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B5 science - Coggle Diagram
B5 science
Menstrual cycle :check:
Ovulation
The release of an egg cell , occurs every 28 days
FSH
Causes the egg to mature in the ovary
Oestrogen
Causes the blood lining of the uterus to develop
LH
The hormone that causes ovulation
Progesterone
it maintains the blood lining of the uterus
changes in the menstrual cycle
Homeostasis and response
section 1 key terms :check:
Homeostasis
regulation of internal conditions to keep them at the optimum
Negative feedback
Ensuring that changes are reversed and returned back to the optimum level
section 2a nerve reflexes key terms :check:
Central nervous system (CNS)
The brain and spinal cord working together to coordinate the response of effectors
Reflex action
A fast, automatic response/reaction done without thinking
Coordination centre
Receives and processes the information from receptor
Synapese
The gap between two neurons
Myelin Sheath
insulates some neurons
section 2b the reflex arc :check:
stimulus
receptor
Sensory Nueron
Relay Neuron
CNS
motor neuron
Effector
response
section 2c the synapse
an electrical impulse arrives at the synapse
Neurotransmitter molecules are released and diffused across the synapse
Neurotransmitter molecules fill the receptors and cause an electrical impulse into the next neuron
Hormonal Control
section 3 key terms :check:
endocrine system
a system of glands the release hormones
hormone
A chemical the is released by a gland and travels in the blood , has an effect on a target organ . the effects are slower and longer lasting
Pituitary Gland
A gland that secretes several hormones that stimulate other hormones to be released
Testosterone
Male hormone produced by the testes and performs sperm production
adrenaline
hormone produced by the adrenal gland to stimulate heart rate and O2 delivery
Thyroxin
stimulates the metabolic rate
Location of glands :check:
Thyroid
neck
Pituitary
brain
Adrenal
on the kidneys
testies
below the penis
ovaries
uterus
pancreas
upper abdomen
Blood glucose control :check:
pancreas
Monitors and controls blood glucose levels
Insulin
It causes the glucose in the blood to love into the cells
Glucagon
causes glycogen to be converted into glucose
Glycogen
a storage molecule made from bonded glucose
Type 1 diabetes
disorder when the pancreas fails to produce enough insulin
Type 2 diabetes
body cells no longer react with insulin produced by the pancreas
Methods of contraception :check:
