Lec 1: Classification of Medically important Parasites

Question 1

1 of the 3 major classifications of parasites that is single-celled.

Answer 1

Protozoans

Question 2

1 of the 3 major classifications of parasites that includes multicellular worms.

Answer 2

Metazoan helminths

Question 3

This phylum requires a wet environment for feeding, locomotion, osmoregulation and reproduction. They form trophozoites (active, feeding, reproduction) and cysts (inactive) except for Naegleria

Answer 3

Phylum Protozoa

Question 4

Type of nutrition of Protozoans

Answer 4

Holozoic (require organic materials)

Question 5

What phylum do subphyla mastigophora and subphyla sarcodina belong to?

Answer 5

Phylum Sarcomastigophora

Question 6

What type of locomotion does the parasite from subphyla mastigophora use?

Answer 6

Flagella

Question 7

Parasites from Subphyla Mastigophora undergo this specific type of reproduction.

Answer 7

Asexual (Longitudinal) Reproduction

Question 8

Subphyla Sarcodina utilize _____ as an organ for locomotion

Answer 8

Pseudopodia

Question 9

What Subphyla, under Phylum Sarcomastigophora, undergo asexual repoduction and may be found intra and extra intestinally.

Answer 9

Subphyla Sarcodina

Question 10

What trait/characteristic is common between Subphyla Sarcodina and Subphyla Mastigophora?

Answer 10

Type of Reproduction

Question 11

What phylum uses cilia as the organ of locomotion?

Answer 11

Phylum Ciliophora

Question 12

Phylum Ciliophora utilize this specific type of reproduction

Answer 12

Asexual (transverse) Reproduction

Question 13

This Phylum includes the Class Sporozoa

Answer 13

Phylum Apicomplexa

Question 14

This class utilize both sexual and asexual reproduction

Answer 14

Class Sporozoa

Question 15

Parasites from Class Sporozoa can be distinguished from other parasites because of the presence of a _____ at the anerior end.

Answer 15

Apical Complex

Question 16

This Phylum is spore-forming and possess a unique extrusion apparatus which enables them to insert infective material to the host cell

Answer 16

Phylum Microspora

Question 17

This Phylum is predominantly coelomate and is compartmentalized by septas.

Answer 17

Phylum Annelida

Question 18

Phylum Annelida has well-developed ______, ______, ______ body systems

Answer 18

Nervous, Digestive, Excretory

Question 19

The following class and subclasses are under Phylum Nemathelminthes.

Answer 19

Class Nematoda, Subclass Adenophorea, and Subclass Necernentia

Question 20

This class is also known as the Round Worms

Answer 20

Class Nematoda

Question 21

Characteristic of Class Nematoda. “tube within a tube”

Answer 21

pseudocoelomate

Question 22

The following are characteristics of class nematoda, EXCEPT: a. Unsegmented b. has complete digestive tract c. bilaterally symmetrical d. Triploblastic e. Dorsolaterally flattened

Answer 22

e. Dorsolaterally flattened Class Nematoda aka ROUNDworms

Question 23

This sensory organ of Nematodes is found at the anterior end and is the principal chemosensory organ.

Answer 23

Amphids

Question 24

This sensory organ of Nematodes is found at the posterior end and are important for the classification of this class.

Answer 24

Phasmids

Question 25

The only 3 APHASMID nematodes that are of medical and public health importance

Answer 25

Trichuris, Trichinella, Capillaria

Question 26

Parasites in this subclass are aphasmid nematodes that may be terrestrial, freshwater, or marine.

Answer 26

Subclass Adenophorea

Question 27

Parasites in this subclass are phasmid nematodes that are generally terrestrial

Answer 27

Subclass Secernentia

Question 28

Phylum Platyhelminthes is characterized by:... EXCEPT: a. Hermaphroditic b. Asexual Reproduction c. Dorsolaterally flattened d. symmetric bilaterally

Answer 28

b. Asexual Reproduction

Question 29

These are 2 classes under Phylum Platyhelminthes

Answer 29

Class Trematoda and Class Cestoda

Question 30

These are also called Flatworms or Flukes that have incomplete digestive tract and no circulatory system. They have oral suckers and venral suckers.

Answer 30

Class Trematoda

Question 31

Class trematoda require ___ intermediate host/s

Answer 31

2. 1st is always Snails

Question 32

What is the infective stage of the class trematoda?

Answer 32

Metacercariae (Encysted Larvae) -\> at 2nd intermediate host except SCHISTOSOMES

Question 33

Schistosomes is under what class? What is its infective stage?

Answer 33

Class Trematoda. Cercariae

Question 34

This class is composed of Tapeworms

Answer 34

Class Cestoda

Question 35

The following are characteristics of Class Cestoda, except: a. No digestive Tract b. No circulatory system c. Hermaphroditic d. with oral and ventral suckers e. with Scolex (anterior), neck, strobila

Answer 35

d. with oral and ventral suckers sa Class Trematoda yan

Question 36

2 orders under Class Cestoda that are of medical and public health importance

Answer 36

Order Pseudophyllidea & Order Cyclophyllidea

Question 37

which order has a uterine pore, spatulate scolex with bothria, operculated eggs, requires 2 intermediate hosts, and release immature eggs?

Answer 37

Order Pseudophyllidea

Question 38

The following are characteristics of _______ Bilaterally symmeterical Segmented bodies Jointed appendages Exoskeleton Class Insecta and Arachnida

Answer 38

Phylum Arthropoda

Question 39

These are all classes under Phylum Arthropoda, except: a. Class Crustacea b. Class Arachnida c. Class Aranaea d. Class Diplopoda

Answer 39

c. Class Aranaea Order lang ang Aranaea. Under Class Arachnida

Question 40

Parasite under Subphylum Mastigophora that is the cause of Chagas Disease & African Sleeping Sickness

Answer 40

Trypanosoma

Question 41

What class is the parasite that causes Malaria under?

Answer 41

Class Sporozoa

Question 42

What is the parasite in the picture? This belongs to what class?

Answer 42

Ascaris Class Nematoda

Question 43

Women are mostly affected by this parasite; STI

Answer 43

Trichomonas

Question 44

This is under the subclass adenophorea. This can cause rectal prolapse

Answer 44

Trichuris

Question 45

This is found in pigs, not well-cooked food, burrows in muscles. This is under what subclass?

Answer 45

Trichinella Under subclass adenophorea

Question 46

What is in the picture

Answer 46

Chilomastix

Question 47

Identify

Answer 47

Giardia

Question 48

What is the parasite found in between the RBC

Answer 48

Trypasonoma

Question 49

Identify

Answer 49

Leishmania

Question 50

stage in the life cycle that enables parasite to infect man

Answer 50

infective stage

Question 51

an organism that lives on or within another organism Derives the benefits May or may not suffer consequences

Answer 51

Parasite

Question 52

organism in/on which a parasite lives off of

Answer 52

host

Question 53

lives inside/within an organism

Answer 53

endoparasites

Question 54

host wherein the parasite continues any of its stages and acts as additional sources of human infection

Answer 54

reservoir host

Question 55

lives on the surface of an organism

Answer 55

ectoparasites

Question 56

parasites that cause direct harm to their host

Answer 56

pathogenic parasites

Question 57

parasites that do not directly cause harm to their host

Answer 57

commensals

Question 58

definitely need to live off host/s to survive

Answer 58

Obligate Parasites

Question 59

give examples of obligate parasites

Answer 59

Ascaris, Trichuris

Question 60

may live off of host/s or may exist in free-living form in the environment

Answer 60

facultative parasites

Question 61

host wherein the parasite lives off its adult and sexual stages

Answer 61

definitive host

Question 62

host wherein the parasite lives off its larval and asexual stages

Answer 62

intermediate host

Question 63

any organism responsible for transmitting parasitic infection from one host to another

Answer 63

Vectors

Question 64

stage in the life cycle that man usually identifies to confirm the presence of a parasitic infection

Answer 64

diagnostic stage

Question 65

non-organism that can transmit infection

Answer 65

fomite

Question 66

a kind of vector that carries parasite without changes in its stages

Answer 66

mechanical vector

Question 67

Parasites are more commonly infectious in this stage. _______ egg

Answer 67

Embryonated

Question 68

Nematodes and most cestodes are infectious during this stage.

Answer 68

Larvae

Question 69

which of the following types of larvae is not usually infective? \*clue: feeding stage

Answer 69

Rhabditiform \*\*Filariform -\> infectious

Question 70

What is the infectious stage of flukes?

Answer 70

Larvae

Question 71

What is the type of larvae that is commonly infectious stage for flukes?

Answer 71

Metacercaria

Question 72

For shistosomas, this stage of larvae is infectious.

Answer 72

Cercaria

Question 73

Protozoans are usually infective during these stages. (2)

Answer 73

Cysts & Trophozoites

Question 74

route in which a parasite exits the human body

Answer 74

mode of exit

Question 75

2 types of ingestion

Answer 75

fecal-oral & non-fecal

Question 76

2 types of skin penetration as mode of entry

Answer 76

Direct & vector-borne

Question 77

what is the mode of entry of Plasmodium spp-Malaria?

Answer 77

Skin penetration. Specifically, vector-borne

Question 78

the naegleria spp's mode of entry is \_\_\_\_\_\_

Answer 78

respiratory-direct penetration

Question 79

what are the 2 types of modes of entry under respiratory?

Answer 79

inhalation & direct penetration

Question 80

what are the 5 modes of entry? hint: BRISA

Answer 80

Blood transfusion/organ transplantation/vertical transmission Respiratory Ingestion Skin Penetration Autoinfection