08InsectPhysII

08InsectPhysII - Announcements L a b Q u iz t o d a y O n e...

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1 Announcements Lab Quiz today One minute per station Postpone submission of first insect collection until April 2 Propose Pepperwood trip in first weekend of May Circulation- dorsal heart – In pericardial sinus – Muscular vessel enclosed by body wall and diaphragm – Valves prevent backflow – Pumps push blood from posterior towards head Circulation- ventral diaphragm – encloses perineural sinus – contracts and directs bloods blood laterally and backwards
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Ingestion, storage, grinding • Subdivisions – Pharynx – Esophagous – Crop for food storage – Proventriculus- grinding organ (gizzard) • opening to salivary glands Digestive System • Salivary glands • gut • Malpighian tubules – free ends distributed through hemocoel – Eliminates non-gaseous wastes – contents emptied into gut and eliminated through anus Midgut digestive enzymes secreted for absorption peritrophic membrane – non-living area separates food from epithelium sieves food between inner and outer gut
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This note was uploaded on 03/02/2012 for the course BIOLOGY 323 taught by Professor Rank during the Spring '08 term at Sonoma.

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08InsectPhysII - Announcements L a b Q u iz t o d a y O n e...

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