EXERCISE 1: Phylum Nematoda – Roundworms ( Ascaris )

• Dissection: anus, testis (male), ovaries and uterus (female)
• Slide: cutiole, epidermis, intestine, muscle fibers, ovaries, oviducts, uteri, ventral nerve cords

EXERCISE 2: Phylum Arthropoda

Lab Study A. Crayfish (Cambarus)

• Dissection: head, thorax, abdomen, gills, carapace, heart, stomach, intestine, green glands, brain, nerve cord

Lab Study B. Grasshoppers (Romalea)

• Dissection: head, thorax, abdomen, spiracles, tracheae, hemocoel, esophagus, stomach, intestine, rectum, anus, Malpighian tubules, ventral nerve cords

EXERCISE 3: Phylum Echinodermata – Sea Star )

• Specimen: water-vascular system, madreporite, tube feet, aboral (upper) surface, oral surface, central disk, skin gills

EXERCISE 4: Phylum Chordata

Lab Study A. Lancelets (Branchiostoma)

• Specimen: rostrum
• Slide: gill slits, post-anal tail, atrium, atriopore, nerve cord, notochord

Lab Study B. Fetal Pigs(Sus Scrofa) - SKIP