They have a worldwide distribution and are commonly found living in soil, feeding on live and dead organic matter. Using pages 7982 in your inb, write a lab report with the following sections. Understand all major earthworm systems for maintaining homeostasis. Before we proceed while dissecting, be respectful of your lab partners and of the specimen you are about to explore, observe and learn from. Click on the external anatomy button to view a diagram of the external features of an earthworm. Locate the dark line that runs down the dorsal side of the worm, this is the. Lab demonstration of the dissection of the common earthworm. My boys are 11 and 12, and neither wanted to dissect anything, but both found the dissection very interesting once they got started. When we were finished we gathered up the plastic with the worm wrapped inside and threw it away. This worm dissection lab has everything youll need. An earthworm is a tubular, segmented worm of the phylum annelida. Earthworm dissection guide anatomy hst learning center. An earthworms digestive system runs through the length of its body.
Your kids will really dig this worm model that gives them all the exploration without all the mess. You will be spending much of the rest of the year in selfdirected, inquiry based dissection before beginning, you must complete all of the following. What one customer said about the earthworm dissection guide. Your scissors are your most important tool, but be sure to handle them carefully and always double check instructions before cutting. After a few minutes, remove the worm and lightly pat it dry with a paper towel. However, the recorder should complete these checklists during the activity to make sure the information is correct. To understand the structure and function of external and internal organs. Tell students they will complete the earthworm dissection procedural checklist, cooperative learning checklist and lab safety checklist during and at the end of the lab activity in attached file.
In this lab, you will dissect an earthworm in order to observe the external and internal structures of earthworm anatomy. Earthworm anatomy is a great introduction for your life science or biology students. Pdf earthworms are essential soil organisms in maintaining soil fertility and thus are. These include models, filmstrips, videotapes, and computer simulations. To learn about the external and internal anatomy of the earthworm.
The hyperlink to the files is at the bottom of the page in alphabetical order by the first word. I replaced the plastic with plastic wrap before putting the tray away. If you do not wish to have your students perform this dissection, or if some students object to dissection, alternative methods of studying these structures are available. Tubelike structure found on ventral surface, usually. Cat dissections online virtual frog dissection kit clam dissection virtual mouse necropsy cockroach dissection the virtual pig dissection cows eye dissection rat dissection guide i and ii. The earthworms were in good condition, not smelly at all, and large enough to see the anatomy pretty well. Learn about the human body from the inside out some people think that knowing about what goes on inside the human body can sap life of its mysterywhich is too bad for them. To know the digestive, circulatory, reproductive and nervous system.
For this reason, you should have a container of rubbing alcohol with you when you search for the worm. The body of pheretima is nearly circular in crosssection and varies from 7 to 8 inches 1819 cms in length. What is the purpose of studying and dissecting an earthworm. Hsts earthworm dissection guide for middle schoolers describes their external and internal anatomy, along with full size pdfs. Segments of body rings around body, body is segmented. Start your dissection about an inch posterior to the clitellum. Earthworm dissection viewing the external and internal anatomy of an invertebrate 1. Frog dissection frog dissection part 1 frog dissection part 2 frog life. Here is the access download page of earthworm anatomy and dissection answers pdf. This will also help you to draw the structure and diagram of earthworm. Correctly dissect an earthworm and accurately identify various earthworm organs and systems. Learn vocabulary, terms, and more with flashcards, games, and other study tools. A dark line extends from end to end in the middorsal line. To understand the structure and function of the external and internal organs.
Earthworm paper dissection scienstructable 3d dissection. External anatomy what you need per group dissecting tray 1 per station probe 1 per station earthworm 1 per station. See below for specific dissection specimen options. Dissection of earthworm zoology biology discussion.
The ventral blood vessel can be seen on the underside of the worm, though it is usually not as dark. Scott department of biological sciences university of alberta supported in part by academic technologies for learning and faculty of science, university of alberta these modules are designed primarily for use in introductory entomology courses at the university of alberta. An earthworm is a tubeshaped, segmented worm found in the phylum annelida. The earthworm is an excellent model for studying the basic pattern of organization of many evolutionarily advanced animals. If you have decided to do an earthworm dissection, i want it to be a great experience for you and your student. This mucus helps the earthworm breathe because it keeps the body moist. Dissection introduction powerpoint and discussion will be presented in class, if you miss it, you are responsible for reading and understanding the powerpoint and getting supplemental discussion. Dissections allow us to examine the internal structures of organisms that we normally see only in textbook diagrams. Click on the check button to receive feedback on whether the labels are matched with the correct structure. Often referred to as the heart, pressure regulation seminal vesicles. The earthworm hunts food at night and thus has been called a night crawler. Pdf pheretima darnleiensis is a native earthworm of southeast asia, india, and. Download anatomy and physiology pdf pdf free download free medical books pdf download microbiology pdf free anatomy and physiology pdf preface. Pdf morphological characters and histology of pheretima.
These are the unit sections, and the names of the files. Navs now offers free downloads of the virtual reality dissection program froguts. Holt biosources lab program skills practice labs teacher resource page perch dissection continued. Locate the clitellum which is on the anterior end of the worm. Biology keystone prep links frog dissection external. While dissecting, be respectful of your lab partners and of the specimen you are about to explore, observe and learn from.
Study the digestive, circulatory, reproductive and nervous system of the earthworm with preserved earthworm dissection specimens. Drag and drop the labels to the matching structures of the illustration. Use dissection pins to secure each end on the tray. In this article, we cover earthworm anatomy and how to dissect and earthworm safely in the lab of a college or university. The ventral side appears flatter than the other side of the worm.
For purpose of dissection, generally, fresh animals are. These are all of the printable files which have been used for the third quarter. It is the swelling located from segments 33 to 37 and is near the anterior end. Bird pigeon dissection powerpoint bonyfish evolutionary biology perch dissection perch dissection photos cat anatomy corner continued. To identify the organs of the digestive system of the earthworm. If you buy your worm online already prepared for dissection, it may come in alcohol. Lift up the skin with a pair of forceps and snip an opening with a pair of dissecting scissors. Each is filled with liquid, and each has its own setof muscles. Earthworm bodies begin to dry and shrivel quickly after death. So depending on what exactly you are searching, you will be able to choose ebooks to suit your own needs. Insert the scissors into the opening and cut in a straight line all the way up.
Examine your earthworm and determine the dorsal and ventral sides. Storage of sperm received from another worm nerve cord. To learn the external and internal anatomy of the earthworm. There is so much more to dissections than cutting up an animal. Earthworm dissection instructions 1 make sure you have all of the. The virtual dissection can be found on this website. Cut open the skin and expose organs from about 30th segment to the anterior end of the worm. Youll love our ecofriendly 3d scienstructable dissection models which can be used as a dissectionfree exploration, a predissection tool, or as a summative assessment for comparative anatomy.1161 806 567 1065 1405 896 938 1140 1322 569 1278 958 797 197 1259 1533 1084 1590 1481 488 1338 790 63 424 1175 1385 1548 558 1498 255 549 1394 358 1446 1125 701 982 125 549 622 834 176 1407 461