Hormonal Control Flashcards
What is the function of adrenaline and where is it produced?
Increases breathing/heart rate, conversion of glycogen to glucose.
Produced in Adrenal glands
What is the function of thyroxine and where is it produced?
Controls metabolic rate
Produced in Thyroid gland
What is the function of the pituitary gland?
Stimulate other glands to produce hormones to bring about effects
What happens when body temperature is too high?
Blood vessels dilate, sweat produced from sweat glands
What happens when body temperature is too low?
Blood vessels constrict, muscles contract (shivering)
What happens when Blood glucose concentration is too high?
- Pancreas produce insulin
- Glucose moves from blood to liver and muscle cells
- liver and muscle cells convert glucose to glycogen for storage
What happens when Blood glucose concentration is too low?
- Pancreas produce glucagon
- Glucagon causes glycogen to be converted into glucose
- Glucose is released into blood
What is the function of the plant hormone Auxin?
Stimulates growth in plant
- Used as a weed killer
What is the function of the plant hormone Ethene?
Controls ripening of fruit during storage and transport
What is the function of the plant hormone Gibberellins?
- End seed dormancy (the state in which seed is unable to germinate)
- Promote flowering
- Increases fruit size
What is the function of Follicle stimulating hormone (FSH)?
- Stimulates ovaries to produce oestrogen
- Causes maturation of egg in the ovary
What is the function of Luteinising hormone (LH)?
Stimulates release of an egg
What is the function of testosterone and where is it produced?
- Stimulate sperm production
- Produced in the testes
What is the function of oestrogen and where is it produced?
- Stimulate development of female secondary sexual characteristics
- Regulate menstrual cycle
- Produced in the ovaries
What is ‘In Vitro Fertilistation’ (IVF)?
Fertilization in which an egg is combined with sperm outside the body.
Give three possible disadvantages of IVF:
- Emotional and Physical stress
- Success rates are not high
- Multiple birth risks to mother and babies
