1. Biology Revision – CHAPTER 5 – Coordination and Control Part 1
Responding to change
The nervous system uses electrical ………………………. to enable you to react to
your surroundings and ………………………… what you do.
Specialised cells called ………………………. detect changes in the environment
known as stimuli.
Impulses from receptors pass along …………………… neurones to the brain.
Impulses are sent from the brain to the effector organs along ……………………… neurones.
Sensory and motor Neurones
Describe the differences between Sensory and motor neurones?
Sensory Neurone
Motor Neurone
Reflex arc
Label the diagram below:
Endocrine System
Hormones
Hormones are ……………… messengers that help to control
and co-ordinate processes in your body.
They are secreted by ……………………. and carried around
your body to their target (effector) organs in the
…………………
They act slowly but their effects are …………… lasting.
The ………………… gland is often called the master gland as
it controls the other glands in the …………………… system.
Label the glands in the endocrine system 1 5 2 6 3 7 4 8

2. Controlling blood glucose Spread of scientific data
Biology Revision – CHAPTER 5 – Coordination and Control Part 2
Controlling blood glucose
If blood glucose levels increase the
………………………… detects it and
releases the hormone ……………………….
into the blood.
Insulin causes cells to ………………………
glucose from the blood.
In muscle and liver cells it is often
converted into ……………………
If blood glucose levels drop the
hormone …………………………… is released
to cause cells to release …………………..
back into the blood.
Menstrual Cycle
Contraception
Describe how barrier method contraception works.
How do oral contraceptives work?
Hormone
Where it is made?
What does it do?
What other hormones does it affect?
FSH
Oestrogen LH
Progesterone
Method
Advantages
Disadvantages
Condoms
Diaphragm
IUD
Diabetes
What is the difference between type 1 and type 2 diabetes?
How can type 1 and type 2 diabetes be treated?
Spread of scientific data
Calculating a …………… reduces the effect of random errors and gives a best …………………… of the true value. It is calculated by ………………… all the values and …………………. by the number of values.
The ………………. is a measure of the spread of the data. It is calculated by finding the difference between the ………………… and ……………………… values.