Sheep Eye Dissection

In class today we dissected a sheep's eye. We dissected a sheep's eye because their eyes are closely realated to human eyes. The Anatomy of the eye is like this... 

Basic terminology of the sheep eye

The bottom part of the eye hold the lens and retina and the upper part of the eye has the caliary body and optic nerve

Here in my hand is the sheep eye. The gray hazy object in the center is the cornea and is hazy because it is no longer alive. If this sheep's eye were part of a live sheep it would not be hazy.

In this lab we learned about how the eye also functions. Light rays enter the eye through the cornea. Then the cornea's bends the light rays in a way that they pass through the pupil the opening in the center of the iris through which light enters the eye. The iris then works like a shutter in a camera capturing everything witnessed by the eye itself. The muscle on the outside of the eye and the fat help protect it as well. 

Clay Brain

This project was making a diagram of the Brain out of clay. What my group and I did was draw a 2D image of the brain and then we put clay in spots of where actual pieces of the brain would be. For example on the left hemisphere of the brain we put hot pink clay in the spot of the spinal cord.

The Woman with the Hole in Her Brain

What this article is about is how a woman who is 24 years old finds out through a cat scan that she is missing her cerebellum. According to this article she has had a problem walking straight and steadily her whole life. What the cerebellum is, is it is basically the "little brain." The cerebellum’s main job is to control voluntary movements and balance, and it is also thought to be involved in our ability to learn specific motor actions and speak. Problems in the cerebellum can lead to severe mental impairment, movement disorders, epilepsy or a potentially fatal build-up of fluid in the brain. However, in this woman, the missing cerebellum resulted in only mild to moderate motor deficiency, and mild speech problems such as slightly slurred pronunciation.

For class we were assigned a different part of the brain and have to explain what would happen if that part would be missing. I got corpus collosum which is a board band of nerve fibers that joins together the right and left hemisphere of the brain. You can actually survive if the left and right sides of the brain are not connected, but you may have various problems over your lifetime.