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 Insect Morphology and SystematicsInsect Morphology and Systematics 16248680811470158, Chin sevish Abdurauf Fitrat - 11.03.2016 16-14-20, 5 sinf 1-Mavzu Biologiya hayot haqidagi fan, 1-mavzu. Hasharotlar ekologiyasi fani rivojlanish tarixi particles.
(ii)
Gastric caecae:
(Enteric caecae or Hepatic caecae)
Finger like outgrowths found in anterior or posterior ends of midgut. This structure increases the
functional area of midgut and shelter symbiotic bacteria in some insects.
(iii)
Pyloric valve:
(Proctodeal valve)
Midgut opens into hindgut through pyloric valve, which regulate food flow. In certain immature
stages of insects midgut is not connected to hindgut till pupation. e.g. Honey bee grub.
(iv)
Filter chamber:
Filter chamber is a complex organ in which two ends of ventriculus and the begining of hind gut
are enclosed in a sac. This is useful to short circuit excess water found in liquid food in
homopteran insects. This process avoids dilution of digestive enzymes and concentrates food for
efficient digestion. Also helps in osmoregulation by preventing dilution of haemolymph.
Insect Morphology and Systematics
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