BIO SCI E109 - Module 4 - CH 7 And 8
Exam Study Guide
Select all that apply to allowing O, transport through blood.
Erythrocytes containing here groups increasing oxygen transport.
Oxygen dissolving in the water within blood
Dissolved proteins increasing oxygen solubility in blood. - ANSWER Erythrocytes
containing here groups increasing oxygen transport.
Oxygen dissolving in the water within blood
Dissolved proteins increasing oxygen solubility in blood.
You take a trip to Denali National Park in Alaska and hike up 5,500 m in elevation
toward the peak of Denali Mountain where the elevation is so high that
atmospheric pressure is half that at sea level
If O2 comprises 21% of all particles in the atmosphere, what is the partial
pressure of O2 at the highest point of your hike?
Hint: pressure is 1 atm at sea level.
Po2 = 0.210 atm
Po2 = 1.00 atm
Po2 = 0.420 atm
Po2 = 0.105 atm - ANSWER Po2 = 0.105 atm
Dalton's Law states: P 02 = (% 02 in air) * (Total pressure)
Since the altitude makes it so that the pressure is 0.5 atm, then:
P 02 = 21% * 0.5 atm = 0.21 * 0.5 = 0.105 atm
Using the above Hemoglobin-Oxygen Saturation curves explain why it is
important to have a non-linear oxygen-dissociation curve.
Less O2 is released in areas of the body where O2 concentrations are the
lowest.
More O2 is released in areas of the body where Oz concentrations are the
lowest.
More O2 is released in areas of the body where O2 concentrations are the
highest. - ANSWER More O2 is released in areas of the body where Oz
concentrations are the lowest.
Using the graph we notice that in areas where the partial pressure of oxygen
(Po2) is LOW (like in areas of tissue doing large amounts of aerobic activity and
consuming oxygen), the saturation of oxygen in hemoglobin (Hb) is also LOW
meaning most of the oxygen bound to hemoglobin dissociates in areas where
there is not a lot of oxygen present.
, This allows tissues, like muscles, to receive more oxygen when they begin using
up more and more of the surrounding oxygen while running for example.
Select the correct order of changes that occur in the air tract when the
diaphragm
contracts :
1.
2. alveolar pressure decreases
3. - ANSWER Answer 1: Thoracic cavity increases in volume
Answer 2: alveolar pressure decreases
Answer 3:air from outside the body will rush into the lungs
Based on the above plot which roman numerals correspond to times when the
individual is exercising deep breathing? - ANSWER iii????
How does the body maintain a constant partial pressure of oxygen in the arteries
even as exercise intensity increases?
Ventilation rate increases.
Less frequent contractions of diaphragm and abdominal muscles.
Ventilation rate decreases. - ANSWER Ventilation rate increases.
Match the location in the nervous system to the correct aspect of sensing or
control of ventilation.
Dorsal Ventilatory Group
Stimulates muscles involved in inspiration
Ventral Ventilatory Group
Stimulates muscles involved in expiration
Glomus Cell
Senses partial pressure of oxygen
Medulla Chemoreceptors
Only senses partial pressure carbon dioxide
Pons
Regulates the central pattern generator - ANSWER Dorsal Ventilatory Group
Stimulates muscles involved in inspiration
Ventral Ventilatory Group
Stimulates muscles involved in expiration
Glomus Cell
Exam Study Guide
Select all that apply to allowing O, transport through blood.
Erythrocytes containing here groups increasing oxygen transport.
Oxygen dissolving in the water within blood
Dissolved proteins increasing oxygen solubility in blood. - ANSWER Erythrocytes
containing here groups increasing oxygen transport.
Oxygen dissolving in the water within blood
Dissolved proteins increasing oxygen solubility in blood.
You take a trip to Denali National Park in Alaska and hike up 5,500 m in elevation
toward the peak of Denali Mountain where the elevation is so high that
atmospheric pressure is half that at sea level
If O2 comprises 21% of all particles in the atmosphere, what is the partial
pressure of O2 at the highest point of your hike?
Hint: pressure is 1 atm at sea level.
Po2 = 0.210 atm
Po2 = 1.00 atm
Po2 = 0.420 atm
Po2 = 0.105 atm - ANSWER Po2 = 0.105 atm
Dalton's Law states: P 02 = (% 02 in air) * (Total pressure)
Since the altitude makes it so that the pressure is 0.5 atm, then:
P 02 = 21% * 0.5 atm = 0.21 * 0.5 = 0.105 atm
Using the above Hemoglobin-Oxygen Saturation curves explain why it is
important to have a non-linear oxygen-dissociation curve.
Less O2 is released in areas of the body where O2 concentrations are the
lowest.
More O2 is released in areas of the body where Oz concentrations are the
lowest.
More O2 is released in areas of the body where O2 concentrations are the
highest. - ANSWER More O2 is released in areas of the body where Oz
concentrations are the lowest.
Using the graph we notice that in areas where the partial pressure of oxygen
(Po2) is LOW (like in areas of tissue doing large amounts of aerobic activity and
consuming oxygen), the saturation of oxygen in hemoglobin (Hb) is also LOW
meaning most of the oxygen bound to hemoglobin dissociates in areas where
there is not a lot of oxygen present.
, This allows tissues, like muscles, to receive more oxygen when they begin using
up more and more of the surrounding oxygen while running for example.
Select the correct order of changes that occur in the air tract when the
diaphragm
contracts :
1.
2. alveolar pressure decreases
3. - ANSWER Answer 1: Thoracic cavity increases in volume
Answer 2: alveolar pressure decreases
Answer 3:air from outside the body will rush into the lungs
Based on the above plot which roman numerals correspond to times when the
individual is exercising deep breathing? - ANSWER iii????
How does the body maintain a constant partial pressure of oxygen in the arteries
even as exercise intensity increases?
Ventilation rate increases.
Less frequent contractions of diaphragm and abdominal muscles.
Ventilation rate decreases. - ANSWER Ventilation rate increases.
Match the location in the nervous system to the correct aspect of sensing or
control of ventilation.
Dorsal Ventilatory Group
Stimulates muscles involved in inspiration
Ventral Ventilatory Group
Stimulates muscles involved in expiration
Glomus Cell
Senses partial pressure of oxygen
Medulla Chemoreceptors
Only senses partial pressure carbon dioxide
Pons
Regulates the central pattern generator - ANSWER Dorsal Ventilatory Group
Stimulates muscles involved in inspiration
Ventral Ventilatory Group
Stimulates muscles involved in expiration
Glomus Cell
