B11: Hormonal Coordination Flashcards
Main male hormone
Testosterone- Produced by testes which stimulates sperm production
FSH
Matures the egg in the ovary and starts oestrogen production
Oestrogen
Stops FSH and stimulates LH, maintain uterus lining
LH
Ovulation, stops Oestrogen and stimulates Progesterone
Progesterone
Increases lining of the womb, stops LH
IVF stands for……..
In Vitro Fertilisation Treatment
Examples of contraception
Oral contraceptives, Implants, Surgical Methods
Negative Feedback is
Systems that work to maintain a steady state
Adrenaline is produced by
The adrenal glands in times of fear or stress
Adrenaline increases……
The heart rate and boosts the delivery of oxygen and glucose to the brain and muscles.
Thyroxine comes from and stimulates
Thyroxine gland and stimulates the basal metabolic
Why is Thyroxine important and what are its levels controlled by
Important role in growth and development and controlled by negative feedback
Phototropism is
A hormone in plants, which responds to light
Gravitropism is
A plant hormone which responds to gravity
Gibberellins are important in……….
Initiating seed germination
Ethene controls…….
Cell division and ripening of fruits
Plant responses to light and gravity are brought about by the……
Auxin hormone
Auxin are used for
- Weed killers
- As rooting powders
- Promoting growth in tissue culture
Ethene is used for
- Control ripening of fruit during storage and transport
Gibberellins can be used to:
- End seed dormancy
- Promote flowering
- Increase fruit size
- Increase yield of sugar cane
Thyroid
Controls metabolic rate of the body
Pancreas
Controls the levels of glucose in the blood
Adrenal
Prepares the body for stressful situation
Ovaries
Controls the development of the female secondary sexual characteristics and is involved in the menstrual cycle
