The Anatomy of a Dogfish Shark
Dogfish Shark Dissection Lab
Dogfish Shark Dissection Lab
By: Vanessa Osorio Period 1
Objective: To study the anatomy of a dogfish shark
Materials:
* Preserved Shark * Surgical Scissors * Scalpel * Newspaper * Gloves * Goggles * Apron
Procedure:
1. Lay newspapers all over lab table to keep mess to a minimum.
2. Lay the preserved shark on the newspapers.
3. Identify external parts and features. Examples: lateral line, snout, dorsal fin, gills, etc.
4. When beginning internal dissection start by making a breach into the tough shark skin from the cloaca to just below the jaw. Make a cut on either side of the incision that extends far enough out so that it will facilitate pulling the skin back and leaving it open.
5. Locate and identify the shark’s liver and flap them out.
6. Identify internal organs. Examples: heart, stomach, intestine, ovaries (female), kidney, etc.
7. After complete and thorough dissection, clean up and dispose supplies properly.
Opinion: There were a lot of things that I found interesting in this lab dissection. The most interesting thing out of them, for me, was that the body was still fully intact. Even though I knew sharks have a closed circulatory system, I expected some type of blood and mushiness. All the organs were very visible. I was able to point out where the stomach, liver, and pancreas without any difficulty. I thought that I would not be able to make anything out, and it would end up as a huge mess, but it was quite the opposite. The area was very clean. My group and I were able to open up the shark and take out its babies without any complications from blood and other organs. It was a fun and learning experience I’ll never
Dogfish Shark Dissection Lab
By: Vanessa Osorio Period 1
Objective: To study the anatomy of a dogfish shark
Materials:
* Preserved Shark * Surgical Scissors * Scalpel * Newspaper * Gloves * Goggles * Apron
Procedure:
1. Lay newspapers all over lab table to keep mess to a minimum.
2. Lay the preserved shark on the newspapers.
3. Identify external parts and features. Examples: lateral line, snout, dorsal fin, gills, etc.
4. When beginning internal dissection start by making a breach into the tough shark skin from the cloaca to just below the jaw. Make a cut on either side of the incision that extends far enough out so that it will facilitate pulling the skin back and leaving it open.
5. Locate and identify the shark’s liver and flap them out.
6. Identify internal organs. Examples: heart, stomach, intestine, ovaries (female), kidney, etc.
7. After complete and thorough dissection, clean up and dispose supplies properly.
Opinion: There were a lot of things that I found interesting in this lab dissection. The most interesting thing out of them, for me, was that the body was still fully intact. Even though I knew sharks have a closed circulatory system, I expected some type of blood and mushiness. All the organs were very visible. I was able to point out where the stomach, liver, and pancreas without any difficulty. I thought that I would not be able to make anything out, and it would end up as a huge mess, but it was quite the opposite. The area was very clean. My group and I were able to open up the shark and take out its babies without any complications from blood and other organs. It was a fun and learning experience I’ll never