7th Edition by Leventhal and Cheadle
,Chapter 1. Introduction
1. In a general nematode parasite’s life cycle, the host may ingest a fertile egg. This stage of the
life cycle is known as the:
a. Definitive host phase
b. Diagnostic stage
c. Infective stage
d. Method of infection
2. A parasite that lives inside a host is known as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
TOP NURSING
SOLUTIONS
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
4. An animal that harbors a parasite that can also infect humans is known as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
5. The host in which the parasite reaches sexual or reproductive maturity is known as a(n):
a. Definitive host
b. Intermediate host
,c. Reservoir host
d. Transport host
Answer Key for Chapter 1. Introduction
1. In a general nematode parasite’s life cycle, the host may ingest a fertile egg. This stage of the
life cycle is known as the:
a. Definitive host phase
b. Diagnostic stage
c. Infective stage
d. Method of infection
CORRECT CHOICE✔✔ C
DETAILED ELABORATION: This is the stage of the life cycle at which the parasite is
capable of entering and developing within the host. It is a required part of the life cycle of that
parasite.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
2. A parasite that lives inside a host is known as a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite TOP NURSING SOLUTIONS
, CORRECT CHOICE✔✔ C
DETAILED ELABORATION: Endoparasites live inside the host. Ectoparasites live on the
outside of the host. Facultative parasites can live as well outside the host as inside the host;
host infection usually occurs accidentally. Other accidental parasites may include parasites
that usually infect other animals.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
3. Zoonosis is a term used to describe humans’ relationship with a(n):
a. Accidental parasite
b. Ectoparasite
c. Endoparasite
d. Facultative parasite
CORRECT CHOICE✔✔ A
DETAILED ELABORATION: Zoonosis is an accidental infection with a parasite that usually
parasitizes animals. Endoparasites live inside the host. Ectoparasites live outside the host.
Facultative
parasites can live as well outside the host as inside the host; host infection usually occurs
accidentally.
KEY: Introduction: parasite definitions/life cycles | Cognitive level: recall
4. An animal that harbors a parasite that can also infect humans is known as a(n):
a. Definitive host
b. Intermediate host
c. Reservoir host
d. Transport host
CORRECT CHOICE✔✔ C
DETAILED ELABORATION: Reservoir hosts harbor parasites that are also infective for
humans. Infections occur when humans encounter infected animals or infective forms related
to that parasite’s life cycle.
KEY: Introduction: parasite-host relationships | Cognitive level: recall