Unit 3- Lower Respiratory Tract

Front 1

margins of the trachea

Back 1

inferior border of cricoid cartilage (C6);

bifurcation at level of sternal angle (T4-T5)

Front 2

how many tracheal rings are there and what are they used for

Back 2

16- 20 C-shaped hyaline cartilages

for expansion and contraction

Front 3

the bifurcation of the trachea

Back 3

carina

Front 4

______ main bronchus is shorter and more vertical than the other

Back 4

right

Front 5

right main bronchus runs under the

Back 5

arch of the azygos V

Front 6

right main bronchus divides into _______ lobes

Back 6

three lobes

superior, middle, and inferior lobes

Front 7

right main bronchus divides into 3 secondary lobar bronchi and then into ________

Back 7

10 segmental bronchi

Front 8

on the right side there is a bronchus that goes with right superior lobar bronchus above the pulmonary A

Back 8

eparterial bronchus

Front 9

all the others bronchus are lower than the arteries

Back 9

hyparterial

Front 10

Left main bronchus is inferior to the

Back 10

arch of the aorta

Front 11

Left primary bronchus divides into ______ lobes

Back 11

superior and inferior lobes

Front 12

left main bronchus divides into two lobar bronchi and then into

Back 12

8-10 segmental bronchi

Front 13

what crosses the left main bronchus laterally and medially?

Back 13

–crossedsuperiorlyby arch of the aorta medially

–crossedby the L. pulmonary artery laterally

Front 14

lungs are attached to heart and trachea by their roots and the ___________

Back 14

pulmonary ligament

Front 15

what is the blood supply for non respiratory tissues of the lungs

Back 15

bronchial A/V, and some pulmonary VV

Front 16

manybronchials job is to ________

Back 16

drain blood tissue

Front 17

the base of the lungs rests on

Back 17

convex surface of diaphragm

Front 18

the base of the lungs ______ during inspiration, and _______ during expiration

Back 18

–inspiration: descends

–expiration: ascends

Front 19

3 surfaces of the lungs

Back 19

–Mediastinal, costal, and diaphragmatic

Front 20

3 borders of the lungs

Back 20

–Anterior, posterior, and inferior

Front 21

contents of the root of the lung

Back 21

pulmonaryA,

2pulmonary V,

mainbronchus,

bronchial vessels,

nerves,

lymphatics

Front 22

hilum is where things

Back 22

go in and out of

Front 23

pulmonary L is an extension of the pleura. its function is to

Back 23

hold root of lung in place

Front 24

which nerve pass in front of and which passes behind the root

Back 24

•vagus n.: passes behind root

•phrenic n.: passes in front of root

Front 25

which lungs is larger and heavier

Back 25

right

Front 26

fissures of the right lung

Back 26

oblique

horizontal

Front 27

respiratory bronchi of the right lung

Back 27

3lobar (secondary)

10 segmental (tertiary) bronchi

Front 28

mediastinal surface of the right lung contains

Back 28

SVC

INV

Arch of Azygos

Esophagus

Heart

Front 29

what does the left lung look like compared to the right

Back 29

taller and narrower

Front 30

lobes of the left lung

Back 30

upper-lingula

lower

Front 31

fissures of the left lung

Back 31

oblique

Front 32

respiratory bronchus of the left lung

Back 32

2lobar (secondary),

8-10 segmental (tertiary) bronchi

Front 33

mediastinal surface of the left lung contains

Back 33

•Mediastinalsurface: grooves foraortic arch, heart, descending aorta, and esophagus

Front 34

lymphatic drainage of the lung have vessels to drain the _____, _______, and _______

Back 34

bronchialtree,

pulmonary vessels,

intersegmentalseptum

Front 35

what are the 5 nodes in the lung

Back 35

–bronchopulmonarynodes

–inferior/superiortracheobronchial nodes

–trachealnodes

–bronchomediastinalnodes

–thoracicductand R. lymphatic duct

Front 36

the nodes are NOT present around the

Back 36

alveoli

Front 37

pulmonary trunk bifurcates at the level of ____

Back 37

to the left and below carina

Front 38

pulmonary trunk carries __________ blood

Back 38

deoxygenated

Front 39

right pulmonary A passes anterior to ______ and ______ and then dip under ________

Back 39

carina and R. bronchus;

under aorta

Front 40

left pulmonary A passes anterior to the

Back 40

L primary bronchus

Front 41

How many pulmonary veins are there usually?

Back 41

5

Front 42

bronchial arteries arise from _______ to receive blood from ______

Back 42

descending aorta;

bronchi

Front 43

bronchial VV drain into ________ on the right.

___________ on the left.

Back 43

Azygos V on the R;

Hemiazygos on the Left

Front 44

nerve supply to the lungs includes (3)

Back 44

Anteriorand PosteriorPulmonaryPlexi

Visceralefferents fromVagus N

Visceralefferents fromsympathetic trunk

Front 45

the visceral efferent from vagus N are from the _____ nervous system

Back 45

parasympathetic

Front 46

what is the effect on the lung of the visceral efferents from Vagus N

Back 46

Constrictbronchioles which has to dilate pulmonary vessels

Front 47

what is the effect on the lung of the visceral efferents from sympathetic trunk

Back 47

–Dilatesbronchioles which constricts pulmonaryvesselswhere there is low air profusion

–Dilationof central lung where expansion of alveolar can happen better.