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 start of the process

The first event should be the detection of low oxygen levels by sensory receptors. So the first tile is "Sensory receptors in the arteries detect low oxygen levels."

Step2: Next, sensory neurons generate an impulse

After detection, sensory neurons generate an impulse. So the second tile is "Sensory neurons generate an impulse."

Step3: Then, the central nervous system relays the impulse

The impulse is then relayed by the central nervous system to the brain. So the third tile is "The central nervous system relays an impulse to certain brain regions."

Step4: Brain sends signals to motor neurons

After receiving the impulse, the brain sends signals to motor neurons. So the fourth tile is "The brain sends signals through motor neurons."

Step5: Finally, breathing rate increases

The signals from motor neurons cause the breathing rate to increase. So the fifth tile is "Isabel's breathing rate increases."

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.