Human Physiology

We are now about to start quite a chunk of work where we look at human health and Physiology. In this section we will combine Topic 6 (SL) Human Health and Physiology together with Topic 11 (HL)  Human Health and Physiology. For most people this is the reason that they undertake study in Biology, to understand how their own bodies work, what can go wrong, and how. The curriculum statements for Topic 6 can be found Here.

We start this section with a look at Digestion, where we look at why we need a digestive system, and how our digestive system works.

When it comes to the food that we eat, this can be a really emotive subject – check out the short TED talk below by Dean Ornish about the number of people who are getting it very wrong when it comes to diet

This Power Point on Digestion has a good overview of the work we will be covering. Mr Stephen Taylor has once again come up with the goods with a comprehensive slideshare on Digestion (SL) and a slideshare that covers the Option H section on digestion which we will cover at the same time.

To start off with though, can you identify and name the main parts of the human digestive system?

In the lesson today I mentioned the importance of Enzymes in digestion. It is really important that you understand what enzymes are, how they work, factors which affect the rate of reaction etc. Here is the PowerPoint on Enzymes  that I mentioned in class today, look at it if you feel that you have gaps in your knowledge in this area.


In class we will use this animation



Reproduction in flowering plants.

Well it might be seen to be good form to present your mother with a bunch of plant reproductive organs on Mother’s Day, but what exactly are flowers, how does sexual reproduction occur, how do seeds germinate, and how do flowers control their opening? These are all things which we will look at in this section of the Topic.

Here is an excellent slideshare on reproduction in flowering plants produced by Stephen Taylor, and Here is a link to a Wikipedia article all about Photoperiodism – the control of flowering in long and short day plants.