Anatomy And Physiology Of The Respiratory System.2.1

Front 1

__________ are the 10th –15ths airway generations

Back 1

bronchioles

Front 2

Bronchioles are < _ mm in diameter

Back 2

1mm

Front 3

Bronchioles lack __________ ______ _______

Back 3

connective tissue sheaths

Front 4

Bronchioles are surrounded by ______ ______ fibers (lack rigidity)

Back 4

spiral muscle fibers

Front 5

Bronchioles are lined with ________ epithelium.

Back 5

cuboidal epithelium

Front 6

______ _______ affects intraalveolar and intrapleural pressure changes

Back 6

airway patency

Front 7

____ __ _______ also plays a role in respiratory disease. (bronchioles)

Back 7

Lack of support

Front 8

________ ___________ are the 16th–19th generation of airways

Back 8

terminal bronchioles

Front 9

Terminal bronchioles are about _._mm in diameter

Back 9

0.5mm

Front 10

________ ___________ are the end of the conducting zone.

Back 10

Terminal bronchioles

Front 11

Terminal bronchioles contain _____ cells which are secreting cells with unknown purpose.

Back 11

Clara

Front 12

As the walls thin, small channels called ______ __ _______ appear between terminal bronchioles and adjacent alveoli

Back 12

Canals of Lambert

Front 13

_____________ ______ ________ occurs due to elastic properties of lung parenchyma (gas exchange region)

Back 13

parabronchial radial traction

Front 14

Airway patency is maintained in noncartilaginous airways by the __________ ______ of elastic tissue fibers

Back 14

retractile forces

Front 15

___________ ___________ are characterized by alveoli "budding" from their walls

Back 15

respiratory bronchioles

Front 16

________ _____ are composed of alveoli seperated by septal walls containing smooth muscle

Back 16

alveolar ducts

Front 17

________ _____ are grape–like clusters consisting of 15–20 _______

Back 17

alveolar sacs, alveoli

Front 18

Respiratory bronchioles + alveolar ducts + alveolar sacs =

Back 18

primary lobule, acinus, lung parenchyma

Front 19

In an adult male there are approximently ___ _______ alveoli

Back 19

300 million

Front 20

Alveolar surface area is approximently __ m2 or roughly the size of a ______ _____

Back 20

70 m2, tennis court

Front 21

Type I pneumocytes compose about __% of the alveolar surface

Back 21

95%

Front 22

Type I pneumocytes are _____, ____ cells that are the _____ site of alvolar gas exchange.

Back 22

broad, thin, major

Front 23

Type II pneumocytes form the remaining _% of the total alveolar surface

Back 23

5%

Front 24

Type II pneumocytes are the primary source of _________ __________

Back 24

pulmonary surfactant

Front 25

Type III cells are also known as

Back 25

alveolar macrophages

Front 26

Alveolar macrophages are

Back 26

large, migrating phagocytes

Front 27

Alveolar macrophages can do three different things after removing bacteria or other foreign particles deposited within the acini

Back 27

migrate to terminal bronchioles (moved by cilia)
migrate to interstitial space and remain there or enter lymph system
remain in alveolus and die

Front 28

Pores of Kohn are

Back 28

small holes in the walls of the intra–alveolar septa

Front 29

Pores of Kohn permit

Back 29

gas movement between adjacent alveoli

Front 30

Pores of Kohn are formed by these three things

Back 30

desquamation of epithelial cells due to disease
normal degeneration of tissue cells due to aging
movement of macrophages