Respiratory Physiology - Control of Ventilation - Acid base balance

Question 1

What is acid based balance controlled by?

Answer 1

renal and respiratory system

Question 2

What is acid based balance?

Answer 2

controlling the pH of extracellular fluid

Question 3

What is the normal pH of extracellular fluid?

Answer 3

pH 7.4

Question 4

What do the peripheral chemoR respond to?

Answer 4

increasing plasma [H+], often originating from CO2 also plasma.

Question 5

What happens to [H+], when plasma pH falls?

Answer 5

[H+] increases

simulating ventilation

Question 6

What happens when there is an increase of [H+] in the plasma?

Answer 6

increase in ventilation

Question 7

Describe the relationship between ventilation and plasma [H+] (graph)

Answer 7

linear

Question 8

What happens when ventilation increases?

Answer 8

acidosis ([H+] increases)

Question 9

What happens when plasma hydrogen ion concentration decreases?

Answer 9

increase in pH

Question 10

What happens when to ventilation when hydrogen ion conc falls?

Answer 10

inhibition of ventilation

Question 11

How would you describe a fall in hydrogen ion conc?

Answer 11

alkalosis

Question 12

What is the relationship between the ventilation and plasma hydrogen ion concentration?

Answer 12

a change in the hydrogen ion conc of plasma will chnage ventilation

Question 13

Wy does ventilation change when hydrogen ion conc changes?

Answer 13

try and restore the normal hydrogen ion conc

Question 14

What is metabolic acidosis?

Answer 14

increase in hydrogen ion conc in plasma for a reason that is not a change in respiratory function

Question 15

What would cause an increase in hydrogen ion concentration in plasma?

What receptors would be stimulated

Answer 15

lactic acid production

stimulate peripheral chemoR

Question 16

When metabolic acidosis occurs, and you increase ventilation, what way will the line of the graph move?

Answer 16

move to left

Question 17

How does increasing ventilation decrease hydrogen ion conc?

Answer 17

drives the equation to the left and blow off more CO2, and reduce H+ conc.

negative feedback loop

Question 18

Why would you want to inhibit ventilation when hydrogen ion ocnc falls?

Answer 18

retain CO2 and drive equation to the right and increase hydrogen ion conc and compensate for the fall in plasma hydrogen ion conc

Question 19

What is respiratory alkilosis?

Answer 19

increasing ventilation (hyperventilate)

blow off CO2 and move equation to the left and reduce the H+ plasma

Question 20

What do most respiratory disease arise from?

Answer 20

decreased ventilation

Question 21

What is respiratory acidosis?

Answer 21

decreased ventilation, retain CO2, drive equation to the right and build up of H+ in the plasma and acidosis

Question 22

What is the equation of CO2 to H+?

Answer 22

Question 23

Is CO2 capable of changing ECF pH?

Answer 23

yes

Question 24

Does hypoventilation retain of blow off CO2?

Answer 24

CO2 retention

Question 25

Does hyperventilation blow off or retain CO2?

Answer 25

CO2 blow off

Question 26

What does this equation tell you?

Answer 26

pH is proportionate to bicarbonate and CO2

Question 27

What is HCO3 controlled by?

Answer 27

kindneys

Question 28

What is CO2 managed by?

Answer 28

lungs

Question 29

What is the equation for acid based balance?

Answer 29

Question 30

In this equation, what happens if CO2 increases?

Answer 30

pH decreases

acidic

Question 31

In this equation, what happens if HCO3 increases?

Answer 31

pH increases

more alkaline