ANIMAL PHYSIOLOGY
CHEMICAL SIGNALS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The stimulus alters the original effect of the stimulus.
|
|
|
the response alters the original effect of the stimulus.
|
|
|
the response reduces the effect of the original stimulus.
|
|
|
the response increases the effect of the original stimulus.
|
Detailed explanation-1: -Maintenance of homeostasis usually involves negative feedback loops. These loops act to oppose the stimulus, or cue, that triggers them. For example, if your body temperature is too high, a negative feedback loop will act to bring it back down towards the set point, or target value, of 98.6 ∘ F .
Detailed explanation-2: -Homeostasis is generally maintained by a negative feedback loop that includes a stimulus, sensor, control centre, and effector . Negative feedback serves to reduce an excessive response and to keep a variable within the normal range. Negative feedback loops control body temperature and the blood glucose level.
Detailed explanation-3: -Answer and Explanation: The correct answer: The one option that is true for positive feedback systems is a. They operate in such a way that the initial stimulus is enhanced and increased. The positive feedback system is built in such a manner that it causes the initial stimulus to be amplified.
Detailed explanation-4: -Homeostasis does not directly influence the external environment, but rather is influenced by the external environment. The answer is b. Homeostasis involves the influencing of the external environment.