Details

Title: !!!!Inverts 3

Description: Phlyum Arthropoda

Total Flash Cards: 12

Created: 11/24/2009 18:40:50

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Cards in this set:

Term
body
 Definition
segmented, jointed, chitinous exoskeleton; no motile cilia
Term
segmentation
 Definition
metameric segmentation; tagmatization
Term
cuticle
 Definition
exoskeleton; secreted by epidermis; epicuticle(waxy, thin, impermeable);procuticle(chitin, proteins, CaCO3)
Term
cuticle function
 Definition
protective, sensory (setae, pits); supportive
Term
ecdysis
 Definition
molting; under hormonal control
Term
nervous system
 Definition
highly cephalized; brain & ventral nerve cord; pairs of ganglia; Unusual: more than one nerve cell; can inhibit muscles from contracting
Term
sensory organs
 Definition
mechano, chemo receptors=setae; proprioceptors; photoreceptors:simple eyes (ocelli); compound eyes (ommatidium); statocysts (balance)
Term
digestive tract
 Definition
mouth;foregut->midgut(gland diverticulum)->hindgut(packages, conserves h2o)->anus
Term
circulatory system
 Definition
open; vessels->homocoel->vessel; heart in pericardial sinus
Term
excretion
 Definition
arachnids and merostomata:coxal glands(collect waste from blood and get rid of waste-osmoreg);crustaceans:gills(rid of ammonia),diffusion over gills, antennal and maxillay glands(osmoreg);insects,arachnids,myriapods:malpighi tubules
Term
reproduction
 Definition
usually gonochoristic(exception:barnacles);many have species specific mating behavior
Term
development
 Definition
direct; indirect; mixed