CHM101H1 Lecture 1: Animal II Nematode Dissection 2018
Document Summary
Keep your hands away from your eyes, nose and mouth to avoid possible contamination. One group member collect the following materials: a preserved roundworm, ascaris sp. , 1 dissection dish, 1 set of pins, 1 pair scissors, 1 probe and i pair forceps, nematode dissection guide. External anatomy: first determine the sex of your nematode. Use table 1 as a guide: examine and identify the external anatomy of the roundworm locate the following structures - mouth and tri-radiate lips, cuticle, lateral lines, anus, female genital opening or male anal spicules. (refer to table. Photograph and save a photo the general external anatomy. External features of sexual dimorphism in the nematode, ascaris sp. A pair of needle like penial setae in cloaca. Dissection procedure: use dissecting pins to secure the head and tail ends to your dissecting dish, use scissors to make an incision through the body wall of the nematode near the mouth.
