Week Four: Annelida (Chapter 15) Flashcards Preview

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Flashcards in Week Four: Annelida (Chapter 15) Deck (19):
1

Kingdom: Animalia
Phylum: ____?___
Class: Hirudinea

Annelida

2

What type of parasites are in annelida?

Leeches and earthworms

3

What is the morphology of leeches?

Slender, leaf shaped bodies
2 sucks (larger posterior, smaller anterior)
Segmented
No exoskeleton

4

What is the smaller, anterior sucker of a leech called?

Pseudosucker

5

What does "annelida" mean?

Segmented

6

Where do leeches live?

Fresh water, salt water, moist, damp locations

7

How do leeches attach to the host?

Caudal sucker

8

What is hirudin?

Anticoagulant passed by leeches
Most powerful anticoagulant known

9

What do leeches look like when they are engorged with blood?

Dark and bloated

10

Explain the morphology of a leech

Mouth leads to pharynx with salivary glands that secrete hirudin
That leads to crop where ingested blood is stored
hermaphroditic

11

What is the invasion of the nose, mouth, pharynx, or larynx by leeches called?

Hirudiniasis

12

What are some ways you can detach leeches?

-Salt solution
-Alcohol
-Vinegar
-Lighted match

13

What are the leeches that is of veterinary significance and infests monkeys and domestic animals?

Limnatis and Dinobdella

14

What is the leech that infests wild and domestic aquatic birds

Theromyzon tessulatum

15

Aquatic leeches may cause...

-Nosebleeds
-Coughing up blood
-Vomiting blood
-Dyspnea
-Pain
-Suffocation
-Difficulty swallowing

16

What is the medicinal leech called?

Hirudo medicinalis

17

Hirudo medicinalis:
Host, common name, location of adult, transmission route

Host: Humans
Common name: Meicinal leech
Location of adult: skin
Transmission route: Intentional placement for medicinal purposes

18

What do hirudo medicinalis look like?

Green pigmented pattern with brown stripes

19

What are hirudo medicinalis used for? (examples)

Reconstructive sx
Microvascular sx
Veterinary sx and medicine