B1 1.2
- Created by: alice humphrys
- Created on: 10-10-16 20:45
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- Coordination and control
- Relex actions
- Happen quickly
- electrical impluse
- called arc reflex
- synapses eletrical impulses diffuse across the gap
- responding to change
- stimulus are picked up by receptors
- found in special organs
- travels up sensory neurone
- jump along synapses to CNS
- back along motor nerone
- then to effector organs for response
- back along motor nerone
- jump along synapses to CNS
- stimulus are picked up by receptors
- Hormones and menstrual cycle 28 days long
- FSHThe hormone FSH is secreted by the pituitary gland.
- it causes an egg to mature in an ovaryit stimulates
- the ovaries to release the hormone oestrogen
- OestrogenThe hormone oestrogen is secreted by the ovaries.
- it stops FSH being produced - so that only one egg matures in a cycle
- stimulates the pituitary gland to release the hormone LH
- hormone LH causes the mature egg to be released from the ovary
- FSHThe hormone FSH is secreted by the pituitary gland.
- hormones and plants growth
- auxin
- gravitropism
- grow towards earth core
- negatively shoots
- positivelyroots
- grow towards earth core
- phototropism
- grow towards sun
- positively shoots
- negatively roots
- grow towards sun
- Artificial control of fertility
- FSH stimulate maturing of egg
- controlling conditions
- homeostatic
- Controlling things like body temperature and water level
- hormones made in pancreas
- body tem 37
- homeostatic
- using hormones
- plants hormones- weed killer
- Relex actions
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