Homeostasis — definition?
Maintenance of a stable internal environment
Control systems — role?
Regulate internal conditions via detection and response
Receptors — function?
Detect stimuli and send signals to control centres
Coordination centres — example?
Brain, spinal cord, pancreas
Effectors — role?
Muscles or glands that produce responses
Negative feedback — mechanism?
Response reduces original stimulus change
Nervous system — speed?
Fast, electrical impulses
Hormonal system — speed?
Slower, chemical signals in blood
Reflex arc — pathway?
Sensory, relay, and motor neurones
Stimulus — example?
Light, temperature, pressure
Blood glucose — regulation organ?
Pancreas
Insulin — effect?
Lowers blood glucose by promoting uptake
Glucagon — effect?
Raises blood glucose by breaking down glycogen
Type 1 diabetes — cause?
Insufficient insulin production
Type 2 diabetes — cause?
Cells less responsive to insulin
Reproductive hormones — example?
Testosterone, oestrogen, progesterone
Oestrogen — role?
Thickens uterus lining, inhibits FSH
Contraception — purpose?
Prevent pregnancy
Barrier methods — example?
Condoms, diaphragms
Fertility drugs — use?
Stimulate egg production in women
Testez vos connaissances avec un QCM de 10 questions sur Homeostasis and Regulation Systems.
1. In response to a significant decrease in body temperature, which sequence correctly illustrates the homeostasis mechanism involved?
2. What is the hormonal system in the body primarily responsible for?
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