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Regulation

Low blood pressure Rise in blood pressure

Negative feedback

Increased heart rate
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Pressure sensitive receptor

Sympathetic
nervous system

Brain Hindbrain interpret the effect
Figure 5.3: Negative feedback mechanism in blood pressure control

Exercise 5.2 Citing examples for the above
conditions evaluate the significance
1. Examine the role of negative and of feedback mechanisms in medical
positive feedback mechanisms in interventions.
homeostasis and compare their
effects on physiological stability. 4. Recent studies highlight the gut
microbiome’s role in maintaining
2. A patient suffering from severe
dehydration has a low blood volume homeostasis. As a healthcare
and decreased blood pressure. Using advocate, justify the importance of
your understanding of homeostatic gut health in overall well-being and
mechanisms, propose two lifestyle changes that
individuals should adopt to support
(a) Identify the receptors, control center, their gut microbiota for improved
and effectors involved in this process. homeostasis.

(b) explain how the body would respond
to restore normal blood pressure and Types of regulation
hydration levels. There are several mechanisms that are used to

3. The treatment of conditions such maintain stable internal body environment.
as diabetes, hypertension, and These include temperature regulation
hemorrhage rely on understanding of (thermoregulation), osmoregulation and
homeostatic feedback mechanisms. blood sugar regulation.

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