Art-labeling Activity: Negative Feedback in the Control of Body Temperature Control Center Information affects Normal temperature disturbed Effectors Receptors STIMULUS: Body temperature rises RESPONSE: Increased heat loss, body temperature drops Normal temperature restored Homeostasis Sends commands to Thermoregulatory center in brain
The Correct Answer and Explanation is:
The correct sequence for this art-labeling activity illustrating negative feedback in body temperature regulation is:
- STIMULUS: Body temperature rises
- Receptors
- Information affects
- Control Center (Thermoregulatory center in brain)
- Sends commands to
- Effectors
- RESPONSE: Increased heat loss, body temperature drops
- Normal temperature restored
- Homeostasis
Explanation:
This diagram depicts the process of thermoregulation, a classic example of negative feedback used by the human body to maintain internal stability, or homeostasis. When a stimulus, such as elevated body temperature, disrupts the normal set point, sensory receptors detect this change. These thermoreceptors are located in both the skin and the hypothalamus. They sense the rise in temperature and transmit the information to the control center.
The control center in this feedback loop is the thermoregulatory center, located in the hypothalamus of the brain. Upon receiving input, the hypothalamus integrates the information and initiates a response by sending neural signals to effectors throughout the body.
Effectors include sweat glands, blood vessels in the skin, and other structures involved in heat dissipation. Their response leads to increased heat loss through mechanisms such as sweating and vasodilation, where blood vessels widen to allow more blood—and therefore heat—to be released at the body’s surface.
As these responses reduce the body temperature back to normal levels, the initial stimulus diminishes. Once the set point is restored, the receptors no longer signal the control center, halting the response. This cessation ensures that the system does not overcorrect, illustrating the self-limiting nature of negative feedback.
By continuously monitoring and adjusting internal conditions in this way, the body preserves a stable internal environment, which is vital for the function of enzymes and cellular processes.
