Question

match each stage of a feedback mechanism to its description. move one answer to each box.
sensor (receptor)
control center
stimulus
effector
response
the change in the internal or external environment
the organ or structure producing a response the action taken by effectors

Explanation:

To solve the matching, we analyze each term:

• sensor (receptor): Typically detects stimuli, but since the given descriptions don't fully match (maybe a partial set here), wait, the provided descriptions are: "the change in the internal or external environment" (stimulus), "the organ or structure producing a response" (effector), "the action taken by effectors" (response). Wait, maybe the missing descriptions (since the problem's right boxes are dashed, maybe the user missed some, but based on standard feedback mechanisms:
• stimulus: "the change in the internal or external environment" (matches as stimulus is the change that triggers the mechanism).
• effector: "the organ or structure producing a response" (effectors carry out the response, so they are the structures that act).
• response: "the action taken by effectors" (response is the action resulting from effectors).
• For sensor (receptor): detects the stimulus (but no matching description here, maybe the problem has incomplete descriptions, but assuming the given three descriptions and the terms, let's match the given ones:
• stimulus → "the change in the internal or external environment"
• effector → "the organ or structure producing a response"
• response → "the action taken by effectors"
• For sensor (receptor) and control center, maybe the problem's description set is incomplete, but with the given three descriptions, we match the three terms: stimulus, effector, response.

Answer:

• sensor (receptor): [No matching given description (problem may have missing info)]
• control center: [No matching given description (problem may have missing info)]
• stimulus: the change in the internal or external environment
• effector: the organ or structure producing a response
• response: the action taken by effectors

(Note: The problem's right - hand dashed boxes seem to be missing some descriptions. The above is based on the standard definitions of feedback mechanism components and the given three descriptions.)