L25 Lungs and Pleura II

Question 1

___ supply blood to the lungs for gas exchange

Answer 1

Pulmonary arteries and veins

Question 2

pulmonary arteries

Answer 2

branch off the pulmonary trunk

carry oxygeng poor blood to the lungs for oxygenation

once they branch out, they follow the branching patterns of the bronchi (lobar and segmental arteries)

Question 3

pulmonary veins

Answer 3

drain across bronchopulmonary segment boundaries (do not follow bronchial tree)

carry oxygen rich blood back to heart (two veins from each lung

also drain oxygen poor blood from much of the visceral pleura and substance of the lung

small volume of oxygen poor blood relative to oxygenated blood

Question 4

alveoli

Answer 4

surrounded by capillary beds

site of gas exchange

Question 5

bronchial arteries and veins

Answer 5

supply blood to the stroma of the lungs

Question 6

bronchial arteries

Answer 6

branch directly from the thoracic aorta

Question 7

bronchial veins

Answer 7

return som blood from the lung stroma to the azygos system

Question 8

lymphatic drainage in the lungs

Answer 8

deep lymphatic plexus

superficial lymphatic plexus

Question 9

deep lymphatic plexus

Answer 9

follows bronchial tree and drains deep lung and derivatives of root structures

pulmonary nodes

Question 10

superficial lymphatic plexus

Answer 10

Drains lung tissue, visceral pleura, deep lymphatic plexus

Bronchopulmonary (hilar) nodes

Tracheobronchial nodes

Paratracheal nodes

Lymphatic trunks (thoracic duct, right lymphatic trunk

Question 11

there is ____ between left and right plexuses. most lymph from the inferior lobe of the ____ crosses to the ___ with notable clinical repercussions

Answer 11

crossing communication

left lung

right side tracheobronchial nodes

***LEFT CROSSES OVER TO RIGHT (higher pressure on left side due to heart)

Question 12

lung surface anatomy

Answer 12

healthy lung tissue is spongey and pink and forms to the contours of the structures surrounding it

Question 13

costal surface anatomy

Answer 13

rib impressions

Question 14

diaphragmatic surface anatomy

Answer 14

where the diaphragm meets the lung

Question 15

mediastinal surface anatomy

Answer 15

around the hilum of the lung is the boundary where parietal pleura becomes visceral pleura

pulmonary ligament

impressions for most major mediastinal structures

Question 16

pulmonary ligament

Answer 16

double layer of pleura extending down from the root of the lung strucutres

Question 17

right lung impressions

Answer 17

cardiac impression

superior vena cava impression

arch of the azygos impression

tracheal impression

esophagus impression

Question 18

left lung impressions

Answer 18

cardia impression

aortic arch impression

left subclavian artery impression

thoracic aorta impression

left brachiocephalic vein impression

Question 19

trachea/bronchi

function

support layer

mucosa layer (epithelium

Answer 19

airway/structure

cartilage-rigid wall to resist collapse

pseudostratified - moistens air and traps and moves particles

Question 20

bronchioles

function

support layer

mucosa layer (epithelium

Answer 20

flow control

smooth muscle - change tube diameter

simple

FINISH

Question 21

trachea/bronchi

function

support layer

mucosa layer (epithelium

Answer 21

FINISH

Question 22

_____of the respiratory system is very similar from the nasal cavity
through the bronchi

Answer 22

standard pseudostratified epithelium

Question 23

Answer 23

Question 24

Answer 24

Question 25

goblet cells

Answer 25

interspaced thorughout epithelium mucus secretion into the airway lumen for moisture control and particle capture

Question 26

ciliated cells

Answer 26

predominant cell type movement of mucus and captures particles up and out of the airway into to the oral cavity

Question 27

bassal cells

Answer 27

regenerate epithelium

Question 28

Answer 28

Question 29

Answer 29

Question 30

Answer 30

Question 31

Answer 31

Question 32

Answer 32

Question 33

respiratory epithelium

Answer 33

completely lines lumen of the trachea

Question 34

tracheal cartilage

Answer 34

c shaped gives way to membrane along the posterior wall flexible posterior wall includes trachealis, smooth muscle for constriction of the tracheal lumen

Question 35

Answer 35

Question 36

Answer 36

Question 37

Answer 37

Question 38

Answer 38

Question 39

finish slide 17

Question 40

Answer 40

muscociliary escalator

Question 41

mucociliary escalator is more prominent in ____ where ___ and ___ secrete a thin mucus

Answer 41

trachea and bronchi goblet cells submucosal glands

Question 42

Mucus ____ in mucociliary escalator

Answer 42

humidifies air and traps micro-organisms & foreign particles

Question 43

slide 18

Question 44

sqamous metaplasia

Answer 44

chronic irritation or damage to the respiratory epithelium leads to patches of widespread cell death

Question 45

in sqamous metaplasia, ___ is replaced with ___

Answer 45

Pseudostratified epithelium replaced with thick stratified squamous epithelium

Question 46

slide 19

Question 47

slide 20

Question 48

Development of the respiratory tree begins as a __ of the ___ region of the ____.

Answer 48

ventral diverticulum pharyngeal foregut

Question 49

____ develops at 4 wks

Answer 49

lung bud

Question 50

airway lining comes from

Answer 50

endoderm

Question 51

supporting structures of the lungs comes from

Answer 51

visceral mesoderm

Question 52

Communication between ___ runs the entire length of the developing trachea ___ form at __ of developing trachea Trachea is separated from the foregut (esophagus) by the development and closure of ____ Only remaining opening is ____

Answer 52

gut tube and respiratory diverticulum Primary bronchi buds distal end tracheoesophageal ridges the developing larynx

Question 53

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