Biology 449 - Animal Physiology August 29, 2008

Lecture 2 - Basic Concepts II

Negative feedback loops (cont'd)

Biological examples

Feed forward mechanisms

Changing setpoints

Limitations

Efferent pathways - nerves vs. hormones

Positive feedback

Description

Biological example

Alternatives to physiological regulation

Behavior

Conformation

 

Terms to Know

Hypothalamus
Thermoregulation
Basal Metabolic Rate

Parathyroid gland
Parathyroid hormone

Feed forward
Proportional response

Positive Feedback

Conformation

 

 

Readings

Lectures 1 & 2: Chapter 1
You may also find it useful to 
review aspects of chapter 2
Lecture 3: Chapter 3, pages 68-85