Lecture 1 - Homeostasis Flashcards
0
Q
What are the two ways that information is integrated?
A
Endocrine pathways
Neural pathways
1
Q
Describe the generalised homeostatic pathway
A
Stimulus Receptor / Sensor Afferent pathway Integrating centre Efferent pathway Effector Response --> negative feedback on receptor
2
Q
Differentiate between positive and negative feedback
A
Negative feedback:
- common
- returns variable to the set point
Positive feedback
- rare
- escalates the response
- moves the variable away from the set point
3
Q
Give an example of when positive and negative feedback is used
A
Positive:
- birth
- lactation
- blood clotting
- sodium channels in action potentials
Negative
- blood pressure
