LOOK OVER THS

Question 1

LOOK AT A BRAIN DIAGRAM

Answer 1

NOW

Question 2

LOOK AT AN EYE DIAGRAM

Answer 2

NOW

Question 3

What does the medulla do?

Answer 3

Controls unconscious activities like breathing and heart rate.

Question 4

What does the hypothalamus do?

Answer 4

Maintains body temperature and produces hormones that control the pituitary gland

Question 5

What does the cerebrum do?

Answer 5

Controls memory,consciousness,language and intelligence

Question 6

What does the cerebellum do?

Answer 6

Responsible for muscle coordination

Question 7

What does the pituitary gland do?

Answer 7

Produces many important hormones ( some involved in menstrual cycle)

Question 8

Why does the pituitary gland work with in the brain?

Answer 8

The hypothalamus

Question 9

What is the role of the cornea?

Answer 9

Refracts light into the eye

Question 10

What is the role of the iris?

Answer 10

Controls how much light enters the pupil ( the hole in the middle)

Question 11

What is the role of the lens?

Answer 11

Refracts light as well as the cornea and focuses it into the retina

Question 12

What is the retina?

Answer 12

The light sensitive part and its covered in receptors called rods and cones which detect light

Question 13

What type of light are rods in the eye sensitive to?

Answer 13

Rods are more sensitive in dim light but cant sense colour

Question 14

What type of light are cones in the eye sensitive to?

Answer 14

Cones are sensitive to different colours but are not so good in dim light

Question 15

What is the role of the optic nerve?

Answer 15

Carries impulses from the retinas receptors to the brain.

Question 16

What is adrenaline?

Answer 16

A hormone released by the body that prepares the body for ‘fight or flight’

Question 17

What gland produces adrenaline?

Answer 17

The adrenal gland

Question 18

How does the body control the levels of hormones in the body?

Answer 18

Negative feedback system

Question 19

What is thyroxine and what produces it?

Answer 19

A hormone released by the thyroid gland and it regulates the metabolic rate of the body.

Question 20

What is testosterone?

Answer 20

The main male sex hormone. It stimulates sperm production.

Question 21

Where is testosterone produced?

Answer 21

The testes

Question 22

What is oestrogen?

Answer 22

The main female sex hormone that is involved in the menstrual cycle and promotes female sexual characteristics

Question 23

Where is oestrogen produced?

Answer 23

The ovaries

Question 24

What is progesterone?

Answer 24

A hormone produced by the ovaries that helps to support pregnancy

Question 25

What is FSH? And what does it stand for

Answer 25

- Follicle Stimulating Hormone | - Helps to control the menstrual cycle

Question 26

What is LH? What does it stand for?

Answer 26

- Luteinising hormone | - Hormone that helps control the menstrual cycle

Question 27

What gland produces LH?

Answer 27

The pituitary gland

Question 28

What is FSHs role in the menstrual cycle?

Answer 28

Causes the egg to mature in on of the ovaries and stimulates the production of oestrogen.

Question 29

What is oestrogens role in the menstrual cycle?

Answer 29

- Causes the lining of the uterus to thicken and grow. - Stimulates production of LH - Inhibits the production of FSH (so that one egg is released by cycle)

Question 30

What is the role of LH in the menstrual cycle?

Answer 30

- Stimulates the release of an egg at day 14 | - Indirectly stimulates progestrone production

Question 31

What is the role of progesterone in the menstrual cycle?

Answer 31

- Maintains the lining of the uterus | - Inhibits production of FSH and LH

Question 32

Name 3 types of contraception that effects progesterone.

Answer 32

ANY THREE OF: - Implants - Injection - Mini pill - IUS (Intrauterine system)

Question 33

Name a contraception method that effects Progesterone AND oestrogen

Answer 33

ANY ONE OF: - Combined pill - Patch

Question 34

Name a barrier contraception method and how effective it is (%)

Answer 34

ANY ONE OF: - Condom (98%) - Female condom (95%) - Diaphragm (92-96%)

Question 35

What are auxins?

Answer 35

A plant hormone that controls growth at the tips of roots and shoots.

Question 36

Are shoots positively or negatively phototrophic?

Answer 36

Positively

Question 37

Are roots positively or negatively phototrophic?

Answer 37

Negatively

Question 38

What is gibberellin?

Answer 38

A plant hormone that stimulates seed germination, stem growth and flowering

Question 39

How does gibberellin stimulate stem growth?

Answer 39

Stem elongation

Question 40

What is ethene?

Answer 40

It is a plant hormone that is produced by aging leaves. It stimulates cells that connect the leaf to the rest of the plant. It also releases enzymes that help ripen fruit