Hormones and Diabetes Flashcards

1
Q

Where are hormones produced?

A

Glands

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2
Q

What is a target organ?

A

The organ where a hormone has an effect.

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3
Q

How are hormones transported in the body?

A

In the blood

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4
Q

Which is faster, nervous response or endocrine response?

A

nervous response

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5
Q

Where is adrenalin produced?

A

Adrenal gland

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6
Q

Which response is caused by adrenalin?

A

fight or flight

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7
Q

What effect does adrenalin have on the heart?

A

Increases heart rate

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8
Q

What effect does adrenalin have on blood pressure?

A

Increases

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9
Q

What effect does adrenalin have on liver?

A

Stimulate liver to change glycogen into glucose to increase blood sugar

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10
Q

Where is thyroxine produced?

A

thyroid

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11
Q

What is a negative feedback mechanism?

A

A response in the body when conditions change from the ideal point in order to reverse the change.

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12
Q

What effect does thyroxine have in the body?

A

Stimulate metabolic rate (also growth and development)

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13
Q

What happens if thyroxine levels in the body are too low?

A

The hypothalamus releases TRH, the pituitary gland releases TSH which stimulates the thyroid to release more thyroxine.

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14
Q

What happens if thyroxine levels in the body are too high?

A

Release of TRH and TSH are inhibited, so the thyroid stops releasing more thyroxine.

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15
Q

Which hormone is released from the testes?

A

Testosterone

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16
Q

Which hormones are released from the ovaries?

A

oestrogen and progesterone

17
Q

What are hormones?

A

Chemical signals in the body.

18
Q

Why is the fight or flight response important?

A

Prepares the body to either flee from or fight a danger

19
Q

What is the purpose of insulin?

A

Reduce blood sugar levels.

20
Q

Which gland releases insulin

A

pancreas

21
Q

What is the target organ of insulin

A

liver and muscle cells

22
Q

What effect does insulin have on its target organs?

A

Causes them to take up excess sugar and store it as glycogen

23
Q

When is insulin released?

A

When blood sugar levels rise- e.g. after eating a meal

24
Q

What effect does glucagon have on the body?

A

Causes glycogen to be broken down into glucose

25
Q

When is glycogen released?

A

When blood sugar levels drop too low

26
Q

What is type 1 diabetes?

A

When the pancreas does not produce insulin

27
Q

What is type 2 diabetes?

A

When body cells do not respond to insulin produced by the pancreas

28
Q

How is type 1 diabetes managed?

A

insulin injections, carefully controlled diet

29
Q

How is type 2 diabetes managed?

A

Carefully controlled diet and exercise programme. Weight loss

30
Q

What are some risk factors for type 2 diabetes?

A

Obesity, poor diet, lack of exercise, genetics

31
Q

How is BMI calculated?

A

BMI = mass / height ^2