Tag Archives: homeostasis

11.3 The Kidney & Osmoregulation

A powerpoint of the OLD syllabus – much is still relevant though.

A nice introduction to how the kidneys work (from TED-Ed):

Mr Paul Andersen (from Bozeman High) describes Osmoregulation (including in fish which you don’t need to know) in a 8m 57s lesson.

An animated tutorial from McGraw Hill Education on basic Renal processes and here’s an animated, narrated tutorial on the mammalian kidney which also includes a quiz (from Sinauer Associates).

In Crash Course Biology #29 – The Excretory System: From Your Heart to the Toilet, Hank takes us on the fascinating journey through our excretory system to learn how our kidneys make pee.

6.5 Neurons & Synapses

Thanks again Mr Taylor (of iBiology) for this powerpoint from the OLD syllabus. 

From Sinauer Associates we have an animated, narrated tutorial on Reflex Arcs which also includes a quiz and here are animated, narrated tutorials on the synapse and action potentials.

Click on ‘Signal Transduction’ to see an Interactive Animation from Wiley on how hormones work & Cholera (& lots more that you don’t need to know).

An animated tutorial from McGraw Hill Education on blood sugar regulation in diabetics. and here is ‘What does the Pancreas do?’ (from Emma Bryce & TED-Ed):

In Crash Course Biology #26 – The Nervous System, Hank begins a series of videos on organ systems with a look at the nervous system and all of the things that it is responsible for in the body. In #33 – Great Glands: Your Endocrine System, Hank fills us in on the endocrine system.




Lovely infographic – just click on it to enlarge.

B7 Syllabus Statements

All of the B7 Revision notes in downloadable word format and here are key terms and some definitions: Key Terms B7

For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. The s-cool revision site lets you revise the topic, summarizes the topic & tests you on it. Skoool gives you a lesson, including progress questions, for each Biology topic but you’ll need sound on for it. GCSE Bitesize has revision pages (that take you through the topic), a test and an activity.

An excellent powerpoint that covers it all:

B7.4 Homeostasis

A good powerpoint (although we don’t need the last few slides about controlling water levels):

Homeostasis of the body from Claire Gaukrodger

Science Bank 16 (Homeostasis): You only need Part 1 – Controlling Temperature (to 5m 10s) & Part 3- Controlling Blood Sugar Level (from 9m to 14m 10s):

B7.4 Revision notes

A powerpoint can be downloaded from here, a 5m 33s animation on Homeostasis is here & this link to GCSE Bitesize will help you revise the topic.

Videos include The Virtual Body – Homeostasis (19m), Homeostasis – The New Living Body (19m) & BBC Short Circuit Homeostasis (19m).


IGCSE Biology: Coursebook, chapter 11, pp. 145 – 151

This powerpoint covers Homeostasis & Negative Feedback to slide 27; that’s all we need: