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Microbiology > Helminthes study guide number 2 > Flashcards

Helminthes study guide number 2 Flashcards

(58 cards)

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1
Q

Microscopic, multicellular eukaryotic worms. Many of which are pathogenic

A

Helminthes

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2
Q

Each worm has both sex organs

A

Monocious

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3
Q

Male and female sex organs in different worms

A

Dioecious

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4
Q

Parasite Helminthes divided into 3 groups

A

Cestodes
Trematodes
Nematodes

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5
Q

Phylum Platyhelminthes; Class Cestoda include

A 
Cestodes
Teania Saginata
Taenia Solium
Echinococcus granulosus
Diphyllobothrium Latum
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6
Q

Cestodes are _________ animals

A

Acoelomate

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7
Q

Cestodes are composed of Scolex and a body these can be defined as

A

Scolex-Like a head; has hooks at the top to attach to tissues (No mouth)
Body-Is flat and long; made of proglottid; has both sexes inside

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8
Q

Mature are found in cestoda; these can be defined as

A

(Middle proglottid) working reproductive structures

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9
Q

Gravid are found in cestoda; theses can be defined as

A

(End of proglottid) filed with fertilized eggs, ready to infect new host; Gravid proglottids break off, pass through feces

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10
Q

Teania saginata is also known as

A

Beef tapeworm

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11
Q

What is the definitive host of the Teania Saginata

A

Humans

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12
Q

Life cycle of the Teania saginata

A
  • Humans are the definitive Host
  • Humans shed eggs and egg filled proglottids
  • Cows eat the eggs (Alternate Host)
  • Eggs hatch in the cow and become immature larvae called cysticercus
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13
Q

Taenia Solium is also known as

A

Pork Tapeworm

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14
Q

Taenia Solium is made of __________ and pass them via _________.

A

Proglottids

Fecal Matter

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15
Q

What is the definitive host for the Taenia Solium

A

Humans

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16
Q

Echinococcus granulosus is also known as the

A

Dog tapework

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17
Q

The echinococcus granulosus has only ____ proglottids

A

3

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18
Q

Who is the definitive host of the Echinococcus Granulosus

A

The Dog

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19
Q

Life Cycle of the Echinococcus Granulosus

A
  • The adult lives in the intestines of the dog

- Sheds eggs (poop) and herbivores eat the eggs

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20
Q

Occasionally humans can ingest food contaminated by dog feces and ingest larvae which forms ________.

A

Hydatid cysts

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21
Q

Diphyllobothrium Latum is also known as the

A

Fish Tape Worm

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22
Q

Who is the definitive host of the Diphyllobothrium Latum

A

Humans (gut)

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23
Q

Life cycle of the Diphyllobothrium Latum

A
  • Eggs exit feces into water
  • Eggs hatch and coracisium larvae come out
  • Coracidium are eaten by copepods (alternate host)
  • Copepods are eaten by fish
  • Larval form develops in the fish muscle
  • Humans eat the fish
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24
Q

Phylum Platyhelminthes; Class Trematoda (The flukes)

Study These Flashcards
A

-Trematoda
-Fasciola Hepatice
-Clonorchis sinensis
The blood Flukes
-Schistosoma species

25
Acoelomate (Trematoda)
No body cavity
26
* Oral Sucker * An incomplete Digestive system (No Anus) * *Pharynx * *Muscular Esophagus * *Two long unbranched intestines down both sides * Hermaphroditic (monoecious) * *Large testis * *Uterus * *Small ovaries
Characteristics of typical Trematode
27
Features of Fluck
``` Oral Sucker Ventral Sucker Eggs in Coiled Uterus Intestines Ovary Branched Testes ```
28
Fasciola Hepatice is also known as the
Liver fluke
29
To Aquire Liver fluke
Get from eating aquatic vegetation such as watercress
30
Pathology of the fasciola Hepatice
* Excystment occurs in intestines * Larvae go from intestine to liver * Fluke feed on liver cells and RBC while in liver * Go to bile ducts and replace tissue with fibrous tissue. *Can result in abdominal pain, diarrhea, and abscess on the liver
31
Causes liver damage and necrosis (death of tissue)
Live Fluke or Fasciola Hepatice
32
Clonorchis Sinensis is also known as
Chinese liver Fluke
33
Who is the definitive host of the Clonorchis Sinensis
Humans
34
The Clonorchia Sinensis has a intermediate and alternate host
Intermediate; Snail | Alternate; Fish
35
Clonorchis sinensis pathology
* Fluke erode the bile ducts * Thickening and occlusions of the bile duct * Interferes with liver function * Eggs released feces, then hatch into miracidia in H20 * The Miracidia then penetrate snails, then burrow out and penetrate fish * Humans then become infected by eating undercooked fish
36
There are 3 types of Blood Flukes:
Shistosoma Mansoni Shistosoma Japonicum Shistosoma Haematobium
37
The blood fluke have
two different sexes (Diecious)
38
Shistosoma Mansoni and Japonicum
Live in vessels surrounding the intestines
39
Shistosoma Haematobium
Live in vessels arround the bladder
40
Simple life cycle of the Shistosoma
* Eggs exit in the urine or feces * In water eggs hatch into Miracidium, which enters snail * Cercariea develop, and exit out of snail, penetrate skin of humans and burrow into host
41
Phylum Nematoda; Class Secernentea
Round worms Ascaris Lumbricoides Necator Americanus Enterobius Vermicularis
42
Class Secernentea is known as
Round worm
43
Round worm have a ________ digestive tract
Complete
44
False body cavity
Pseudocelmate
45
- Their body is a cavity filled with fluid surrounded by muscle - Flex the muscle to move the fluid this opens and closes their mouth
Round worms
46
There are 12,000 species named so far | ---some specialists think there are up to 500,000
Round worm
47
They infect Vertebrates and invertebrates | -They are found in water and soil
Round worms
48
Roundworm exhibit
Mouth ----> Pharynx ---> Long intestine ----> Anus
49
Roundworms are mostly found as two different sexes
(Diecious)
50
Ascaris Lumbricoides is also know as the
Round Work Disease
51
Who are the definitive host for Ascaris Lumbricoides
Humans (Intestines)
52
Life cycle for Ascaris Lumbricoides
- Adult worm lives in the human intestine - Eggs are released in feces - Eggs get on food and water and are ingested by humans hatch in duodenom
53
Necator Americanus is also known as
Hook Worms
54
Juveniles can burrow through your feet Hook to the intestines and drink blood They have large plates in their mouth Juveniles can survive in the soil for weeks Get from walking on soil with fecal material
Hook worms
55
Pathology of Necator Americanus
- Eggs in feces - Hatch in soil - Burrow into your feet - Get into the blood vessels and travel to heart then to lungs and trachea - Larvae are swallowed then travel back to the intestines
56
Enterobius Vermicularis is also known as the
Pin worm
57
Who is the definitive host to Enterobius Vermicularis
Humans (Intestines)
58
Live cycle for the Enterobius Vermicularis
Live in the intestines * Females lays eggs, becomes irritable and itchy - Scratching disperses eggs in fingernails, clothes and bedding, people ingest the eggs to get infected

Microbiology (26 decks)

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