Lab 1-Trichinella

Question 1

Subkingdom of Trichinella?

Answer 1

Eumatazoa

Question 2

Phylum of Trichinella?

Answer 2

Nematoda

Question 3

Where do adult trichinella live in definitive host?

Answer 3

inside small intestinal mucosa

Question 4

Definitive host?

Answer 4

Birds and mammals

Question 5

How many molts before larvae enters adulthood?

Answer 5

4

Question 6

Where do L1 live in host?

Answer 6

skeletal muscle cells

Question 7

What is a nurse cell?

Answer 7

• Muscle cell that was taken over by L1

- no striations

Question 8

How does L1 larvae enter L2 stage?

Answer 8

By being digested by another host

Question 9

Ovoviviparity

Answer 9

• Young is born in eggs that develop inside the mother’s body
• here, eggs hatch in the uterus

Question 10

How do the males find the females?

Answer 10

Nearby females release pheromones to attract males

Question 11

What are stichocytes?

Answer 11

• secretory cells surrounding the esophagus

- looks like stacked disks

Question 12

What is the stichosome

Answer 12

The series of stichocytes and the esophagus they surround

Question 13

Which end of the larva is thicker and rounded?

Answer 13

Posterior

Question 14

Which end has the stichosome?

Answer 14

anterior

Question 15

What is the posterior end of larvae mostly containing?

Answer 15

genital primordium

Question 16

What is genital primordium?

Answer 16

collection of cells in larval organisms that will develop into reproductive tract

Question 17

Does Trichinella have separate sexes?

Answer 17

yes

Question 18

Does it undergo asexual reproduction?

Answer 18

No

Question 19

How many hosts does it need to complete a life cycle?

Answer 19

1