The Ednocrine System

Question 1

What is a hormone?

Answer 1

A chemical messenger

Question 2

What is a chemical messenger called?

Answer 2

Hormone

Question 3

What is a hormone produced by?

Answer 3

Endocrine gland

Question 4

What does an endocrine gland do?

Answer 4

Produce hormones

Question 5

Where do hormones get secreted into?

Answer 5

The blood

Question 6

What are hormones carried in?

Answer 6

Plasma

Question 7

What does a hormone do? (2)

Answer 7

• Causes a response

- Control body processes that need adjustment

Question 8

Where do hormones cause responses?

Answer 8

Specific target organs

Question 9

What do exocrine glands do?

Answer 9

Secrete non-hormone substances, not into the blood

Question 10

What secretes non-hormone substances, not into the blood

Answer 10

An exocrine gland

Question 11

What is it called when conditions in the body are kept constant?

Answer 11

Homeostasis

Question 12

What are target cells? (2)

Answer 12

• Have a protein on surface membrane called a receptor

- Receptor has a complementary shape to the hormone

Question 13

Why are hormones supplied to all cells?

Answer 13

They are transported in the blood

Question 14

What makes up the endocrine system? (2)

Answer 14

• endocrine glands

- hormones

Question 15

What regulates other hormones?

Answer 15

Hypothalamus

Question 16

What does the hypothalamus do?

Answer 16

Regulates other hormones

Question 17

What does the pituitary gland release? (4)

Answer 17

• FSH
• LH
• Oxytocin
• Growth Hormone

Question 18

What releases:

• FSH
• LH
• Oxytocin
• Growth Hormone

Answer 18

Pituitary Gland

Question 19

What does the Thyroid release?

Answer 19

Thyroxine

Question 20

What releases thyroxine?

Answer 20

The thyroid

Question 21

What does thyroxine do?

Answer 21

Regulates metabolism

Question 22

What regulates metabolism?

Answer 22

Thyroxine

Question 23

What does the adrenal gland release? (2)

Answer 23

• Adrenalin

- Cortisol

Question 24

What releases:

• Adrenalin
• Cortisol

Answer 24

The adrenal gland

Question 25

What do the ovaries release? (2)

Answer 25

- Oestrogen | - Progesterone

Question 26

What releases: - Oestrogen - Progesterone

Answer 26

Ovaries

Question 27

What do the ovaries do?

Answer 27

Controls secondary sexual characteristics

Question 28

What do the testes do?

Answer 28

Controls secondary sexual characteristics

Question 29

What controls secondary sexual characteristics?

Answer 29

Ovaries and testes

Question 30

What does progesterone do?

Answer 30

Maintains uterus and inhibits LH

Question 31

What maintains uterus and maintains LH?

Answer 31

Progesterone

Question 32

What does oestrogen do?

Answer 32

Causes lining of uterus to build up and inhibits FSH

Question 33

What causes lining of uterus to build up and inhibits FSH?

Answer 33

Oestrogen

Question 34

What does FSH do?

Answer 34

Stimulates egg to mature and ovaries to secrete oestrogen

Question 35

What stimulates egg to mature and ovaries to secrete oestrogen?

Answer 35

FSH

Question 36

What does LH do?

Answer 36

Triggers ovulation

Question 37

What triggers ovulation?

Answer 37

LH

Question 38

What plant hormone ripens growth?

Answer 38

Ethene

Question 39

What plant hormone promotes stem elongation?

Answer 39

Gibberellins

Question 40

What plant hormone is used to control dormancy?

Answer 40

Gibberellins

Question 41

What plant hormone promotes root growth?

Answer 41

Auxins

Question 42

What plant hormone delays ripening?

Answer 42

Auxins

Question 43

What plant hormone kills weeds?

Answer 43

Auxins

Question 44

What plant hormone produces seedless fruit?

Answer 44

Auxins

Question 45

What does ethene do? (1)

Answer 45

-Ripens fruit

Question 46

What do gibberellins do? (2)

Answer 46

- Promote stem elongation | - Control dormancy

Question 47

What do auxins do? (4)

Answer 47

- Promotes root growth - Delays ripening - Kills weeds - Produces seedless fruit

Question 48

Nervous control or Hormonal control? Transmission is by chemicals in the blood

Answer 48

Hormonal

Question 49

Nervous control or Hormonal control? Speed of communication is slower

Answer 49

Hormonal

Question 50

Nervous control or Hormonal control? Transmission is by electrical impulse

Answer 50

Nervous

Question 51

Nervous control or Hormonal control? Speed of communication is very fast

Answer 51

Nervous

Question 52

Nervous control or Hormonal control? Targets a precise area

Answer 52

Hormone

Question 53

Nervous control or Hormonal control? Usually targets a large area eg muscle, gland

Answer 53

Nervous

Question 54

Name the 8 glands

Answer 54

``` Pancreas Testes Ovaries Thyroid Pituitary Adrenal Hypothalamus Parathyroid ```

Question 55

Effect of adrenaline on eyes

Answer 55

Dilated pupils

Question 56

Effect of adrenaline on heart rate

Answer 56

Increase

Question 57

Effect of adrenaline on air passage of lungs

Answer 57

Expand

Question 58

Effect of adrenaline on metabolism

Answer 58

Maximise glucose levels in blood

Question 59

Effect of adrenaline on blood

Answer 59

Redistribution to maximise oxygen levels

Question 60

How does birth control work (3)

Answer 60

1. Stop sperm meeting egg 2. Prevent egg from developing 3. Not all owning implantation