PHSI3011 07-1 Cardiorespiratory adaptation to high altitude

Question 1 of 10

1

Label the following:

Drag an answer into the correct orange point.

Atmospheric air

Inspired air

Alveolar gas

Arterial blood

Mixed venous blood

Explanation

Question 2 of 10

1

True or false: Hypoxia (measured in the Carotid artery) triggers an increase in respiratory activity, which in turn increases ventilation. In response to the nasopharyngeal (diving) reflex (yeah, wrong lecture. whatevs), this is absent.

Select one of the following:

True
False

Explanation

Question 3 of 10

1

True or false: Pulmonary stretch receptors influence the cardiovascular system as part of the Hering-Breuer reflex.

Select one of the following:

True
False

Explanation

Question 4 of 10

1

Hypoxia causes both EXCITATION (secondarily, from pulmonary stretch receptor activity) and INHIBITION (primarily, from chemoreceptor activity) of HR.
At high altitude altitude, what is the NET effect?

Select one of the following:

Excitation
Inhibition

Explanation

Question 5 of 10

2

Hypoxia causes both EXCITATION (secondarily, from pulmonary stretch receptor activity) and INHIBITION (primarily, from chemoreceptor activity) of Vascular Resistance.
At high altitude altitude, what is the NET effect?

Select one of the following:

Excitation (so secondary vasoconstriction)
Inhibition (so primary vasodilation)
Excitation (so primary vasoconstriction)
Inhibition (so secondary vasodilation)
Excitation (so primary vasodilation)
Inhibition (so primary vasoconstriction)
Excitation (so secondary vasodilation)
Inhibition (so secondary vasoconstriction)

Explanation

Question 6 of 10

1

The NTS is where the quite a few of the baroreceptors and chemoreceptors lead to. What is it, though?
NTS = ??

Select one or more of the following:

Nucleus of Solitary Tract (NTS)
Nucleus Tractus Solitarii (NTS)

Explanation

Question 7 of 10

1

Fill in the two arrows.

Drag an answer into the correct orange point.

↑

↓

Explanation

Question 8 of 10

1

Click on the orange point and select the correct answer.

What is it that moves the curve to the blue one?

Explanation

Question 9 of 10

1

Over prolonged exposure to high altitude (a few days or more), production of __________ increases. The effect of this is to maintain O2 unloading in capillaries, despite reduction in inspired PO2.

Select one or more of the following:

2-DPG
2-BPG
2,3-DPG
2,3-BPG
RBC production

Explanation

Question 10 of 10

1

	Created by Michael Jardine over 6 years ago

PHSI3011 07-1 Cardiorespiratory adaptation to high altitude

PHSI3011 07-1 Cardiorespiratory adaptation to high altitude

Question 1 of 10

Label the following:

Drag an answer into the correct orange point.

Explanation

Question 2 of 10

True or false: Hypoxia (measured in the Carotid artery) triggers an increase in respiratory activity, which in turn increases ventilation. In response to the nasopharyngeal (diving) reflex (yeah, wrong lecture. whatevs), this is absent.

Select one of the following:

Explanation

Question 3 of 10

True or false: Pulmonary stretch receptors influence the cardiovascular system as part of the Hering-Breuer reflex.

Select one of the following:

Explanation

Question 4 of 10

Hypoxia causes both EXCITATION (secondarily, from pulmonary stretch receptor activity) and INHIBITION (primarily, from chemoreceptor activity) of HR. At high altitude altitude, what is the NET effect?

Select one of the following:

Explanation

Question 5 of 10

Hypoxia causes both EXCITATION (secondarily, from pulmonary stretch receptor activity) and INHIBITION (primarily, from chemoreceptor activity) of Vascular Resistance. At high altitude altitude, what is the NET effect?

Select one of the following:

Explanation

Question 6 of 10

The NTS is where the quite a few of the baroreceptors and chemoreceptors lead to. What is it, though? NTS = ??

Select one or more of the following:

Explanation

Question 7 of 10

Fill in the two arrows.

Drag an answer into the correct orange point.

Explanation

Question 8 of 10

Click on the orange point and select the correct answer.

What is it that moves the curve to the blue one?

Explanation

Question 9 of 10

Over prolonged exposure to high altitude (a few days or more), production of __________ increases. The effect of this is to maintain O2 unloading in capillaries, despite reduction in inspired PO2.

Select one or more of the following:

Explanation

Question 10 of 10

Select from the dropdown lists to complete the text.

Hypoxia at high altitude results in Increased Decreased( Increased, Decreased ) Blood-brain barrier permeability and Cerebral Vasodilation Vasoconstriction( Vasodilation, Vasoconstriction ).

Explanation

Hypoxia causes both EXCITATION (secondarily, from pulmonary stretch receptor activity) and INHIBITION (primarily, from chemoreceptor activity) of HR.
At high altitude altitude, what is the NET effect?

Hypoxia causes both EXCITATION (secondarily, from pulmonary stretch receptor activity) and INHIBITION (primarily, from chemoreceptor activity) of Vascular Resistance.
At high altitude altitude, what is the NET effect?

The NTS is where the quite a few of the baroreceptors and chemoreceptors lead to. What is it, though?
NTS = ??

Hypoxia at high altitude results in ( Increased, Decreased ) Blood-brain barrier permeability and Cerebral ( Vasodilation, Vasoconstriction ).