The maintenance of a constant internal environment

What does glucagon do when blood glucose is too low?

Causes the liver to convert glycogen back into glucose

What is the correct order of a reflex arc?

Receptor, sensory neurone, relay neurone, motor neurone, effector

It does not wait for the brain; the impulse passes through the spinal cord

A muscle or gland that carries out the response

It uses chemical messengers carried in the blood and has a longer-lasting effect

It prepares the body for action by increasing heart rate and breathing rate

The removal of waste products made by the body's chemical reactions

Filtration of the blood then reabsorption of useful substances

A change from the set point triggers a response that returns the level towards normal

13questions. Pick an answer and you'll see why right away.

What is homeostasis?
Which hormone lowers blood glucose when it is too high?
What does glucagon do when blood glucose is too low?
Which organ releases both insulin and glucagon?
What is the correct order of a reflex arc?
Why is a reflex action fast?
What is an effector in the nervous system?
Which is a feature of hormonal control compared with nervous control?
What effect does adrenaline have on the body?
What is excretion?
What are the two main stages by which the kidney produces urine?
Which substance is reabsorbed back into the blood in the kidney rather than leaving in the urine?
Negative feedback in homeostasis means that: