Biology

Module #1: Earthworm Dissection – Friday March 2, 2012

In small groups, we assessed the external anatomy of an earthworm. We identified the setae, which help the earthworm grip the ground, and noted the closed circulatory system of the worm. Each group dissected its own earthworm. Upon exposing the internal organs of the earthworm, the group leaders moderated a discussion amongst the students on the structure and function of the organs in the digestive system of the worm (pharynx, esophagus, crop, gizzard, intestine). We identified the five pseudo-hearts, the seminal vesicles and receptacles, and drew analogies from all of the earthworm’s systems to the human systems. As one of the public school students reiterated to the class during the review, “you can learn a lot from worms.”

Module #2: Respiration – Thursday March 15, 2012

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