Which three of the following are examples of feedback mechanisms which help maintain homeostasis?
- Answer: The correct answer is-
- C. Insulin secretion in response to high blood sugar.
- D.
- F.
- Homeostasis can be described as a tendency of living organisms to maintain a state of stable internal environment.
- Thus, option C), D), and F) are the examples of feedback mechanisms that help in maintaining homeostasis.
What is shivering an example of?
Shivering (also called shuddering) is a bodily function in response to cold in warm-blooded animals. When the core body temperature drops, the shivering reflex is triggered to maintain homeostasis. Skeletal muscles begin to shake in small movements, creating warmth by expending energy.
How does negative feedback regulate body temperature?
Negative feedback – example Body temperature is controlled by the hypothalamus in the brain. If the hypothalamus detects that the body is too hot, the response is that the body begins to sweat to try and reduce the temperature back to the correct level.
What are the effects of negative feedback?
In negative feedback, the feedback energy (voltage or current), is out of phase with the input signal and thus opposes it. Negative feedback reduces gain of the amplifier. It also reduce distortion, noise and instability. This feedback increases bandwidth and improves input and output impedances.
Which of the following is an example of a negative feedback effect on global climate?
-The decrease in clouds in a cooling climate acts as a negative feedback by reflecting less sunlight, making it warmer. -Clouds reflect incoming sunlight, so they are always a negative feedback to climate. Snow and ice reflect incoming solar radiation.
How does the negative feedback mechanism affect the menstrual cycle?
Phases of the Menstrual Cycle. During the first half of the cycle, negative feedback keeps levels of FSH, LH, estrogen, and progesterone relatively stable. During ovulation, positive feedback causes a burst of FSH, LH, and estrogen.
How does negative feedback happen when estrogen is released?
Progesterone eventually begin to rise as well. Up to a certain point, the estrogen being produced exerts negative feedback on both GnRH and gonadotropin secretion. The luteal cells produce more progesterone than estrogen, so blood levels of progesterone rise higher than estrogen levels after ovulation.
What happens to the response to a stimulus in a negative feedback mechanism?
A negative feedback depresses the stimulus to shut off or reduce the effector response, whereas a positive feedback has the effect of increasing the effector response.
How does negative feedback affect hormone levels in the blood?
Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.
Does HGH cause weight gain?
The dose is 4-6 mg, based upon body weight. HGH alone is likely to result in weight gain that is primarily fat, while adding a regimen of resistance exercise, such as weight training, can help build lean body mass.