LAB: Nematodes

Question 1

Nematodes

Answer 1

• commonly called roundworms
• Bilateral, pseudocoelomates
  
  • Hydrostatic skeleton
• Complete Digestive system
• Dioecious

Question 2

Phylum Nematoda

Question 3

Human Pinworm (Enterobius vermicularis)

Answer 3

• Lower digestive tract
• Deposit eggs on perianal skin
• Enter through:
  
  • Anus directly
  • Anus-to-hand-to-mouth

Question 4

Trichina worm (Trichinella spiralis​)

Answer 4

• Causes trichinosis
• live in intestinal walls of host
• migrates to tissues - live in cysts
• pass b/w host by consumption of uncooked meats

Question 5

Human intestinal roundworm or ascaroid (Ascaris lumbricoides)

Answer 5

• Males distinguished by a ventrally curved tail that forms a hook for copulation with the female