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B1aB1aB1aB1a 1 1 1 1 Co-ordination and Control
1.21.21.21.2 Responding to change 1.31.31.31.3 Reflex actions
1.41.41.41.4 The menstrual cycle 1.51.51.51.5 Controlling
fertility artificially 1.61.61.61.6 Controlling conditions
B1a 1.1 Responding to Change
· It is the nervous system that enables you to react to your surroundings and co- ordinates your behaviour…

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B1a 1.2 Reflex Actions
· Automatic responses in your body happen when, for example, you touch something hot or sharp and
pull your hand away quickly before you even feel the pain. These automatic responses are called reflexes
· Reflexes help all animals avoid danger because they happen so fast…

Page 5

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being matured and the ovaries from releasing them ­ because without mature eggs, you can't get pregnant
· People who want to get pregnant but can't can now use science to do so ­ eggs can be removed from the
body and fertilised with sperm outside the body, and reinserted…

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Page 7

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B1a 1.5 Controlling Conditions
· Your body's internal environment (i.e. the conditions inside your body) is very important. Organs
cannot work properly if it keeps changing, so many of the processes taking place inside your body try to
keep things as constant as possible. This balancing act is known as…

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· In some parts of the world, there is a major lack of food, and people suffer from starvation, where you
become so thin, and you muscles begin to wear away. In developed countries, this problem happens if
people have the mental disorder anorexia (loss of appetite) nervosa
GCSE Science…

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Page 10

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B1a 2.3 Fast Food
· The amount of, and type of, fat you have in your body also affects you cholesterol levels
· Cholesterol is a substance made in the liver, which is transported around the body in blood. It is needed
to make cell membranes, sex hormones and other…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
B1aB1aB1aB1a 1 1 1 1 Co-ordination and Control
1.21.21.21.2 Responding to change 1.31.31.31.3 Reflex actions
1.41.41.41.4 The menstrual cycle 1.51.51.51.5 Controlling
fertility artificially 1.61.61.61.6 Controlling conditions
B1a 1.1 Responding to Change
· It is the nervous system that enables you to react to your surroundings and co- ordinates your behaviour…

Page 3

Preview of page 3

Page 4

Preview of page 4
B1a 1.2 Reflex Actions
· Automatic responses in your body happen when, for example, you touch something hot or sharp and
pull your hand away quickly before you even feel the pain. These automatic responses are called reflexes
· Reflexes help all animals avoid danger because they happen so fast…

Page 5

Preview of page 5
being matured and the ovaries from releasing them ­ because without mature eggs, you can't get pregnant
· People who want to get pregnant but can't can now use science to do so ­ eggs can be removed from the
body and fertilised with sperm outside the body, and reinserted…

Page 6

Preview of page 6

Page 7

Preview of page 7
B1a 1.5 Controlling Conditions
· Your body's internal environment (i.e. the conditions inside your body) is very important. Organs
cannot work properly if it keeps changing, so many of the processes taking place inside your body try to
keep things as constant as possible. This balancing act is known as…

Page 8

Preview of page 8
· In some parts of the world, there is a major lack of food, and people suffer from starvation, where you
become so thin, and you muscles begin to wear away. In developed countries, this problem happens if
people have the mental disorder anorexia (loss of appetite) nervosa
GCSE Science…

Page 9

Preview of page 9

Page 10

Preview of page 10
B1a 2.3 Fast Food
· The amount of, and type of, fat you have in your body also affects you cholesterol levels
· Cholesterol is a substance made in the liver, which is transported around the body in blood. It is needed
to make cell membranes, sex hormones and other…

Comments

No comments have yet been made