- A congenital abnormality, whereby there is improper innervation of the large intestine, extending from the rectum, sometimes proximally into the colon. Epidemiology Male predominance   Aetiology 30...

- The skull has numerous holes (foramina) through which various cranial nerves, arteries, veins and other structures pass. To aid learning of these important foramina, I have created this visual mnem...

- What are the different types of teeth? How do they help us break down food? By Raja Narayan. More free lessons at: http://www.khanacademy.org/video?v=9wYbsSr...

- How much can we really store in our stomachs until we're scientifically stuffed? How does the stomach help us process the food we eat? By Raja Narayan. More ...

- How does our mouth help us break down food? To what extend is food digested there before it is swallowed? By Raja Narayan. More free lessons at: http://www.k...

- Who are we, really, at our deepest, most inner core? What are the different structures of the GI tract? What are their functions? By Raja Narayan. More free ...

- Understand how the digestive tract has a mind of its own and uses neuronal as well as hormonal signals to breakdown food. By Raja Narayan. More free lessons ...