Nematodes
Terms
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- Nematodes are elongate cylindrical worms with a
- body wall, digestive system, excretory system, nervous system, and reproductive system
- anterior end may contain
- hooks, teeth, lips, and plates used for abrasion, attachment and sensory detection
- outer body wall has
- hylaline, noncellular cuticle, a subcuticular epithelium and a layer of muscle cells
- subcuticular layer
- contains somatic muscles, nerves, and excretory muscles
- during its growth phase, undergoes _____
- molting
- Alimentary tract is
- an elongated tube consisting of an oral cavity, esophagus, midgut, hindgut and anus
- Feed
- by sucking host blood, ingesting lysed tissues, feeding on intestinal contents and by ingestion of other host body fluids
- Metabolic processes are
- aerobic or anaerobic
- Excretory system is
- 2 later canals that transverse the worms body
- Do not have a _____ but the body contains hemoglobulin, glucose, proteins, and salts that function as blood
- circulatory system
- Nervous system consists of
- an anterior nerve ring of connected ganglia surrounding the esophagus with nerve trunks radiating anteriorly and posteriorly
- Sensory organs in the __,__,__,and __ regions allow the worms to react to drought, heat, cold and chemical stimuli
- labial, cervical, andal and genital regions
- Nematodes are hermaphordites or dioecious?
- Dioecious. male and female found on diff org.
- Male reproductive organs consist of
- testis, vas deferens, seminal vesicle, ejaculatory duct, and spicules contained in copulatory bursa
- Female reproductive organs include
- ovary, oviduct, seminal receptacle, uterus and vagina.