Subphylum Vertebrata: Ectotherm vs Endotherm, Heart Chambers, Cartilage vs Bone
This video gives a quick overview into the different key characteristics of organisms in Subphylum Vertebrate (found in Phylum Chordata). We also explore the differences between ectotherms and endotherms, differences between 2-, 3-, and 4-chambered hearts, and skeletons made of bone versus cartilage. While many of these characteristics are not unique to vertebrates, they do vary within the group providing insight into their evolution and characteristics.