Year 9 SE Flashcards
How many days does a menstrual cycle last for ?
28 days
What happens on Day 0 of menstruation?
Menstruation
What happens on Day 0-14 of menstruation?
Builds up uterus lining
What happens on Day 14 of menstruation?
Ovulation
What happens on Day 28 of menstruation?
Maintain uterus lining
What does FSH do ?
Stimulates egg maturation
What does LH do ?
Stimulates ovulation
What does oestrogen do ?
Causes uterus lining to build up
What does progesterone do ?
Maintains uterus lining
What do glands produce ?
Hormones
What are hormones ?
Chemical messengers
What are hormones transported through ?
Bloodstream
What does the ovaries produce ?
Oestrogen
What and where does the thyroid gland produce ?
Thyroxine in the neck
What does the testes produce ?
Testosterone
What and where does the pituitary gland produce ?
FSH, LH in the brain
What does the pancreas produce ?
Insulin
What and where does the adrenal gland produce ?
Adrenaline in the kidneys
What and where does the salivary gland produce ?
Saliva in the mouth
What happens when there’s too much glucose in blood sugar ?
- Too much glucose
- Pancreas produces insulin
- Insulin changes glucose to glycogen into liver
- Blood glucose decreases back to normal
What happens when there’s too little glucose in blood sugar ?
- Too little glucose
- Pancreas produces glucagon
3.Glucagon changes glycogen to glucose - Blood glucose increases back to normal
List the 3 neurones
Sensory, relay, motor
Where’s the sensory neurone ?
Receptor to coordinator
Where’s the relay neurone ?
Coordinator
Where’s the motor neurone ?
Coordinator to effector
What is homeostasis?
Regulation of internal environment
Give some examples of homeostasis
Temperature, blood sugar, water levels
What’s negative feedback ?
Counteracting response
What’s positive feedback
Amplifying response
What’s the required practical ?
The test for reflex actions with a ruler
What’s the independent variable for the required practical ?
With/ without music (the thing you change)
What’s the dependent variable for the required practical ?
Ruler measurement (the thing you measure)
What’s the control variable for the required practical ?
Same ruler, same person (the thing you keep the same)
What’s the purpose of a reflex action?
Protect from danger
Give some examples of reflex action
Blinking, breathing
What is a reflex action ?
A quick automatic response
What are the 2 differences between nervous system and endocrine system ?
N- faster effect, act for shorter
E- slower effect, act for longer
Name the 4 contraception techniques
Natural, chemical, barrier, surgical
Give some examples of natural contraception
Abstaining from sex, monitor body temp
Give some examples of chemical contraception
Pill, transplant, iud
Give some examples of surgical contraception
Vasectomy (male), sterilisation (female)
Give some examples of barrier contraception
Condom, diaghram
How does barrier method work ?
Prevent sperm from reaching the egg
How does surgical method work ?
Sperm duct/oviduct is tied
How does chemical method work ?
Have hormones to stop FSH and LH production so no egg matures and no ovulation.
