Blood pH Regulation

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What is the result of increased H+, PCO2, and BPG in blood?

Decrease in hemoglobin affinity for O2 (correct)

Increase in hemoglobin affinity for O2

No effect on hemoglobin affinity for O2

Complete blockage of O2 transport

What happens to hemoglobin's affinity for oxygen at decreased temperatures?

It decreases

It increases (correct)

It remains the same

It becomes zero

What is the effect of heat production on hemoglobin's affinity for oxygen?

It becomes zero

It decreases (correct)

It remains the same

It increases

What is the result of inadequate O2 delivery to tissues?

Hypoxia Signup and view all the answers

What percentage of carbon dioxide is transported dissolved in plasma?

7-10% Signup and view all the answers

What is the result of decreased pH on hemoglobin-O2 bond?

It weakens Signup and view all the answers

What is the term for the shift of the O2-hemoglobin dissociation curve to the right?

Bohr effect Signup and view all the answers

What is the primary site of carbon dioxide transport in the blood?

Red blood cells Signup and view all the answers

What happens to the pH of blood when there is slow shallow breathing?

pH drops Signup and view all the answers

What is the role of bicarbonate ions in the plasma?

They act as a buffer to control blood pH Signup and view all the answers

What happens to carbon dioxide in the lungs?

It dissociates from carbaminohemoglobin and is exhaled Signup and view all the answers

What is the result of the chloride shift in the lungs?

Bicarbonate ions diffuse back into the red blood cell, and chloride ions diffuse out of the red blood cell Signup and view all the answers

What is the role of carbonic anhydrase in the transport of carbon dioxide?

It catalyzes the breakdown of carbonic acid into carbon dioxide and water Signup and view all the answers

What happens to the hydrogen ions in the red blood cell in the lungs?

They are released from hemoglobin and combine with bicarbonate ions Signup and view all the answers

At what point does arterial PO2 need to drop for peripheral chemoreceptors to respond?

Below 60 mm Hg Signup and view all the answers

What triggers peripheral chemoreceptors to send nerve impulses to respiratory centers despite normal PCO2?

Low PO2 Signup and view all the answers

What is the effect of hyperventilation on PCO2 levels?

Lowers PCO2 Signup and view all the answers

How does a decrease in PCO2 during hyperventilation affect pH?

Increases pH Signup and view all the answers

What is the effect on peripheral chemoreceptors when pH is high?

Send fewer impulses to respiratory centers Signup and view all the answers

How does hyperventilation initially affect breathing rate and depth?

Increases breathing rate and depth Signup and view all the answers