Dog Fish Shark Research Paper

Anatomy of a Spiny Dogfish Shark
The dogfish shark has a very complex, unique exterior and interior structure. The body shape benefits the shark for its swimming ability and survival necessities, while the interior structure ensures correct digestion and proper health. Every specific part plays a key role in the anatomy of the shark. There are three main sections categorized as the head, trunk, and tail. Located in the head section is the eye, spiracle, gill slits, mouth, and nostril. The rostrum is the snout at the anterior end of the head section that comes to a rounded off point. The structure of the eye includes a transparent cornea, iris, eyelids, and a membrane. The gill slits mainly filter the penetration of water coming out that began
You should always cover up any open wounds that could possibly get infected. The first step is to put on gloves before touching anything. The tools needed are gloves, scalpel, tweezers, probe, and proper instructions. Be sure to know the anatomy of the shark and what to expect. The shark smells like formaldehyde, so if you have a weak stomach, this may not be fun for you. Before making an incision, you need to observe the outside of the shark. Measure the length, height, and width and record the data. The skin should feel tough, smooth, and thick. Every shark has different features that make it unique. The color of the exterior should be a deep gray on the upper side, and a dirty white on the underneath. Next, find a very thick part of skin and use the proper tools to peel of a piece of skin only. You can examine this closely under a magnifying glass or a microscope. You should use a tub when going through the next steps to avoid making a huge mess. The first incision should be a mid-ventral incision from the cloaca cranially to below the jaw. Always remember to make the cuts as shallow as possible to avoid damaging internal organs. Peel back the skin and observe the internal systems. You will be able to see the two dark colored kidneys on both sides of the midline. This extracts urea from the urine and returns the urea to the blood. Also you will see the stomach, a J-shaped organ composed of a cardiac portion which is after the bend of the stomach. The color of the stomach is a pinkish- brown color. Located on the inside of the wall is a membrane called the peritoneum. This may appear as smooth and shiny. The liver is the largest organ lying within the body and it has two main lobes. The lobes are labeled left and right. They are a very dark brown color and are almost the length of the whole inside. Also, there is a third, much smaller lobe that contains the gall bladder. In the males,