BIOL 2030 Chapter Notes - Chapter 5: Connective Tissue, Nephridium, Leech

• School: York University
• Department: Biology
• Course: BIOL 2030
• Professor: Andrew Donini

Document Summary

Mouth is the first segment (cid:131) prostomium not a segment. Setae: tiny bristle like structure used for locomotion. Clitellum:: secretes the cocoon in which the eggs are deposited (cid:120) (cid:120) Gametes form in the testis and then mature in the seminal vesicles. Identify: (cid:190) cuticle (cid:190) epidermis (cid:190) circular muscle (cid:190) longitudinal muscle layer (cid:190) peritoneum (cid:190) coelom (cid:190) intestine (cid:190) ventral nerve chord (cid:190) blood vessels: dorsal, ventral, sub-neural (cid:120) Identify (dissection): (cid:190) enlarged pharynx (segment 4) (cid:190) dorsal blood vessel (cid:190) alimentary canal (cid:190) five pairs of pseudohearts (cid:190) esophagus (cid:190) crop (cid:190) gizzard (cid:190) intestine (cid:190) calciferious glands(white) (cid:190) paired nephridia (cid:120) Identify (reproduction system): (cid:190) seminal vesicles (cid:190) seminal receptacles (cid:190) orvaries (cid:190) oviduct (cid:190) testes (cid:190) sperm duct (cid:190) sperm funnels (white, delicate flower like bodies) (cid:120) Segment is broken up into a number of annuli ring. Identify (external): (cid:190) anterior sucker (cid:190) mouth (cid:190) ventral sucker (cid:190) dorsal surface (cid:190) eyes (cid:120)