BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
Gas Exchange & Transport
O2 is carried in blood bound to hemoglobin in red blood
cells
O2 binding to Hb is cooperative; S shaped binding
curve Hb binds O2 more tightly at high pH
Hb binds O2 less tightly when CO2 is high
Fetal Hb binds O2 more tightly than adult Hb, so the
embryo can take O2 from the mother’s blood
Carbon dioxide is carried in blood mostly as HCO3-
CO2 diffuses into red blood cells and is converted to
HCO3- by carbonic anhydrase
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
1
,BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
HCO3- leaves the red blood cells by exchanging with Cl-
Breathing is controlled by respiratory neurons in the
medulla
Blood Flow
Through
the Kidneys
Kidneys receive 20%
of cardiac output (1.0
L/min)
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
2
,BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
This is 600 mL/min of
plasma (Recall that
about 60% of the blood
is plasma)
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
3
,BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
Glomerular Filtration
In the kidneys,
plasma is
filtered into
the nephrons
Water, salts,
nutrients and
other desirable
material is taken
back
About 99% of
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
4
Gas Exchange & Transport
O2 is carried in blood bound to hemoglobin in red blood
cells
O2 binding to Hb is cooperative; S shaped binding
curve Hb binds O2 more tightly at high pH
Hb binds O2 less tightly when CO2 is high
Fetal Hb binds O2 more tightly than adult Hb, so the
embryo can take O2 from the mother’s blood
Carbon dioxide is carried in blood mostly as HCO3-
CO2 diffuses into red blood cells and is converted to
HCO3- by carbonic anhydrase
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
1
,BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
HCO3- leaves the red blood cells by exchanging with Cl-
Breathing is controlled by respiratory neurons in the
medulla
Blood Flow
Through
the Kidneys
Kidneys receive 20%
of cardiac output (1.0
L/min)
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
2
,BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
This is 600 mL/min of
plasma (Recall that
about 60% of the blood
is plasma)
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
3
,BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
Glomerular Filtration
In the kidneys,
plasma is
filtered into
the nephrons
Water, salts,
nutrients and
other desirable
material is taken
back
About 99% of
BIO 3200 HUMAN PHYSIOLOGY CHAPTER 19 BEST EXAM QUIDE 2022
4
