Tag: frog

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Rat Dissection

Students in biology are often tasked with dissecting a frog, but there are many other vertebrate models that can provide a rich experience in learning anatomy.   Common specimens include the fetal pig, shark, mink, cat, and the rat.   Rats are fairly inexpensive and are raised for …

Stomach and Pyloric Sphincter Valve

The pyloric sphincter valve is found between the stomach and the duodenum of the small intestine.  It regulates the passage of food from the stomach into the small intestine.  On the dissected frog below, the black pin indicates the stomach and the red indicates the location of the …