Others discussed theories of why a heart shape does not look more like the ... bodily systems and see similarities between the parts of the frog and human body parts. She said the dissection lesson is ...

More than 12 million animals, including frogs, cats, rats, fetal pigs, fish and a variety of invertebrates are used for dissection in the US each year. At a time when numerous interactive and ...

You can “peel back layers” and view individual body systems inside the frog—for example, the skeletal system, the muscular system, or the digestive system. (3) “Dissection,” with which you can conduct ...