Biology B1.2

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What is the scientific word for the changes in the world around you and give an example of where the receptors are usually found...
Stimuli... In the eyes/skin
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What makes up the Central Nervous System?
The brain and spinal cord
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What are reflexes for?
To avoid danger/harm and to take care of basic body functions
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Briefly describe a reflex arc.
Impulse passes from sensory -> CNS -> Relay -> motor -> effector organ to carry put response
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What are hormones?
Chemical substances that coordinate many processes within your body
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Name the 4 hormones involved in the central cycle..
Follicle stimulating hormone (FSH), Oestrogen, Luteinising hormone (LH) and Progesterone
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What do contraceptive pills contain and how do they work?
They contain Oestrogen and the pill inhibits FSH so no eggs mature in the ovaries
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What does IVF stand for and how does it help women?
In vitro fertilisation .. It helps women who have damaged fallopian tubes so it collects eggs and fertilise them, the embryo develops and they insert it back
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How do you loose salt and water from your body?
From sweat, urine and breathing out (only water)
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What temp must you keep your body and why?
37oC as it's the best temp enzymes work at
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What are plants sensitive to?
Light, water and gravity
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What is phototropism and gravitropism?
Response to light and response to gravity
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Other cards in this set

Card 2

Front

What makes up the Central Nervous System?

Back

The brain and spinal cord

Card 3

Front

What are reflexes for?

Back

Preview of the front of card 3

Card 4

Front

Briefly describe a reflex arc.

Back

Preview of the front of card 4

Card 5

Front

What are hormones?

Back

Preview of the front of card 5
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