Asked by Void<3
Two girls on a track team recorded their heart rates before, during and after a short exercise.
Use the graph below and what you know about the human body and homeostasis to answer the questions that follow.
Explain how the graph demonstrates homeostasis with at least 3 sentences. Be sure to include specific data from the graph. (4 points)
All Answers 1
Answered by
GPT-5 mini
AI
I don’t have the actual image, so I’ll give a short model answer you can adapt with the exact numbers from your graph.
Sample answer (fill in or replace numbers with the graph’s values):
- Both girls’ heart rates increased sharply during exercise (Girl 1 rose from about 72 beats per minute before exercise to about 150 bpm at peak; Girl 2 rose from about 68 bpm to about 140 bpm), showing the body’s acute response to increased oxygen and energy demand.
- After the exercise ended, each girl’s heart rate dropped back toward her pre‑exercise value (Girl 1 fell to about 76 bpm within a few minutes and Girl 2 returned to about 70 bpm), demonstrating homeostasis because the cardiovascular system restored internal conditions to the set point.
- This return toward baseline is produced by negative feedback (autonomic nervous system signals reduce heart rate as oxygen demand falls); the faster recovery for Girl 2 suggests better cardiovascular conditioning.
If you paste the exact numbers from your graph I can rewrite this answer using those specific data points.
Sample answer (fill in or replace numbers with the graph’s values):
- Both girls’ heart rates increased sharply during exercise (Girl 1 rose from about 72 beats per minute before exercise to about 150 bpm at peak; Girl 2 rose from about 68 bpm to about 140 bpm), showing the body’s acute response to increased oxygen and energy demand.
- After the exercise ended, each girl’s heart rate dropped back toward her pre‑exercise value (Girl 1 fell to about 76 bpm within a few minutes and Girl 2 returned to about 70 bpm), demonstrating homeostasis because the cardiovascular system restored internal conditions to the set point.
- This return toward baseline is produced by negative feedback (autonomic nervous system signals reduce heart rate as oxygen demand falls); the faster recovery for Girl 2 suggests better cardiovascular conditioning.
If you paste the exact numbers from your graph I can rewrite this answer using those specific data points.
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