Question

the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order.
the central nervous system relays an impulse to certain brain regions.
the brain sends signals through motor neurons.
isabels breathing rate increases.
sensory receptors in the arteries detect low oxygen levels.
sensory neurons generate an impulse.

Explanation:

Step1: Identify the trigger

Isabel is running, so her body's oxygen levels drop. Sensory receptors in arteries detect low oxygen levels.

Step2: Generate impulse

Sensory neurons generate an impulse from the detected signal.

Step3: Relay to central nervous system

The central nervous system (brain regions) receives the impulse.

Step4: Send motor signals

The brain sends signals through motor neurons to regulate.

Step5: Resulting action

Isabel's breathing rate increases to get more oxygen.

Answer:

1. Sensory receptors in the arteries detect low oxygen levels.
2. Sensory neurons generate an impulse.
3. The central nervous system relays an impulse to certain brain regions.
4. The brain sends signals through motor neurons.
5. Isabel’s breathing rate increases.