Given what you know about homeostasis, which type of feedback loop do you think vasoconstriction and vasodilation are classified as?

• A. Negative feedback loop.
• B. Positive feedback loop.

Answer: (A)

Verified step by step guidance

1. Understand the concept of homeostasis: Homeostasis is the body's ability to maintain a stable internal environment despite changes in external conditions.
2. Identify the role of feedback loops in homeostasis: Feedback loops are mechanisms that help maintain homeostasis by adjusting physiological processes.
3. Differentiate between negative and positive feedback loops: Negative feedback loops work to reverse a change and bring the system back to its set point, while positive feedback loops amplify a change.
4. Analyze vasoconstriction and vasodilation: Vasoconstriction is the narrowing of blood vessels, which increases blood pressure, while vasodilation is the widening of blood vessels, which decreases blood pressure.
5. Classify vasoconstriction and vasodilation: Since these processes work to stabilize blood pressure by counteracting changes, they are examples of negative feedback loops.