Lab 21 - Nematoda

Label this female ascaris dissection

a: anterior

b: posterior

c: pseudocoelom

d: intestine

e: oviduct

f: uterus

g: vagina

h: lateral line (excretory)

This female ascaris has a complete or incomplete digestive tract?

Complete

What is the common name of this organism?

Ascaris cross-section

Label all parts of this ascaris

a: cuticle surrounding epidermis

b: longitudinal muscles

c: pseudocoelom

d: uterus

d: oviduct

f: intestine

Identify which ascaris is male vs female

Top: female Bottom: male

How can you tell the bottom ascaris is a male?

Because the male has a hooked end

What is the common name of this organism?

Vinegar Eels (Turbatrix)

The vinegar eels move with lashing motion due to having only … muscles

Longitudinal

What is the common name of this organism?

Trichinella cysts

The circle shows what?

Cyst

What is the cause of trichinosis?

Eating undercooked pork, bear, human, and rat

What is the common name of this worm?

Heartworms (dog heart)

Worms develop from larvae called … that are contracted from a … bite.

Microfilaria, mosquito