OCR Gateway Biology B1

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What does the circulatory system do?
It carries oxygen and glucose in your blood to all of your body's cells so that energy can be released through aerobic respiration.
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What is systolic blood pressure?
The pressure in your arteries when your heart contracts.
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What is diastolic blood pressure?
The pressure in your arteries when your heart relaxes.
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How is a stroke coursed?
When a blood vessel bursts in the brain.
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When are heart attacks more likely?
When you have narrowed coronary arteries and thrombosis.
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What are fats made up of?
Fatty acids and glycerol.
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What are proteins made up of?
amino acids.
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Where are carbohydrates stored?
In the liver as glycogen.
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Where are proteins stored?
They aren't stored.
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What can obesity lead to?
Arthritis, heart disease, type 2 diabetes and breast cancer.
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Why is Kwashiorkor common in developing countries?
Because of over population and limited investment in agriculture.
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What are some examples of Infectious diseases?
Fungi(athletes foot), viruses(flu), bacteria(cholera) and protozoa(malaria)
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Name some defenses the body has aginst pathogens?
The skin acts as a barrier against microorganisms, the blood clots in wounds prevent microorganisms form entering the blood stream, the respiratory system is lined with cells that produce a liquid mucus that forms a mucus membrane to trap micros
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What are diseases coursed by and how can they be treated?
The are coursed by bacteria or fungi and can be treated using antibiotics.
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What are the three types of neurons and what do they do?
Sensory Neurons- carry nerve impulses from the receptors to your brain. Relay neurons- make connections between neurons inside your brain and spinal cord. Motor neurons- carry nerve impulses from your brain to your muscles and glands.
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What does your iris do?
It controls the amount of light that enters your eye and is the coloured part of your eye.
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What is the reflex action pathway?
Stimulus--->Receptor--->Sensory Neurone--->Relay Neurone--->Motor Neurone--->Effector--->Response.
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What is the voluntary action pathway?
Stimulus--->Receptor--->Sensory Neurone--->Brain--->Motor Neurone--->Effector--->Response.
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What type of lens can Longsightedness be corrected by?
Convex Lens.
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What type of lens can shortsightedness be corrected by?
Concave Lens.
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What do stimulants do?
Increase the brains activity.
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What do depressants do?
Decrease the brains activity
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What is Rehabilitation?
It is the process by which an addict learns to live without the drug.
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Other cards in this set

Card 2

Front

What is systolic blood pressure?

Back

The pressure in your arteries when your heart contracts.

Card 3

Front

What is diastolic blood pressure?

Back

Preview of the front of card 3

Card 4

Front

How is a stroke coursed?

Back

Preview of the front of card 4

Card 5

Front

When are heart attacks more likely?

Back

Preview of the front of card 5
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