Category Archives: Hormones
I came across this through Ed Yong’s weekly linklist, but @SciCurious often writes really interesting posts (Neurotic Physiology) on neurobiology. This one is particularly relevant to #IBBio students for a few reasons. First, you guys are up way too late, way too often. Second, it connects directly to our course – read this blog post (based on this paper), especially students working on option A: Nutrition, or anyone reviewing hormonal control.
Finally it is ripe for data-based question practice.
These graphs click-through to the originals posted at SciCurious’s blog. Here are some DBQ-style questions you might ask:
- Calculate the difference in post-dinner snack energy intake between having a ‘normal’ 9h sleep and the sleep-deprived 5h condition.
- Compare the trend in energy expenditure throughout the day between 9h sleep and 5h sleep.
- Describe the difference between 9h sleep and 5h in terms of eating patterns.
- Evaluate the hypothesis that “when we sleep less, we eat more” based on the data provided and information in the article.
- Explain the role of the appetite control centre of the brain on appetite, and suggest how it is affected by the conditions of the experiment.
Appetite Control: from the Wellcome Trust (‘The Anatomy of Appetite’ explainer page here).
So there you go – you learned something.
Get to bed. And leave the snacks in the fridge.
Download it here: digestionfhp.ppt
Let’s start with the basics:
Simple Digestion animation by kitses.com
And don’t forget the excellent review materials at Click4Biology.
Fetal pig digestive system virtual dissection from Whitman College
Control of digestive juice secretion:
Gastric acid production by parietal cells (advanced – look at ‘normal’ only) – John Hopkins
Another Gastric acid animation (over-detailed) PPIKnow Pharmacology website
Digestion of lipids:
Good animation from Wiley.com
Control of bile secretion (advanced) from ZeroBio.com
I’m still looking for animations for the other subtopics. If you find any, let me know!
Donwload the powerpoint here: hormonal_control.ppt
Here’s a good simple overview of steroids and peptides – Wisconsin Online
Old school overview of the endocrine system:
Mode of action of steroid hormones:
Clear explanation from McGraw Hill
Mode of action of peptide steroids:
Short video, but clear – UC Davis
Mode of action of thyroxine:
Negative feedback and thyroxin secretion:
Control of the pituitary – Leif Saul (Biology in Motion – very good)
Control of ADH Secretion:
Too simple, but good overview – BBC GSCE Bitesize
Focus on the kidney (reviewing the effect of ADH) – BiologyMad
Other useful links: