Intro to parasit

Question 1

concerned with the phenomenon of dependence of one living organism on another

Answer 1

Parasitology

Question 2

concerned with the animal parasites of humans and their medical significance

Answer 2

Medical parasitology

Question 3

deals with tropical diseases

Answer 3

Tropical medicine

Question 4

living together of unlike organisms

Answer 4

Symbiosis

Question 5

two species live together and 1 specie benefits without harming the other
example?

Answer 5

Commensalism (e.g. Entamoeba coli)

Question 6

2 organisms mutually benefits from each other
example?

Answer 6

Mutualism (e.g. termites, flagellates)

Question 7

parasites lives for its survival
example?

Answer 7

Parasitism (e.g. Entamoeba histolytica)

Question 8

A. Intestinal illness
B. parasite

Answer 8

Amoebiasis
Entamoeba histolytica

Question 9

Parasites

According to its habitat

A. living inside the body
B. living outside the body example?

Answer 9

A. Endoparasite
B. Ectoparasite (e.g. ticks)

Question 10

Parasites

A. presence of endoparasite in a host
B. presence of ectoparasite in a host

Answer 10

A. infection
B. infestation

Question 11

need a host (dependent) at some stage of their life cycle to complete their development
example?

Answer 11

Obligate parasite (e.g. tapeworms such as A. lumbricoides)

Question 12

free-living state and a parasitic existence
example?

Answer 12

Facultative parasite (e.g. S. stercoralis)

Question 13

visit the host only during feeding time
example?

Answer 13

Intermittent (e.g. mosquitos)

Question 14

establishes itself in a host where it does not ordinarily live

Answer 14

Incidental/accidental parasite

Question 15

remains in the body until maturity

Answer 15

Permanent parasite

Question 16

artifacts mistaken as parasite (pollen, hair)

Answer 16

Pseudoparasite

Question 17

lives on a host only for a short period of time

Answer 17

Temporary parasite

Question 18

free-living organism passes through digestive tract w/o infecting the host

Answer 18

Spurious parasite

Question 19

Hosts

A. attains sexual maturity
B. asexual stages or larval stage
C. does not develop further to later stages
D. allow parasite’s life cycle to continue and become additional sources of human infection
E. infected indiv is not necessary for the parasite survival

Answer 19

A. definitive (humans)
B. intermediate
C. paratenic (prawns)
D. reservoir (rodents)
E. Incidental (trichinosis)

Question 20

Nomenclature

Answer 20

Phylum
Class
Order
Family
Genus
Species

Question 21

Division: (suborder, superfamily, subfamily, subspecies)

A. Family name
B. Superfamily
C. Subfamily

Answer 21

A. -idae
B. -oidea
C. -inae

Question 22

Modes of transmission

A. undergo development in the soil to reach the infective stage example?
B. in the snail to reach infective stage example?
C. in insect vectors example?
D. really infective example?

Answer 22

A. Soil-transmitted (e.g. A. lumbricoides, T. trichiura)
B. Snail-transmitted (e.g. S. japonicum)
C. Arthropod transmitted (e.g. malaria, filariasis, leishmaniasis, trypanosomiasis)
D. Contact transmitted (e.g. E. vermicularis, T. vaginalis)

Question 23

Example of …

Animal borne - animal to human
Airborne
Autoinfection - infecting ones self

Answer 23

Airborne - E. vermicularis, A. lumbricoides

Question 24

Portals of entry

Mouth (oral cavity)

A. Ingestion of?
B. Intimate oral contact

Answer 24

A. embryonated eggs (A. lumbricoides), cysts (Entamoeba histolytica)
B. T. tenax, E. gingivalis

Question 25

Skin (active penetration)

Answer 25

Hookworm
Schistosomes

Question 26

Sexual contact

Answer 26

Trichomonas vaginalis

Question 27

Transplacental

Answer 27

Toxoplasma gondii

Question 28

Transmammary

Answer 28

S. stercoralis

Question 29

Intranasal

Answer 29

Naegleria fowleri
Acanthamoeba culbertsoni

Question 30

Portal of exit

Answer 30

Stool (ova)
Urine (T. vaginalis, S. haematobium)
Sputum (Paragonimus westermani)
Blood (microfilaria, gametocytes)
Tissue biopsy