What is heteroxenous?
a parasite that requires more than one host to complete it's life cycle
How did trypanosomids evolve into heteroxenous?
original hosts were bloodsucking insects, so constant leakage into other potential hosts, eventual
List the parasites caused by eating undercooked fish.
List parasites that can be contracted by improper washi
What type of mosquito is malaria in?
What genus is malaria in?
What are some general characteristics of Malaria?
largest cause of death via parasite
- a pigment found in urine of infected
-can clog up the liver and
What are some general characteristics of the phylum
acoelomate, bilateral, triploblastic, no body cavity, bad sensory and organ systems
What are some characteristics of the class Trematoda?
all are parasitic, have sexual phase, asexual ph
What is the distribution of Necator Americanus?
N. & S. America, Africa, India
What is the distribution of Ancylostoma duodenale?
Primarily Far East
How was Necator americanus introduced to the Americas?
by the slaves
What is an alternate name/description
What is the distribution of Mansonella ozzardi?
central and South America
What is the vector for Mansonella ozzardi?
Black Fly or midge vector
Where does Mansonella ozzardi live?
in the body cavity(though it can cause elephantiasis if found in lymph nodes
What is the scientific name of the fly that transmits
What species of Leishmania can produce a sore on the
ear that lasts for 40 years?
What Leishmania can lie dormant for 30 years?
- Babesia bigemina (apicomplexa)
found in red blood cells
- causes Texas cattle fever, anemia, splenomegaly
- transmitted by Boophilus tick
- diagnosis is blood smear
Eimeria steidae infections in rabbits produce what
What is responsible for cardiac Plateau?
slow Na & Ca channels.
Conduction velocities of : Atria; purkinje, Ventricles
Atria = 03-0.5m/sec;
Purkinjse = 4m/sec
Ventricle = 0.3-0.5m/sec
HOw long is the plateau in Cardiac A.P?
How long is the refrac