Platyhelminthes
*General Characteristics
1.) Flattened Dorsoventrally, Triploblastic, Acoelomate, Bilaterally Symmetrical
2.) Unsegmented worms
3.) Blind Gut: Incomplete usually present
4.) Cephalized with an anterior cerebral ganglion and usually longitudinal nerve cords
5.) Protonephridia as excretory/ osmoregulatroy structures
6.) Most forms monoecious; a complex reproductive systems
7.) Nervous system consists of a pair of anterior ganglia with longitudinal nerve cords connected by transverse nerves and located in the mesenchyme
2.) Unsegmented worms
3.) Blind Gut: Incomplete usually present
4.) Cephalized with an anterior cerebral ganglion and usually longitudinal nerve cords
5.) Protonephridia as excretory/ osmoregulatroy structures
6.) Most forms monoecious; a complex reproductive systems
7.) Nervous system consists of a pair of anterior ganglia with longitudinal nerve cords connected by transverse nerves and located in the mesenchyme
*Parenchyma: loose tissue
- fills space between other specialized tissues, organs, and body wall
- provide skeletal support, nutrient storage, motility, reserves of regenerative cells, transport of materials, structural interactions with other tissues, modifiable tissue for morphogenesis, oxygen storage, etc.