New B10 Nervous System

Question 1

What is your internal environment

Answer 1

The conditions inside your body that must be kept constant or you organs and reactions will not work ( enzymes become denatured )
This is maintained by homeostasis

Question 2

What is homeostasis

Answer 2

homeostasis is the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function in response to internal and external changes

Question 3

What is controlled in homeostasis

Answer 3

Body temp
Water levels
Glucose levels/ concentration

Question 4

What do all controlled systems in your body include

Answer 4

All control systems include:
• cells called receptors, which detect stimuli (changes in the environment)
• coordination centres (such as the brain, spinal cord and pancreas) that receive and process information from receptors
• effectors, muscles or glands, which bring about responses which restore optimum levels.

Question 5

How are the conditions controlled

Answer 5

Nervous or chemical responses

Question 6

Function of the nervous system

Answer 6

The nervous system enables humans to react to their surroundings and to coordinate their behaviour