Hookworm
The Hookworm lives in the intestine of mammals such as dogs, cats and humans. They are known for their long, skinny and unsegmented bodies. Inside, they have three flesh layers, exoderm, endoderm, and mesoderm. Their nervous system is identical to the other nematoda, with a nerve ring and four peripheral nerve cords. Their parasitic nature allows such simple way of life, with two openings in the body, and grow just millimeters in length.
The Hookworm lives in the intestine of mammals such as dogs, cats and humans. They are known for their long, skinny and unsegmented bodies. Inside, they have three flesh layers, exoderm, endoderm, and mesoderm. Their nervous system is identical to the other nematoda, with a nerve ring and four peripheral nerve cords. Their parasitic nature allows such simple way of life, with two openings in the body, and grow just millimeters in length.