Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
Infective Stage |
Maybe eggs containing larvae, free-living larvae, or larvae in an intermediate or transporting host |
|
|
Complete metamorphosis |
Four stages: egg - larva - pupa - adult |
|
|
Dorsoventrally flattened |
Flattened back to belly |
|
|
Head |
Cephal/o |
|
|
Thorax |
Neck |
|
|
Cephalothorax |
Spiders have a neck and head that is one piece |
|
|
Abdomen |
Body |
|
|
Direct life cycle |
Life cycle follows a standard pattern with no intermediate host needed for maturation example: roundworms |
|
|
Indirect lifecycle |
One or more intermediate host is required to reach maturity example: tape worm |
|
|
Reservoir |
An animal that is infected by parasite and serves as a source of infection for other species |
|
|
Nymph |
A developmental young adult stage or arthropods that resemble the adult of the species |
|
|
Larva |
And immature life cycle stage that is visibly different than the adult stage. I must change in shape and size to become an adult. |
|
|
Definitive host |
An organism in which a parasite passes its sexually mature adult stage |
|
|
Intermediate host |
An organism in which a parasite passes its non-sexual or larval stage |
|
|
Scolex |
- head of tapeworm - has suckers or hook like parts that in the adult stage serve as organs of attachment to its host |
|
|
Exoparasite |
Parasite that affects the external body parts. Example: lice, mites, ticks |
|
|
Lifecycle |
The series of changes in the life of an organism including reproduction |
|
|
Incomplete Metamorphosis |
Three stages: egg - nymph - adult |
|
|
Endoparasite |
A parasite that affect the internal parts of the body. Example: roundworms, tapeworms |
|
|
Specificity |
A characteristic of a parasite that only allows it to infect a specific host |
|
|
Exoskeleton |
A hard outer layer that covers, supports and protects the body. Made of chitin. |
|
|
Pupae |
The second stage of the development of an insect where they are inactive in a cocoon |
|
|
Egg |
Protective shell that carries a baby, also called an ova |
|
|
Adult |
A sexually, structurally mature organism |
|
|
Zoonosis/zoonotic |
Parasites able to transmit to humans as well |
|
|
Clinical signs |
Abnormalities and structure and function of a body system or systems observed in a patient by a veterinarian. Observed as mild, moderate, severe or peracute, acute, chronic |
|
|
Insects |
Flies, mosquitoes etc Adults - segmented body with head, thorax and abdomen - 2 jointed appendages - two eyes, two antennae - may or may not have wings - sexes separate - exoskeleton consisting of chitinous cuticle - immature forms maybe nymph which resemble adults this is called simple metamorphosis - wormlike larva which includes pupa, during which transformation to the adult occurs termed complex metamorphosis whatever that means |
|
|
Arachnids |
Mites, ticks, spiders Adults - body is divided into two parts: cephalothorax and abdomen - 8 jointed legs - separate sexes - I may or may not be present, no antenna, wingless - larva: similar to adults but six-legged and smaller - nymphs: similar to adults with eight legs but smaller and lack mature reproductive structures - simple metamorphosis: no pupa |
|
|
Bloodborne |
Transferred through blood |
