Final answer:
Dissecting a pig's heart or frog can help students understand body systems by providing a hands-on experience, observing the structures of the heart, and making connections between different species.
Step-by-step explanation:
The dissection of a pig's heart or frog can help us understand body systems in several ways. First, it provides a hands-on experience that allows students to see the structures and organs of the heart up close. This can help them develop a better understanding of how the heart functions and how it is connected to other body systems.
Second, the dissection allows students to observe the different chambers, valves, and blood vessels of the heart, which helps them understand the process of circulation and how blood is pumped throughout the body.
Finally, by dissecting the heart and comparing it to the human heart, students can make connections between different species and gain a broader understanding of anatomy and physiology.