SirSmattering

http://www.bmj.com/content/348/bmj.g366 What are peoples thoughts? Looks like a pretty solid paper, and a fairly damming conclusion to me. The quote in the title came from the New York Times by the way, if you don't feel like ploughing through the paper the article is here: http://www.nytimes.com/2014/02/12/health/study-adds-new-doubts-about-value-of-mammograms.html?hp&_r=1

There's also a reflex known as the Vocalisation Induced Stapedius Reflex which lowers the sound of your voice by around 20 dB. Your stapedius is tiny muscle in your ear that can reduce the perceived loudness of a sound, and as you speak your brain uses this muscle to lower the sound of your own voice via a reflex ark. Not sure how relevant that is to being unable to recognise your own voice - but it's interesting to note that we always perceive ourselves quieter than we're actually being!

You're right - if you look at any diagram of the liver, you'll see that it crosses the midline and lies under the left hemidiaphragm. Where the confusion might be arising is that the liver doesn't actually make contact with the left hemidiaphragm. The liver is covered by a thin layer of peritoneum, the structure of which is complicated and I'm sure you'll be bombarded with teaching on it. There is a 'bare' area of the liver which isn't covered by peritoneum which lies underneath the right hemidiaphragm where the surface of the liver makes actual contact. This isn't present on the other side. Hope that helps!