Answered: The following graph shows partial…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question

The following graph shows partial saturation (Y) of myoglobin (Mb), adult hemoglobin (HbA) and fetal hemoglobin (HbF) as a function of partial oxygen pressure (in mmHg). Use it to answer the question: Fetal hemoglobin ( biological function: HbF) demonstrates lower p50 than adult hemoglobin (HbA). This adaptation has the following

A. Allow fetal hemoglobin form pentamer subunits.

B. HbF has lower affinity for for O2 compared to adult Hb

C. Allow fetal hemoglobin to effectively intercept oxygen from mother's hemoglobin.

D. Allow fetal hemoglobin to replace myoglobin in muscles

100%+
(HbF)
75%
Y
50%
25%
0%
+
Mb
HbF
25
50
75
HbA
100
Pao 2
[mm Hg]
pO2
19
27
myoglobine
Hemoglobia
Hemogiobin YHBA)

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