1. Biology 1102
Lecture 5

2. Slide 2 - Animalia

3. Slide 3 – True body cavity (coelom)

4. Slide 4 - Coelomates

5. Slide 5 – Fertilizing an egg

6. Slide 6 – Mitosis (interphase)

7. Slide 7 – Formation of the blastomere

8. Slide 8 - Blastula

9. Slide 9 - Morphogenesis

10. Slide 10 - Gastulation

11. Slide 11 – Blastopore and Archenteron

12. Slide 12 - Neurulation

13. Slide 13 – Radial and spiral cleavage

14. Slide 14 – Cleavage patterns

15. Slide 15 – Protostome and deuterostome body plan

16. Slide 16 – Protosomes - schizocoelom
The blastopore is the single opening of the archenteron and in protosomes, the blastopore forms the mouth.
The development of the mesoderm in protosomes are called schizocoelom
which is defined as the developing mesoderm rises from the area near the blastophore where division takes place forming the mesoderm

17. Slide 17 – Deuterostomes - enterocoelom
In deuterosomes, the blastopore (single opening of the archenteron) forms the anus.
The development of the mesoderm is called an enterocoelom which is defined as the developing mesoderm rises from a pair of mesodermal pouch from the primitive gut (endoderm). This pouch enlarges until they meet and fuse

18. Slide 18 - Mollusca

19. Slide 19 – Molluscs – general structure

20. Slide 20 – Type of circulatory system comparison

21. Slide 21 – Molluscs - bivalves

22. Slide 22 – Molluscs - cephalopods

23. Slide 23 – Giant squid

24. Slide 24 – Molluscs - gastropods

25. Slide 25 – Annelids - Segmented worms

26. Slide 26 – Phylum Annelida – Class Polychaeta

27. Slide 27 – Phylum Annelida – class Oligochaeta

28. Slide 28 - Phylum Annelida – Class Hirudinea

29. Slide 29 – Leeches in medicine