4.1 HB-O2 Dissociation Curve Flashcards by Miguel Acosta | Brainscape

Q

HB-O2 Dissociation Curve describes how the affinity of hemoglobin for oxygen relates to the partial pressure of _______

A

Oxygen (PO2)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Shape of the Curve?

A

Sigmoidal Shape (S shape)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Normally, a PO2 of approx. __mmHg results in 50% of oxygen saturation of the Hgb molecule (P50 value)

A

27mmHg

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

__-axis: Partial pressure of Oxygen
__-axis: Hb-O2 Saturation

A

X
Y

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Decrease PCO2

a. Shift to the left
b. Shift to the right

A

a

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Decrease Temp

a. Shift to the left
b. Shift to the right

A

a

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Decrease H/Alkalosis

a. Shift to the left
b. Shift to the right

A

a

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Increase PO2

a. Shift to the left
b. Shift to the right

A

b

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Increase Temp

a. Shift to the left
b. Shift to the right

A

b

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Increase H/Acidosis

a. Shift to the left
b. Shift to the right

A

b

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Decrease 2-3 DPG

a. Shift to the left
b. Shift to the right

A

a

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Increase in 2-3 DPG

a. Shift to the left
b. Shift to the right

A

b

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Oxygen affinity to Hbg is increased

a. Shift to the left
b. Shift to the right

A

a

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Oxygen affinity to Hbg is Decreased

a. Shift to the left
b. Shift to the right

A

b

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Oxygen affinity to Tissue is increased

a. Shift to the left
b. Shift to the right

A

b

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

HB-O2 DISSOCIATION CURVE:

Oxygen affinity to Tissue is Decreased

a. Shift to the left
b. Shift to the right

A

a

Q

HB-O2 DISSOCIATION CURVE:

Increase Hb F in adult

a. Shift to the left
b. Shift to the right

A

a

Q

HB-O2 DISSOCIATION CURVE:

Fever

a. Shift to the left
b. Shift to the right

A

b

Q

HB-O2 DISSOCIATION CURVE:

Increase Methemoglobin

a. Shift to the left
b. Shift to the right

A

a

Q

HB-O2 DISSOCIATION CURVE:

Increase Carboxyhemoglobin

a. Shift to the left
b. Shift to the right

A

a

Q

HB-O2 DISSOCIATION CURVE:

Hypoxic conditions

a. Shift to the left
b. Shift to the right

A

b

Q

HB-O2 DISSOCIATION CURVE:

Altitude areas

a. Shift to the left
b. Shift to the right

A

b

Q

HB-O2 DISSOCIATION CURVE:

Exercise

a. Shift to the left
b. Shift to the right

A

b