Cordination And Control-the Human Endocrine System Flashcards
What is a hormone?
Chemical messenger produced in glands and carried by the blood to specific organs in the body.
How is adrenaline released?
It is released by the adrenal glands
What is one of the target organs for adrenaline?
The heart- where it increases the heart rate
What happens to a hormone once it has been used?
It is destroyed by the liver
What can hormones control?
The body
Are the effects of hormones quicker or slower than the nervous system and how long do they last for?
The facts are much slower than the nervous system, but they last a lot longer
In the nervous system is the type of signal, electrical or chemical
Electrical (chemical at synapses)
Is the type of signal for a hormone , chemical or electrical?
Chemical
How is the signal transmitted in the nervous system?
By nerve cells – neurones
How Our signals transmitted for a hormone?
By the bloodstream
What are the effects of the nervous system?
Muscles and glands
What are the effects of hormones?
Target cells in particular organs
