Chapter 23: Respiratory system

Question 1

Respiratory epithelium

Answer 1

ciliated pseudostratifed columnar epithelium lining the respiratory tract

Question 2

Intrapulmonary pressure

Answer 2

intra-alveolar pressure relative to ATM

Question 3

Intrapleural pressure

Answer 3

pressure in space between parietal and visceral pleura
-cyclical changes operate the respiratory pump

Question 4

Inspiration

Answer 4

inhalation
-less pressure in lungs
-bigger lungs
-diaphragm is contracted

Question 5

Expiration

Answer 5

exhalation
-more pressure in lungs
-smaller lungs
-diaphragm is relaxed

Question 6

Respiratory rate

Answer 6

number of breaths per minute

Question 7

Respiratory Tidal Volume (Vt)

Answer 7

amount of air in single respiratory cycle

Question 8

Expiratory Reserve Volume (ERV)

Answer 8

amount of air voluntarily expelled

Question 9

Residual Volume (RV)

Answer 9

air remaining in the lungs after maximal exhalation

Question 10

Minimal Volume (MV)

Answer 10

amount of air in collapsed lungs

Question 11

Inspiratory Reserve Volume (IRV)

Answer 11

air taken in over tidal volume

Question 12

External intercostal muscles

Answer 12

assists inhalation; brings in 25% of air volume

Question 13

Internal intercostal muscles

Answer 13

depress the ribs

Question 14

Neural control of respiration

Answer 14

when O2 demand rises, cardiac output and respiratory rates increase under neural control (voluntary and involuntary components0