Biology 449 - Animal Physiology November 7, 2008

Lecture 25

Blood Gas Transport II

Oxygen transport (cont'd)

Oxygen affinity (conclusion)

Modifiers of oxygen affinity

Two pigment systems

Myoglobin

Fetal hemoglobin

Carbon Dioxide Transport

Control of Ventilation

Generation of rhythmic breathing

Regulation of blood gases

Effects of PCO2

Effects of PO2

Other factors affecting ventilation

Terms to Know

Oxygen carrying capacity

Oxygen affinity
Oxygen saturation curve

Bohr effect
Right-shift
2,3-DPG (2,3-diphosphoglycerate)

Two pigment system
Myoglobin (Mb)

Medulla
Respiratory center

Central pattern generator
Dorsal respiratory group
Ventral respiratory group

Medullary inspiratory neurons
Medullary expiratory neurons

Carotid bodies
Aortic bodies
Blood-brain barrier

Readings

Lectures 25-26: Chapter 11, pages 498-518
Lecture 27: Chapter 14, pages 612-638