Question

Read the following description.

When your body becomes dehydrated, the brain detects the lack of water and signals the pituitary gland to secrete a hormone called ADH. ADH travels through the blood and
causes the kidneys to remove less water from the body.
This is an example of which of the following?
O negative feedback to amplify small signals
O positive feedback helping to maintain homeostasis
O negative feedback helping to maintain homeostasis
O positive feedback to amplify small signals

Answer 1

O negative feedback helping to maintain homeostasis

When the brain detects the lack of water in the body and signals the pituitary gland to secrete ADH, which causes the kidneys to remove less water from the body, this is an example of negative feedback. Negative feedback is a mechanism that helps to maintain homeostasis, or balance, in the body by counteracting changes in a particular condition or variable.

It is a mechanism that helps the body to return to its normal state by working in the opposite direction of a change. In this case, the decrease of water in the body triggers a response to conserve the water and return to normal hydration level.