Question

after running, ollies blood pressure was high. his nervous system sensed this and sent a message to decrease heart rate and blood flow. which system worked together with the nervous system? skeletal system circulatory system respiratory system digestive system

Explanation:

The circulatory system is responsible for blood flow and heart rate. When the nervous system senses high blood pressure and sends a message to decrease heart rate and blood flow, it is working with the circulatory system. The skeletal system provides support and protection. The respiratory system is for gas exchange. The digestive system is for food digestion.

Answer:

circulatory system