Question

a feedback mechanism in the human body is shown. based on this diagram, which two systems interact to maintain homeostasis?
the circulatory and endocrine system work together to keep blood sugar constant
the immune and circulatory systems work together to circulate blood through the pancreas
the nervous and excretory systems work together to convert glycogen into glucose
the nervous and reproductive system work together to produce insulin

Explanation:

The diagram shows the interaction between the pancreas and liver to regulate blood - glucose levels. The pancreas secretes glucagon when blood glucose is low to convert glycogen in the liver to glucose, and insulin when blood glucose is high to convert excess glucose to glycogen in the liver. This is a key example of how the endocrine (pancreas as an endocrine gland) and circulatory (blood circulation) systems work together to maintain homeostasis.

Answer:

C. The circulatory and endocrine systems work together to keep blood sugar constant