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GCSE level School Biology: Homeostasis: Endocrine system, adrenaline & thyroxine hormones

SITEMAP   Use page sub-index, take time to study the content on the endocrine system

HORMONES & ENDOCRINE SYSTEM

Introduction to the endocrine system of hormones including homeostasis and the function of the hormones adrenaline and thyroxine including explaining negative feedback systems (other hormones are dealt with on other pages - see below the sub-index)

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Doc Brown's GCSE level biology exam revision study notes

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Sub-index for this section on hormones and the endocrine system

(1) What are hormones? What do they do?

(2) Endocrine system: Examples of hormones and which gland or organ produces them

(3) A comparison of the nervous system and the endocrine hormone system

(4) The function of the hormone adrenaline

(5) The function of the hormone thyroxine

See also (6) to (10) in other sections of the website involving homeostasis and hormones

Reminder: Homeostasis the function of self-regulating processes by which biological systems (organisms) tend to maintain physical and chemical stability while adjusting to conditions that are optimal for survival i.e. counteracting unfavourable conditions. These process can involve hormones secreted from the glands of the endocrine system. Below are links to the specific sections on homeostasis.

(6) Homeostasis: introduction to how it functions (negative feedback systems explained) 

(7) Homeostasis: control of blood sugar level - insulin and diabetes

(8) Homeostasis: osmoregulation, ADH, water/urea/ion control, kidney function, dialysis

(9) Hormone systems: menstrual cycle including contraception and fertility treatments

(10) Hormone control of plant growth and uses of plant hormones


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General HUMAN BIOLOGY revision notes

Introduction to the organisation of cells => tissues => organs => organ systems (e.g. in humans)

Examples of surfaces for the exchange of substances in animal organisms 

See also Enzymes - section on digestion and synthesis

The human circulatory system - heart, lungs, blood, blood vessels, causes/treatment of cardiovascular disease

Homeostasis - introduction to how it functions (negative feedback systems explained)

Homeostasis - control of blood sugar level - insulin and diabetes 

Homeostasis - osmoregulation, ADH, water control, urea and ion concentrations and kidney function, dialysis

Homeostasis - thermoregulation, control of temperature

The brain - what the different parts do and the dangers if damaged

An introduction to the nervous system including the reflex arc

Hormone systems - Introduction to the endocrine system - adrenaline & thyroxine hormones

Hormone systems - menstrual cycle, contraception, fertility treatments

Respiration - aerobic and anaerobic in plants and animals

Keeping healthy - communicable diseases - pathogen infections

Keeping healthy - non-communicable diseases - risk factors for e.g. cancers

Keeping healthy - diet and exercise

Keeping healthy - defence against pathogens, infectious diseases, vaccination, drugs, monoclonal antibodies

See also Culturing microorganisms like bacteria - testing antibiotics/antiseptics

Food tests for reducing sugars, starch, proteins and lipids 

The eye - structure and function - correction of vision defects 

Optics - lens types (convex, concave, uses), experiments, ray diagrams, correction of eye defects (gcse physics)


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