Chapter 22 Deck 4

Question 1

cage elevation widens the rack cavity during?

Answer 1

inspiration

Question 2

rib cage depression __________ the thoracic cavity in_______

Answer 2

narrows

expiration

Question 3

changes due to activity or relaxation of all breathing muscles occur except which muscle?

Answer 3

diaphragm

Question 4

in the anterior posterior Dimension changes of movement of the__________ according to activity level of all breathing muscles except diaphragm

Answer 4

sternum

Question 5

____________ law: pressure is inversely related to volume

Answer 5

Boyles gas law

Question 6

if the pressure of a gas decreases the volume of the container ___________?

Answer 6

increases

Question 7

the pressure of a gas increases the volume of the container_________

Answer 7

decreases

Question 8

air flows from high to low pressure until pressure is?

Answer 8

equal

Question 9

atmospheric pressure at sea level is?

Answer 9

760 mm Hg

Question 10

1 atm is?

Answer 10

760 mm Hg

Question 11

air is has a _______ pressure as altitude increases

Answer 11

lower pressure as altitude increases

Question 12

the collective volume of alveoli is called?

Answer 12

alveolar volume

Question 13

the pressure in alveoli which fluctuates with breathing is termed?

Answer 13

intrapulmonary pressure

Question 14

intrapulmonary pressure May be _______________________ in relation to atmospheric pressure?

Answer 14

higher lower or equal to atmospheric pressure

Question 15

intrapulmonary pressure is_________ 2 atmospheric pressure at end of inspiration and expiration

Answer 15

equal to

Question 16

pressure in the pleural cavity which fluctuates with breathing is termed?

Answer 16

intrapleural pressure

Question 17

intrapleural pressure is __________ van intrapulmonary pressure between breaths?

Answer 17

4 mm Hg lower

Question 18

between breaths what is intrapleural pressure and intrapulmonary pressure?

Answer 18

intrapleuralpressure 756

intrapulmonary pressure 760

Question 19

during inspiration the thoracic volume increases and thoracic pressure _________

Answer 19

decreases

air flows in

Question 20

during ____________: the thoracic volume decreases, the thoracic pressure increases, so air flows out

Answer 20

expiration

Question 21

during quiet inspiration diaphragm accounts for _______ volume change comma external intercostals movement accounts for ______volume change

Answer 21

diaphragm 2/3

external intercostals 1/3

Question 22

during quiet inspiration what volume changes occur in the intrapleural cavity

Answer 22

increase in volume- decease in pressure

Question 23

lungs are pulled by the pleura so long volume increases and intrapulmonary pressure decreases during _________________?

Answer 23

quiet inspiration

Question 24

what volume flows in as tidal volume during quiet inspiration?

Answer 24

.5 L

Question 25

during quiet expiration interpro pressure is about ___________ lower than atmospheric or intrapulmonary pressure?

Answer 25

6 mm Hg

Question 26

the diaphragm and external intercostals relax decreasing thoracic volume during?

Answer 26

quiet expiration

Question 27

during quiet expiration pleural cavity volume ___________ so intrapleural pressure __________?

Answer 27

pleural cavity volume decreases intrapleural pressure increases

Question 28

during _______ __________ intrapulmonary pressure is greater than atmospheric pressure so air flows ________ until these pressures are equal?

Answer 28

quiet expiration air flows out- until pressure is equalized

Question 29

what volume of air leaves the lungs during quiet expiration?

Answer 29

.5 L

Question 30

the mechanics of forced breathing requires_________ of additional ________

Answer 30

contraction of additional muscles causes greater changes in thoracic cavity volume in inter pulmonary pressure

Question 31

________ ________ collection of nuclei in the pons and medulla oblongata, coordinate breathing?

Answer 31

respiratory Center

Question 32

nuclei of the respiratory Center can be found in?

Answer 32

pons and medulla oblongata

Question 33

what are the chemoreceptors involved in regulating breathing?

Answer 33

1. Central chemoreceptors | 2. peripheral chemoreceptors

Question 34

where are the central chemoreceptors located?

Answer 34

medulla oblongata

Question 35

what do the central chemoreceptors monitor?

Answer 35

pH changes of cerebrospinal fluid

Question 36

pH changes of cerebrospinal fluid monitored by Central chemoreceptors are caused by changes in blood?

Answer 36

PCO2 partial pressure of blood CO2 levels

Question 37

cerebrospinal fluid contains ________ _______ which forms carbonic acid when CO2 diffuses into cerebrospinal fluid?

Answer 37

Carbonic anhydrase

Question 38

what mixes with CO2 in the cerebrospinal fluid to form carbonic acid?

Answer 38

Carbonic anhydrase

Question 39

Central chemoreceptors in the medulla oblongata monitor pH of cerebrospinal fluid by monitoring concentrations of what?

Answer 39

H+

Question 40

peripheral chemoreceptors are located in?

Answer 40

aortic and carotid bodies

Question 41

peripheral chemoreceptors are stimulated by changes in _____ or respiratory _____ in blood

Answer 41

changes in H+ or respiratory gases in blood

Question 42

peripheral chemoreceptors respond to H+ produced independently of ____

Answer 42

Co2

Question 43

quiet breathing is maintained by respiratory Center nuclei. ______________ firing during inspiration and inhibited from negative feedback during expiration

Answer 43

cyclic spontaneous firing

Question 44

quiet breathing maintained by respiratory Center nuclei. cyclic spontaneous firing ( __________) an inhibition from negative feedback (________)

Answer 44

inspiration expiration

Question 45

respiration rate for normal quiet breathing is called?

Answer 45

eupnea

Question 46

eupnea is?

Answer 46

respiration rate for a normal quiet breathing

Question 47

eupnia or respiration rate for a normal quiet breathing is between _________ breaths per minute

Answer 47

12-15

Question 48

quiet breathing is maintained by?

Answer 48

respiratory Center nuclei