Comprehensive Physiology Wiley Online Library

Comparative Mammalian Respiratory Control

Full Article on Wiley Online Library



Abstract

The sections in this article are:

1 Problems of Size
1.1 Metabolic Rate and Controller Gain
1.2 Scaling of Hemoglobin (Hb)‐O2 Affinity and Threshold of Hypoxic Ventilatory Response
1.3 Oscillations of Blood‐Borne Chemical Signals
1.4 Relative Influences of Various Arterial Chemoreceptors
2 Normal Variations of Body Temperature
2.1 Questions About Homeostasis
2.2 Panting and Nonpanting Responses
3 Activity Pattern
3.1 Exercise
3.2 Synchrony of Limb and Respiratory Movements
4 Mechanical Considerations: Optimization of Respiratory Frequency
5 Special Behavioral Features
5.1 Hibernation, Estivation, and Torpor
5.2 Sham Death
6 Variations of Habitat
6.1 High Altitude
6.2 Burrowing
6.3 Diving
6.4 Flying
6.5 Cave Dwelling
7 Unique Problems
7.1 Air Breathing With Very Immature Control Systems
7.2 Sluggish Motor Systems
7.3 Purring
8 Conclusion
Figure 1. Figure 1.

Comparison of mammalian and Poikilothermie blood pH values as function of body temperature. Upper shaded area represents region of constant pH‐pOH values in which all cold‐blooded vertebrate values fall; lower shaded area represents values characteristic of mammals.

From Reeves 143
Figure 2. Figure 2.

Relationship between ventilation () and O2 consumption (). A: during deep hibernation (○) and early arousal (•) in marmot.

Adapted from Malan et al. 110.] B: during entry into (○) and arousal from (•) torpor in pocket mouse. □, Mean euthermic and torpid values. BTPS, body temperature, ambient pressure, saturated with water vapor; STPD, standard temperature and pressure, dry; Tb body temperature. [Adapted from Withers 195
Figure 3. Figure 3.

Comparative ventilatory responses () to inspired CO2 for mole rat and white rat 11, hamster 30, human 20,38, dog 5, echidna 20,130, pocket gopher 38, and chipmunk 109.

Figure 4. Figure 4.

Ventilatory response to CO2 of some diving mammals. , minute ventilation; , alveolar partial pressure of CO2.

Adapted from refs. 15 (▪), 132 (Δ, □, •), and 149 (○, X)
Figure 5. Figure 5.

Arterial lactate concentrations during (solid line) and immediately after (dashed line) forced dives in beaver (•) 34 and harbor seal (Δ) 88 and immediately after free dives of various durations in Weddell seal (○) 94.



Figure 1.

Comparison of mammalian and Poikilothermie blood pH values as function of body temperature. Upper shaded area represents region of constant pH‐pOH values in which all cold‐blooded vertebrate values fall; lower shaded area represents values characteristic of mammals.

From Reeves 143


Figure 2.

Relationship between ventilation () and O2 consumption (). A: during deep hibernation (○) and early arousal (•) in marmot.

Adapted from Malan et al. 110.] B: during entry into (○) and arousal from (•) torpor in pocket mouse. □, Mean euthermic and torpid values. BTPS, body temperature, ambient pressure, saturated with water vapor; STPD, standard temperature and pressure, dry; Tb body temperature. [Adapted from Withers 195


Figure 3.

Comparative ventilatory responses () to inspired CO2 for mole rat and white rat 11, hamster 30, human 20,38, dog 5, echidna 20,130, pocket gopher 38, and chipmunk 109.



Figure 4.

Ventilatory response to CO2 of some diving mammals. , minute ventilation; , alveolar partial pressure of CO2.

Adapted from refs. 15 (▪), 132 (Δ, □, •), and 149 (○, X)


Figure 5.

Arterial lactate concentrations during (solid line) and immediately after (dashed line) forced dives in beaver (•) 34 and harbor seal (Δ) 88 and immediately after free dives of various durations in Weddell seal (○) 94.

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S. M. Tenney, D. F. Boggs. Comparative Mammalian Respiratory Control. Compr Physiol 2011, Supplement 11: Handbook of Physiology, The Respiratory System, Control of Breathing: 833-855. First published in print 1986. doi: 10.1002/cphy.cp030227