The passage describes coordination and homeostasis in the human body.
Complete the passage by writing a suitable word in each blank space.
Unlike the rapid, electrical signals of the nervous system which travel along [1] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________, the endocrine system relies on chemical messengers that travel more slowly through the blood.
To regulate blood glucose, the pancreas acts as both a detector and an endocrine gland. When blood glucose levels rise, the pancreas secretes the hormone [2] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________. This hormone travels to target organs such as the [3] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________, where it stimulates the conversion of glucose into insoluble [4] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ for storage.
Conversely, if blood glucose levels fall too low, the pancreas secretes the hormone [5] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________. This hormone triggers the breakdown of the stored carbohydrate, raising blood glucose levels back to normal. This type of self-regulating mechanism is known as [6] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ feedback.
In response to cold environments, thermoreceptors in the [7] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ and hypothalamus detect temperature changes. The hypothalamus coordinates a response where skeletal muscles undergo rapid contractions, a process called [8] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________, to generate heat. Simultaneously, arterioles near the skin surface undergo [9] ____________\text{\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore}____________ to reduce heat loss by radiation.
