Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Microbiology > Lecture 19 > Flashcards

Lecture 19 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Types of Metazoa parasites

A

cestodes, trematodes, nematodes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are cestodes?

A

tape worms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How many parts do tape worms have?

A

2- rounded head and flat body of multiple segments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the rounded head of the tape worm known as?

A

Scolex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the flat body of multiple segments of the tape worm called?

A

proglotids

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the host of tape worms?

A

human

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

4 types of tape worms?

A

pork, beef, fish, and dog tape worms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What do pork tape worms cause?

A

disease known as cysticircosis in humans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define cysticerci

A

name of larvae in pork

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens when humans swallow eggs?

A

larval form cysticerci develop in various organs like brain and eye where they encyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What will happen when the cysticerci is in brain

A

mimic brain tumors and causes headache, vomiting, seizures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What will happen when cysticerci is in the eye?

A

may cause uveitis and retinitis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Where is the pork tape worm most common?

A

Asia, S. America and eastern Europe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Treatment for adult pork tape worms

A

Praziquintal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Treatment for cysticercosis from pork tape worms

A

surgical excision

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Transmission of beef tape worm

A

humans infected by eating under cooked beef containing larvae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Who is the host of beef tape worm?

A

human

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Who is the intermediate host of beef tape worm?

A

cattle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Where is beef tape worm commonly found?

A

Africa, S. America and Eastern Europe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Clinical features of beef tape worm?

A

adult worms do not cause symptoms- proflatids protrude through anus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Treatment for beef tape worm?

A

Praziquental

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Transmission of fish tape worm?

A

eating raw/uncooked fish containing larvae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Symptoms for adult worm fish tape worm

A

asymptomatic- may produce anemia due to B12 deficiency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What does dog tape worm cause?

A

hydatid cyst in humans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Who is the definitive host in dog tape worm?

A

dog

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the intermediate host for dog tape worm?

A

sheep

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the dead and intermediate host of dog tape worm?

A

human

28
Q

Transmission of dog tape worm

A

worms in the dog liberate thousands of eggs- ingested by sheep or human and embryo emerges into intestine and migrates to liver, lung, bone and brain

29
Q

Where do the large fluid filled hydatid cyst develop in the body?

A

brain, lung, liver

30
Q

What does hydatid cyst cause?

A

causing pressure effects on tissue

31
Q

Treatment of dog tape worm

A

surgical removal to prevent accidental dissemination- hypertonic saline injection used

32
Q

Life cycle of trematodes?

A

a sexual cycle (in humans) and an asexual reproduction in freshwater snails (intermediate host_

33
Q

Transmission of trematodes to human

A

occurs either through penetration of skin by free-swimming larval form (cercaria) or via ingestion of cysts

34
Q

What is the name for free-swimming larval?

A

cercaria

35
Q

What are the two things that schistosoma effects?

A

GIT and urinary tract- the forms exist as separate sexes

36
Q

Where do S. mansoni and S. Japanicum live?

A

in mesentric veins draining the intestines

37
Q

Where do S. Hematobium live?

A

in pelvic veins draining the bladder

38
Q

What is the size of an adult Schistosoma worm

A

1-4 inches

39
Q

How does human infection of Schistosoma occur?

A

in water- when you swim in ponds or lakes- penetrate legs and enter blood circulation to reach liver

40
Q

Clinical manifestations of Schistosoma?

A

most are asymptomatic- granulomas in liver, portal hypertension, enlarged liver and spleen, GI bleeding, granulomas in bladder causing hematuria

41
Q

How do you diagnose Schistosoma in the lab?

A

finding characteristic eggs in stools

42
Q

Treatment for Schistosoma

A

Praziquental

43
Q

What are Nematodes?

A

round worms

44
Q

2 types of Nematodes

A

intestinal and tissue nematodes

45
Q

Describe what Nematodes look like?

A

have cylindrical body with complete digestive systems from mouth to anus- body has acellular resistant coating- female larger than male, 2 larval forms!

46
Q

What is the host for nematodes?

A

human

47
Q

Intermediate host for Nematodes?

A

NONE

48
Q

What do Nematodes cause?

A

eosinophilia and allergy

49
Q

What are enterobius vermicularis?

A

pin/thread worm

50
Q

Transmission of enterobius vermicularis

A

eggs are ingested- hatch in small intestines and migrate to colon

51
Q

Who is enterobius vermicularis common in?

A

children

52
Q

Clinical manifestations of Enterobius vermicularis?

A

perianal pruritus, scratching

53
Q

What country is Enterbius vermicularis most common in?

A

US

54
Q

Lab diagnosis for Enterobius vermicularis

A

eggs not found in stool- may be in perianal scrapings

adult worms can be seen in stool or diapers

55
Q

Treatment for Enterobius vermicualris

A

Mebendazol or pyrental palmoate

56
Q

What type of worm is Ascaris lumbricoides?

A

round worm

57
Q

How does human infection of Ascaris lumbricoides occur?

A

ingestion of egg in soil contaminated with human feces hatch in small intestines and larvae spreads through blood stream

58
Q

Where can Ascaris lumbricoides be found?

A

in intestinal lumen- not attached to walls- live on ingested food

59
Q

Clinical manifestations of Ascaris lumbricoides

A

larval migration through lungs causes eosinophilia, chronic bronchitis and cough

60
Q

What can adult round worm cause?

A

malnutrition

61
Q

Where are Ascaris lumbricoides common?

A

in tropical countries

62
Q

Lab diagnosis of Ascaris?

A

detection of eggs ins tools- sometimes adult worms are passed in stools

63
Q

Treatment for ascaris?

A

Mebendazol and pyrantel palmoate

64
Q

Prevention for Ascaris?

A

proper disposal of night soils

65
Q

What are the two types of Hook worms?

A

Ankylostoma duodenale, necator americanus

66
Q

Transmission of hook worm?

A

attaches to gut wall and sucks blood, worm produces anticoagulants which prevent clotting- can produce anemia if enough blood loss

Microbiology (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions