Which shape best describes the heart?

Which shape best describes the heart?

• A. Cone-shaped
• B. Hollow
• C. Muscular
• D. Circular

Answer: (A)

Describe the heart’s external silhouette: it’s a muscular organ with a broad base at the top and a pointed apex at the bottom. This gives an outline that resembles a cone, making cone-shaped the best descriptor for its overall shape. Saying it’s hollow misleads about the exterior form, since the interior is filled with chambers but the shape itself is about the outer contour; circular isn’t accurate because the heart is elongated and tapered, not a perfect circle. Describing it as muscular is true for its tissue, but that doesn’t capture the external shape.