The Perch

Perch dissection Pre-Ap Biology Vu Period 4

What is a perch?

The perch (Perca) is a fish that is commonly found in freshwater areas. These wonderful creatures eat smaller fish, shellfish and insect larvae. They are hunted by even larger fish, fishing birds, large turtles and humans. They have adapted to life in the water by adding gills, fins, scales and lots of mucous.

Objectives

In this lab, each student will work with a lav group in order to learn frome the dissection of a perch. Dissection gives the student the opportunity to ovserve the placement of organs and their relationships to one another. Before beginning the lab, each student must perform pre-lab research in order to familiarize themselves with the perch. Pictures and diagrams will aid in the completion of this lav dissection. Be thorough and do not rush through this lab. Read all directions carefully and make all drawings as accurate and neat as possible.

The circulatory system

The circulatory system allows the cells of the body to be reoxinanated. It consists of the heart and blood vessels. The heart consists of two major parts: the atrium where blood enters to get oxygen and the ventricle which pumps oxiginated blood back through the body. The blood vessels are composed of 3 different types of veins: arteries which carry oxigenated blood throughout the body, veins which carry blood back to the heart to get reoxigenated, and capilaries which have semi-permeable walls which allow the oxygen to go to the cells and for waste to go back to the heart. The circulitory system is made up of epithelial (blood vessels and outer surface of the heart), muscle (the heart), nervous (tells the blood where to go), and connective tissue.
The Circulatory Song!

Interesting Facts

There are over 6000 species of perch

The spines over their gill and front dorsal fin act as defensive mechanisms

They grow up to 10-20 inches long

They are classified as semi-anadromous

Credits go to...

Wikipedia (what a suprise!)

visual.merrium-webster.com

buzzle.com

diannes-circulatory-system.weebly.com