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GCSE AQA Science Biology > B11:Hormonal Coordination > Flashcards

B11:Hormonal Coordination Flashcards

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1
Q

Hormones travel_____ than nervous impulses but hormones can cause ________

A

Slower

Longer lasting effects

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2
Q

What is the endoctrine system composed of?

A

Glands which secrete hormones directly into the bloodstream

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3
Q

What does secrete mean

A

Deposit

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4
Q

How are hormones(chemical messengers ) transported to target organs?

A

Through the blood stream

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5
Q

What does the pancrease do if blood glucose concentration is too high?

A

It produces insulin

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6
Q

What does the pacrease do if it detects blood glucose levels are too low?

A

It produces glucagon

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7
Q

What is/causes type 1 Diabetes?

A

Little/no insulin produced by the pancrease

-blood glucose levels remain high as glucose can’t get into the cells

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8
Q

What is/causes type 2 Diabetes?

A

Pancreas still makes insulin but the body stops responding to it

-blood glucose levels stay high

(Insulin resistance)

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9
Q

FOLP

A

FSH
Oestrogen
LH
Progesterone

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10
Q

What does FSH do?

A
  • matures egg

- stimulatee oestrogen

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11
Q

What does Oestrogen do?

A

-inhibits FSH

Stimulates LH

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12
Q

What does LH do?

A
  • ovulation
  • inhibits oestrogen
  • stimulates progesterone
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13
Q

What does Pogesterone do?

A

Increases the lining of the womb

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14
Q

Stages of IVF(in vitro Fertilisation)

A
  • hormones given to stimulate ovaries to make lots of eggs
  • eggs removed from overies through surgery
  • sperm collected
  • sperm and egg fertilise
  • 2-4 fertilised eggs placed in womb
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15
Q

What is the pituary gland?

A

The master gland, it secretes several hormones into the blood

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16
Q

How can type 1 diabetes be treated?

A

It is controlled by injecting insulin into the body

17
Q

How is type 2 diabetes treated?

A

Treated by a carbohydrate-conteolled diet and taking more exercises(if this doesn’t work more drugs are needed

18
Q

Where is thyroxine from?

A

The thyroid gland

19
Q

What does thyroxine do?

A

Stimulates the basal metaboilc rate

20
Q

Where is adrenaline produced?

A

The adrenal gland

21
Q

What dpes adrenaline do?

A

It increases the heart rate and boosts dilivery of oxygen and glucose to the brain and muscles, preparing the body for “fight and flight”

22
Q

What is the difference between thyroxine and adrenaline?

A

It is controlled by negative feedback

23
Q

What is blood glucose concentration monitored and controlled by?

A

Pancrease

24
Q

What does pancrease produce?

A

Insulin

25
Q

What does insulin do?

A

Allows glucose to move from the blood into the cells and to be stored as glycogen in the liver and muscles

26
Q

What does the pancrease also produce?

A

Glucagon

27
Q

What does glucagon do?

A

Allpws glycogen to be converted back into glucose and released into the blood

28
Q

How is type 1 diabetes normally controlled by?

A

Injecting insulin

29
Q

What is the difference between thyroxine and adrenaline?

A

Thyroxine is controlled by negative feedback, adrenaline is not

30
Q

What is negative feebacj?

A

A cycle to control glucose levels(interaction or insulin and glucagon)

31
Q

What does tesosterone so?

A

Stimulates sperm production

32
Q

Why is the pituary gland claled the master gland?

A

It releases hormones which act on other glands causing them to release hormones and bring about change

33
Q

What does insulin do to the body?

A

Makes glucose move from blood to muscle cells and liver

34
Q

What is thyroxine produced as a result off?

A

TSH

35
Q

What does a negative feeback system do for thyroxine?

A

Keeps the amount of thyroxine in the blood at a good level

Too high: secretion or TSH from pituary gland is inhibited

Too low: pituary gland increases TSH

GCSE AQA Science Biology (14 decks)

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