide into smaller bronchi and these smaller bronchi divide into bronchioles
-psuedostratified cilliated columnar epithelium

35

Bronchioles

-no cartilage here
-cartilage is replaced by smooth muscle (when contracts-->bronchoconstriction-parasympathetic, when loosens-->bronchiodialation-sympathetic)
-last generation of bronchioles in conducting portion are terminal bronchioles

36

Respiratory Portion

-gas exchange occurs
-respiratory bronchiles
-alveolar ducts
-alveoli

37

Respiratory Bronchiles (Tissue)

-simple cubodal epithelium

38

Alveolar Ducts (Tissue)

-simple squamous epithelium, good for diffusion

39

Alveoli

-smallest units of respiratory portion
-simple squamous epithelium

40

Bronchitis vs. Pneumonia

-similarities: both cause inflammation of part of respiratory passageways
-differences: bronchitis is inflamed bronchi, caused by infection or exposure to irritants like smoking. pneumonia is inflamed alveoli cause by infection, respiratory membrane thickens and fluid/leukocytes fill alveoli

41

Function of Tonsils

-provide first line of defense against pathogens in air, food or drink

42

Respiratory Membrane

-simple squamous epithelium of the alveolus and the simple squamous epithelium of a pulmonary capillary