ventilation

Question 1

exchange I is

Answer 1

atmosphere to lung (ventilation)

Question 2

exchange II; alveolar gas exchange

Answer 2

lung to blood

Question 3

transport of what occurs after exchange II

Answer 3

gases in the blood (pulmonary and systemic circulation)

Question 4

exchange III: cellular respiration

Answer 4

blood to cells

Question 5

external respiration: alveolar gas exchange cells

Answer 5

type I cells

Question 6

surfactant production; reduce surface tension of hydrogen bonds

Answer 6

type II cells

Question 7

alveolar macrophages that have immune function

Answer 7

type III cells

Question 8

why do the vessels bronchodilate when there is high CO2 partial pressure in alveoli

Answer 8

to get CO2 out

Question 9

what happens when the diaphragm contracts (V and P)

Answer 9

volume up, pressure down

Question 10

elastic recoil opposes what

Answer 10

compliance (change in V/ change in P)

Question 11

pressure holding lungs open

Answer 11

transpulmonary pressure

Question 12

external respiration of O2 is from where to where

Answer 12

alveoli to RBC

Question 13

inernal respiration of O2 is from where to where

Answer 13

RBC to systemic tissues

Question 14

internal respiration for CO2 and H+ goes from where to where

Answer 14

systemic tissues to plasma

Question 15

external respiration for CO2 and H+ goes from where to where

Answer 15

RBC and plasma to alveoli

Question 16

the peripheral chemoreceptors in ventilation do what

Answer 16

monitor PCO2, PO2 and H

Question 17

the central chemoreceptors: medulla oblongata respond to

Answer 17

H+ in CSF

Question 18

the stimulation of the central: medulla oblongata sets what

Answer 18

respiratory rhythm and depth of ventilation

Question 19

from the medulla VRG the pre-botzinger cells are ____ neurons and act like

Answer 19

inspiratory; pacemaker cells

Question 20

from the medulla VRG the botzinger cells are _____ neurons

Answer 20

expiratory

Question 21

what part of the medulla VRG is required for deep breath in

Answer 21

caudal

Question 22

the medulla DRG functions to

Answer 22

alter VRG based off peripheral chemoreceptors

Question 23

the medulla RTN functions to

Answer 23

alter action of VRG based off central chemoreceptors

Question 24

the APC of the pons is active when

Answer 24

in transition to inspiration but always firing somewhat

Question 25

The PTC of the pons are active when

Answer 25

in transition to expiration but always firing somewhat

Question 26

in chronic hypercapnia what happens to PCO2

Answer 26

set point gets raised; low PO2 becomes the way to tell if CO2 is bad