Address the items below as they relate to human embryology; a) discuss when the germ layers of human development begin to form, explain how each originates, explain what each will differentiate into, and what happens to each layer immediately after formation b) distinguish the developmental differences between a 20 day old embryo and a 4wk embryo in humans.
Animal Diversity
Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.
Platyhelminthes
Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.
Address the items below as they relate to human embryology;
a) discuss when the germ layers of human development begin to form, explain how each originates, explain what each will differentiate into, and what happens to each layer immediately after formation
b) distinguish the developmental differences between a 20 day old embryo and a 4wk embryo in humans.
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