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Biology LibreTexts

Roundworms

Ascaris Dissection

1. Obtain a female Ascaris and place it on a dissecting pan. The posterior end is curved in males and straight in females.

2. Make a shallow longitudinal cut the length of the worm and pin it open as illustrated below.

3. Identify the gut, ovary, oviduct, uterus, and vagina.

Trichinella

View a prepared slide of Trichinella in the muscle tissue of a host organism.

Trichinella spiralis encysted
in muscle tissue of a host
X 40