Homeostasis GCSE

What IMPULSES do neurones carry?
Electrical
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What are the two EFFECTORS?
Glands, Muscle
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List the FLOWCHART of NERVOUS system
Stimulus -> Receptor -> Sensory Neurone -> Relay Neurone -> Motor Neurone -> Effector -> Response
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What body TEMPERATURE do human regulate?
37ºC
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Two responses of the body at HIGH temperatures?
Sweat Glands release Sweat (Evaporation) / Blood vessels leading to the skin capillaries become wider - they dilate - allowing more blood to flow through the skin, and more heat to be lost.
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Two responses of the body at LOW temperatures?
Shivering, Muscle Contractions (Respiration) / Blood vessels leading to the skin capillaries become narrower - they constrict - letting less blood flow through the skin and conserving heat in the body.
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Define GLUCOSE
Sugar in the blood, required for aerobic respiration
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Define GLUCAGON
a hormone formed in the pancreas which promotes the breakdown of GLYCOGEN to GLUCOSE in the liver.
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Define GLYCOGEN
A stored form of glucose.
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Define INSULIN
Insulin is a hormone produced by the pancreas that regulates glucose levels in the blood.
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Name three ways WATER LEAVES the body.
Breathing, Sweating + Urine
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What ORGAN regulates WATER and IONS?
The Kidney
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WASTE product of the LIVER?
Urea
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What HORMONE controls WATER levels?
ADH
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3 PROS and CONS of DIALYSIS
PROS: Can start straight away, Filters blood, No operation CONS: Strict diet, Expensive, Bad quality of life
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3 PROS and CONS of KIDNEY TRANSPLANT
PROS: Better quality of life, Cheaper, Permanent CONS: Operation, Immune Suppressants, Hard to find donors
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Name 3 forms of CONTRACEPTION
The Pill, The Male Condom, The Female Condom, The Contraceptive Implant, Spermicide, The Vaginal Ring
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Explain OESTROGEN
The hormone oestrogen is secreted by the ovaries. Oestrogen makes two things happen: it stops FSH being produced - so that only one egg matures in a cycle it stimulates the pituitary gland to release the hormone LH
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Explain FSH
The hormone FSH is secreted by the pituitary gland. FSH makes two things happen: it causes an egg to mature in an ovary it stimulates the ovaries to release the hormone oestrogen
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Explain LH
The hormone LH causes the mature egg to be released from the ovary. This image shows how the level of oestrogen changes during the menstrual cycle. Progesterone is another hormone secreted by ovaries: it maintains the lining of the uterus and stays h
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Other cards in this set

Card 2

Front

What are the two EFFECTORS?

Back

Glands, Muscle

Card 3

Front

List the FLOWCHART of NERVOUS system

Back

Preview of the front of card 3

Card 4

Front

What body TEMPERATURE do human regulate?

Back

Preview of the front of card 4

Card 5

Front

Two responses of the body at HIGH temperatures?

Back

Preview of the front of card 5
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Zimran Malik

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Great Resource!

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