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Vet. Parasitology
Nematodes
| Term | Definition |
|---|---|
| Cervical Alae | Lateral expansion of the cuticle in the anterior end of nematodes |
| Copulatory Bursa | Flattened, lateral expansion of a nematode's cuticle in the posterior end of certain males; used to hold on to or grasp the female during mating |
| Bursal Rays | Fingerlike projections that make up the copulatory bursa of a male nematode |
| Spicules | Male nematode's intermittent organs ("penis") associated with the copulatory bursa |
| Hypodermis | Thin layer beneath the cuticle that secretes the cuticle layer of the nematode |
| Somatic Muscular Layer | The layer of muscle below the hypodermic that is used by nematodes to move |
| Body Cavity | Hollow area of the body that contains the major organs of an organism |
| Pseudocoelom | Cavity between the middle layer and inner layer of the three body tissue layer of the nematode |
| Pseudocoelomic Membrane | The tissue that surrounds and lines the pseudocoelom |
| Papillae | Fingerlike or bump like projections on the cuticle of a nematode; may replace the lips in some nematodes |
| Leaf Crown | The collection of papillae of nematodes |
| Rectum | Opening of the intestine of the female nematode to the outside |
| Cloaca | Opening of the intestine of the male nematode to the outside |
| Dioecious | Having separate sees, both male and female |
| Tubular Testes | Male nematode's reproductive organs |
| Vas Deferens | Male nematode's reporcutve organ connecting the tubular testes to the cloaca |
| Spicule Pouch | Pocket that contains the male reproductive organs used to open the female nematode's vulva |
| Tubular Ovaries | Female nematode's reproductive organs |
| Oviduct | Female nematode reproductive organ that connects the tubular ovaries to the uterus |
| Seminal Receptacle | A female nematode's reproductive organ used to store sperm |
| What are the different types of eggs female nematodes can produce? | Ascaroid, trichostrongyle or strongyle, spiruroid, and trichinelloid or trichuroid |
| Oviparous | Type of nematode egg that contains either a single cell or a morula, a grape like cluster of cells |
| Ovoviviparous | Type of nematode egg that contains a first-stage larva |
| Larviparous | Type of female nematode that retains her eggs within the uterus and produces live first-stage larvae |
| Molt | Shedding of the outside cuticle |
| Infective Third-Stage Larva | Stage in the life cycle that is able to infect the definitive host |
| Direct Life Cycle | Life cycle that does not involve an intermediate host |
| Indirect Life Cycle | Life cycle of a parasite that requires an intermediate host |
| Prepatent Period | Time from the point of infection by a nematode until a specific diagnostic stage can be recovered |
| Vermifuge | Dewormer that paralyzes (but does not kill) the adult parasite so it passes in the feces |
| Vermicide | Dewormer that kills the parasite so that it can be broken down by the host's body |
| Parthenogenesis | Modified form of sexual reproduction characterized by the development of offspring by a female nematode from eggs that have not been fertilized by a male nematode |
| Microfilaria | Immature stage of filarial parasites |
| Adulticides | Drugs that kill the adult stages of the parasite |
| Microfilaricide | Dewormer that kills the immature filarial worm |
| Facultative Parasite | Organism that is usually free living (nonparasitic) in nature and develops a parasitic existence in certain hosts |
| Rhabditiform Esophagus | Type of nematode esophagus that has a corpus, isthmus, and posterior bulb |
| Strongyles | Nematodes that parasitize the large intestine of horses and are typically divided into two types, large strongyles and small strongyles |
Created by:
KaleighMichelle
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