Trachea Research Paper

The trachea is commonly called the wind pipe. This pipe provides a tube that carries air to the bronchi and lungs. The trachea stays open with a number of cartilage rings that are intermittent segments down the entire length of the pipe. These rings give support and shape to the trachea which always stays open. The esophagus sits behind the trachea, is smaller and more flexible. The esophagus is a muscular tube that is covered by skeletal muscle on the upper third of the esophagus and smooth muscle around the lower two thirds. The esophagus is the food pipe. This pipe connects the mouth to the stomach. Movement of food from through the esophagus happens in peristaltic waves.
As the esophagus and the trachea are located in roughly the same place they are separated by the epiglottis. The epiglottis is a tiny cone shape that sits on top of the larynx providing protection to the glottis, or small slit like opening of the trachea. The epiglottis stops food and water from entering the trachea during eating.
The trachea is approximately 9 to15 cm in
A cut is completed to separate the kidney in half. There is a thin membrane that covers the kidney. This being the renal capsule. The outer ring, the inner section as well as chambers are visible. Both the sheep and the pig kidney have the distinctive kidney bean shape. The cortex of the kidney is striated. The next layer is the the medulla. This area appears quite fatty. The area where the nephron and and renal arteries are located. The white section, in the center of the kidney is the renal pelvis. There is a hole identified as the opening to the ureter which is where the urine would drain from the kidney. At the edge of the renal pelvis are major calyces or tube like extensions from the renal pelvis. The openings at the end of the calyces are the papillae. They split into smaller segments. The shapes within the medulla are renal pyramids. They appear very