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Related Flashcards
Cards In This Set
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Arhropoda II covers Sunphylum _____, Class _____ which are part of the uniramous split among Arthopoda
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Hexapoda, Hexapoda
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Describe the characteristics of uniramians
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appendages are unbranched (so just one branch)
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1 pair of antennae
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mandibles (“jaws”) present
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2 pairs of maxillae (usually)
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body is covered with a (waxy) cuticular exoskeleton
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Describe the circulatory system of uniramians
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circulatory system consisting of a hemocoel filled
with hemolymph
(blood); the hemoceol
is a remnant of the blastocoel;
this is the main body-cavity in arthropods – the true coelom
is reduced
to small areas housing gonads & sometimes excretory organs
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Describe the circulatory system of Insects
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open circulatory system in
arthropods: blood
empties into sinuses to bathe organs and tissues and returns directly from the hemocoel
to the dorsal contractile heart through ostia
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 Identify the mandibles, labium, maxillae |
 a, antennae; c, compound eye; lb, labium; lr, labrum; md, mandibles; mx, maxillae. |
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Insects exchange gases through a ____ system (consisting of thin-walled tubes) which has _____ tubes open to the outside by (valved) _____; However, if juveniles are aquatic, they may have gills
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Tracheal; tracheal; spiracles
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Insect digestive systems are...
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Complete with regional specialization and an inner cuticle lining (gets molted as well)
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In which part of the insect gut does absorption of nutrients take place
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Midgut
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Insects excrete through _____ tubules which are at the end of the _____ and allow insects to conserve water and withstand terrestrial environments
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Malpighian; hindgut
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Malpighian tubules work by..
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 Ion pumping moves Na+ in, water and NH3 follow asmotically; ion pumping recovers Na+, water follows osmotically to exit |
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Water is pumped through in what order
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Malpighian tubules -> midgut -> hidgut -> rectum -> anus
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Reproduction in insects is _____ with _____ fertilization and some exhibit _______ __________
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Diecious; internal; sexual cannibalism
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To fly some insects have both _____ and ___ flight muscles; ____ muscles pull the wings down while _______ muscles pull the body wall down and wings get uplifted by default
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Direct and indirect; direct; indirect
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Some insects have only _____ flight muscles; the wings are moved by alternating the shape of the ______ ___ ___
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Indirect; thoracic body wall
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Centipedes fall under what Subphylum and Class
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Subphylum Myriapoda, Class Chilopoda
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