human, plant and reproductive hormones, with a quiz at the end.

1. Hormones
Reproductive, plant, human

2. Reproductive…
Human egg

3. Reproductive
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Pituitary Gland releases FSH
Follicle-stimulating hormone (FSH)
FSH stimulates women’s eggs
Ovaries release oestrogen
Oestrogen causes ovary lining to thicken
Pituitary gland releases LH
Luteinizing hormone
LH stimulates egg release
When eggs are unfertilised, periods occur

4. Reproductive Terms
Name of hormone:
Made in the…
Activity:
FSH
Pituitary Gland
Causes egg to mature
Oestrogen
Ovaries
Causes line to thicken in
first half of the cycle
LH
Pituitary Gland
Stimulates ovulation
(release of the egg from
the ovary)
Stimulate means…. Encourage activity
What is the correct term for the release of the egg?
Inhibit means… To stop process or production
secretion

5. Gland hormone organ
Gland
Hormone
Target organs
Ovary
Oestrogen
Ovaries, uterus
Ovary
Progesterone
Uterus
Pancreas
Insulin
Liver
Testes
Testosterone
Male reproductive organ

6. Pituitary Gland
Produces 2 hormones involved in fertility:
• FSH
• LH

7. Plant Hormones…

8. Plant
• Auxin – a plant hormone produced in the stem
tips and roots.
• A 'tropism' is a growth in response to a
stimulus. Plants grow towards sources of
water and light, which they need to survive
and grow.

9. Tropism
• Plants need light and water for
photosynthesis, to ensure they get both they
rely on tropisms.
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positive tropism – towards the stimulus
negative tropism – away from the stimulus
phototropism – growth in response to light
geotropism – growth in response to gravity

10. Homeostasis…

11. Human HOMEOSTASIS
• Homeostasis is the keeping under control of:
 Temperature (37 degrees)
 Glucose
 Water
 Ion content
• thermoregulatory centre is the part of the brain
that controls body temperature.
• The pancreas monitors and controls blood
glucose. The pancreas contains insulin that
lowers blood glucose levels.

12. Maintaining body temperature in
HOMEOSTASIS.
• Too hot: blood vessels dilate so blood vessels
are closer to the skin and more energy can
escape. VASODILATION
• Too cold: blood vessels constrict so blood
vessels are further away from the skin and
consequently less energy is lost.
VASOCONRTRICTION

13. Quiz …

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Quiz
Pituitary gland releases:
LH and FSH
Where is oestrogen found and what does it do?
Found in ovary, thickens ovary lining
Why does a period occur?
Egg is unfertilised
LH does…? FSH does…?
LH - Stimulates ovulation, FSH- matures egg
Correct term for releasing egg is:
Secretion
What is it to have the process stopped?
Inhibit

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What hormone do the following glands create? Ovary, ovary, pancreas, testes
oestrogen, progesterone, Insulin, testosterone
Plant hormone is:
Auxin
Explain TROPISM:
The control of growth in plants. Directing them to grow to sunlight and water.
positive tropism, negative tropism, phototropism, geotropism
Growth towards stimulus, growth away from stimulus, growth towards sunlight,
growth towards gravity
Homeostasis keeps under control:
Water, temperature, ion, glucose
Where does the brain control temperature?
Thermoregulatory
What does the pancreas contain?
Insulin
What does the pancreas control?
Glucose levels
Vasodilation
Blood vessels dilate (get wider) so that energy can escape through skin when hot
Vasoconstriction
Blood vessels constrict (get narrower) so less energy is lost when cold.