Karteikarten: Homeostasis and Regulation Systems — 20 Karten

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