Question

question 1-10
the nervous system
central ns
(the body’s master control unit)
peripheral ns
(the body’s link to the outside world)
the autonomic nervous system monitors processes within the body to maintain internal balance. choose 3 systems that work to regulate heart rate.
□ excretory- responsible for removing cellular and bodily waste
□ circulatory- responsible for transporting blood throughout the body
□ digestive- responsible for digesting food molecules that will be delivered to cells
□ nervous- responsible for monitoring and maintaining homeostasis
□ muscular- responsible for bodily movement through contractions and relaxation for muscles
7th grade science q2 benchmark 2025-26
question 10 of 15
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Explanation:

To solve this, we analyze each option:

• Excretory: Removes cellular/bodily waste (matches its function).
• Circulatory: Transports blood (matches its function).
• Nervous: Monitors/maintains homeostasis (autonomic NS is part of nervous system, which regulates heart rate and homeostasis).
• Digestive digests food, Muscular handles movement—these don't relate to heart rate regulation/homeostasis monitoring for this question. So the three systems are Excretory, Circulatory, and Nervous.

Answer:

• Excretory - responsible for removing cellular and bodily waste
• Circulatory - responsible for transporting blood throughout the body
• Nervous - responsible for monitoring and maintaining homeostasis