The passage describes the coordination and response mechanisms in humans, focusing on homeostasis and glucose regulation.
Complete the passage by writing a suitable word in each blank space.
The human body coordinates its responses using both the nervous system and the endocrine system. While the nervous system transmits electrical impulses along [1] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________, the endocrine system relies on chemical messengers called hormones.
The concentration of glucose in the blood is monitored and controlled by the [2] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________. When blood glucose concentration rises too high, this organ secretes the hormone [3] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ into the blood.
This hormone travels to its target organs, primarily the [4] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ and muscle cells, where it stimulates them to absorb glucose and convert it into an insoluble storage carbohydrate called [5] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________.
If blood glucose levels fall too low, the same organ secretes another hormone called [6] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________. This causes the stored carbohydrate to be broken down back into [7] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ and released into the bloodstream. This is an example of [8] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ feedback, which works to restore a stable internal environment, a process known as [9] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________.
