This Week in Science #9

  
         This week in science I have dissected a specific fish named a perch. I was a life changing experience for how I would act towards Science. In science class the task of the week was dissection and identifying  parts such as the dorsal,the ventral the side vie and the mouth parts. They had 4 selections of animals that e could have picked. In this dissection me and my partner had picked a perch and we had to find out the sex of it. Turns out it was a male because it only have one fin on the ventral( the bottom). Also we had ti draw a illustration of the dorsal of the ventral view and label.
        This week in scince we leard alot of sceintific details about dissection. This week in scince was a very fun and excited week for me because I had to dissect a organism and lable the parts. It was very weird because we had to use scientific language because our teacher didn't want us to be calling parts of animals  he butt or underneath it the bottom part; But the proper wrod for that  would be the ventral view where the anus is located. This weekin science I have learned alot and I would wanna keep learning more about it because it gets weird and I like weird. 
         We had a task to compare and contrast the forms and functions of our and our table mates' organisms. The organism that my pair and I had was a Perch which is  a type of fish that lives in fresh water. Their skin tend to be rough to cut through cut through and at the skate was really heard to cut through as well.  Both animals were marine animals meaning that they liverd in water. Therfore they had tails and fins that helps them breath underwater. The differences was that the skate body was much bigger than the perch's body and the skate eyes were internal with the ventral view and the perch eye was out side  nearthe dorsal view. 
 

This Week In Science #8

        

             A couple of  days ago I had to dissect  a crayfish.It was a mouth watering experience however during this procedure we has to find different part of the cray fish (which is a arthropod) such as the dorsal view which is is the back of the crayfish, the ventral view which is the front of the crayfish, the mouth parts and the side view. In this dissection we had to find the posterior or anterior  for our arthropod. We had to label and proximal (which is to describe the location of a part.) During this project we had to cut open the crayfish on the ventral view. Inside of the cray fish I spotted many features such as the heart and all of it's organs. But in order for a cray fish adaptation it had to have different features of its body. In these pictures above you see the side view and the mouth parts. As can you see in the pictures I labeled the antenna because that is a big feature of a crayfish because with out they antenna's they love the sense which is also one of their organs  to locate. The following picture above shows the crayfish on the side view  it shows the cheliped and the cheliped is important as well because with out a cheliped how would the crayfish ever eat and catch its prey.

            During this project I have learned how to use a scalpel which is a special dissecting knife to cut through flesh.(Yes!It does work.) I learned that when you use a scalpel you have to be care full before you cut through the organs of and animal. In the beginning of this project I was very disgusted  with the smell and the way the arthropod looks but I have learned to go in to depths with this animal and just look at all the interesting parts and different locations of this arthropod. I was always puzzled with questions such as; Do arthropod have white blood cells that fight bacteria just like we do? Do all arthropods have four legs and is an ex-so skeleton? All these amazing questions cant wait to see what what is the answer to my question.