B10-the Human Nervous System

Question 1

What is homeostasis?

Answer 1

The regulations of the internal conditions of cells to maintain optimum conditions for functioning in response to internal and external changes.

Question 2

Internal conditions that are controlled include: (3)

Answer 2

Body temperature
The water content of the body
Blood glucose concentration

Question 3

What are receptors?

Answer 3

Cells that detect changes in the internal or external environment. These changes are known as stimuli. Receptors may be part of the nervous or the hormonal control systems of the body.

Question 4

Coordination centres:

Answer 4

Areas that receive and process the information from the receptors. They send out signals and coordinate the response of the body. They include the brain, which acts as a coordination centre for both the nervous system and parts of the hormonal system, the spinal cord, and some organs such as the pancreas