Absorption

The class came in and sat down quietly. Mr Smog gave them a moment to get their books and pens out the started his lesson. He did a quick register, Jodie had already been removed from the system. He stood in front of the class and addressed them. "Welcome back class." He made his belly transparent showing off his intestines and stomach. "As you can see, only the largest bones from my meal are still in my stomach. The rest of the meal has been broken down and is in some part of my intestines." He points to a section of his small intestine. "you might just be able to see the villi, little hair-like structures that line the small intestine. See how they help move the digested food along with the rhythmic squeezing of muscles." He explained.

Students watched as digested mush was squeezed along their teacher's small intestine. It was hard to believe that a few hours ago that was one of their class. Only small glimpses of undigested long blond hair; and the acid bathed, slowly digesting skeleton were there as a reminder. As they watched the muscles contract there was a crack. Above the intestines, the stomach had contracted and what looked like one of Jodie's femur's had been snapped in half, exposing marrow inside. This drew the student's attention briefly and they noticed the other femur was not in the stomach. However, no one was brave enough to mention it.

"Well as you can see," Mr Smog made some of his villi transparent exposing the network of blood vessels inside. "The villi are full of blood vessels and their large surface area helps the nutrients diffuse into the blood. The Villi also have microscopic protrusions from their outer cells called microvilli to greater increase absorption." He altered his transparent flesh to act as a lens to zoom into the microscopic level. He then had the students make notes and drawing of the villi and microvilli.

"Moving on to the large intestine." Mr Smog continued his lecture; changing his body to show the large intestine. "At this point, all digestion has finished and the only thing left is undigested waste and water. As you know our body needs water so this is where that is absorbed." The students made notes as Mr Smog moved on.