Homeostais and response

Question 1

What is Homeostasis

Answer 1

Homeostasis is baout maintaining an optimum internal environment in the body.

Question 2

What are the four key features to a good control system?

Answer 2

Stimulus,receptors,coordination centre, effectors

Question 3

What two systems are involved in the coordination and control of the internal environment?

Answer 3

1) The nervous system

2) The hormonal system

Question 4

Homeostasis needs to happen in response to internal and external changes?

Answer 4

• Blood sugar levels
• Body temperature
• pH of blood
• Carbon dioxide levels
• Blood volume

Question 5

Nervous system pathway

Answer 5

Stimulus
Receptor cells
Sensory neurone
Coordinator 
Motor neurone
Effectors

Question 6

Which sense organ detects which stimulus:

Answer 6

Skin-Pressure and temperature
Nose-Chemical smell
Eyes-Light waves
Tongue Chemical touch
Ear-Soundwaves

Question 7

what do the receptor cells do?

Answer 7

The receptor cells in our sense organs covert various stimuli into electrical impulses. These impulses are the transmitted through the nervous system.

Question 8

Sense organs

Answer 8

Skin
Ear
Nose
Eye

Question 9

Coordinators

Answer 9

Brain

Spinal cord

Question 10

Effectors

Answer 10

Salivary glands
Pancreas
Skeletal muscles

Question 11

What is the difference between the structure of the sensory and motor neurone?

Answer 11

The motor neurone have their cell body and nucleus towards the front of the cell while the sensory neurone has its cell body and nucleus in the middle of the cells