INSECT ANATOMY AND PHYSIOLOGY

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INSECT ANATOMY AND PHYSIOLOGY
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INSECT STRUCTURE AND FUNCTION
GENERALIZED INTERNAL ANATOMY
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INSECT INTERNAL ANATOMY
Foregut, Midgut, Hindgut
Brain and Associated Ganglia
Malpighian Tubules
Heart and Dorsal Aorta
Ventral Nerve Chord
Spiracles and Trachea
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INSECT DIGESTIVE SYSTEM
INSECTS HAVE A COMPLETE DIGESTIVE SYSTEM
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INSECT DIGESTIVE SYSTEM
Tube Within A Tube Design
INSECT ALIMENTARY CANAL IN CROSS SECTION
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INSECT DIGESTIVE SYSTEM
THE INSECT ALIMENTARY CANAL IS DIVIDED INTO THREE
(3) FUNCTIONAL REGIONS
FOREGUT (STOMODEUM)
MIDGUT (MESENTERON)
HINDGUT (PROCTODEUM)
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INSECT DIGESTIVE SYSTEM
THE FOREGUT AND HINDGUT ARE OF ECTODERMAL ORIGIN
AND LINED WITH A THIN LAYER OF CUTICLE (THE
INTIMA)
FOREGUT (ECTODERM)
MIDGUT (ENDODERM)
HINDGUT (ECTODERM)
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INSECT DIGESTIVE SYSTEM
THE MIDGUT IS OF ENDODERMAL ORIGIN AND LACKS A
PROTECTIVE LAYER OF CUTICLE
MIDGUT (ENDODERM) EPITHELIAL CELLS SECRETE A
PROTECTIVE BARRIER
THE PERITROPHIC MEMBRANE
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LOCATION AND MAJOR STRUCTURES OF THE FOREGUT,
MIDGUT, HINDGUT
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INSECT DIGESTIVE SYSTEM
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INSECT DIGESTIVE SYSTEM
COMPLEX MOUTHPARTS PROVIDE INITIAL FOOD
MANIPULATION AND PROCESSING
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INSECT DIGESTIVE SYSTEM
SALIVARY GLANDS
SALIVARIUM
SALIVARY DUCT
MOISTEN AND LUBRICATE MOUTHPARTS, DISSOLVE FOOD,
INITIATE DIGESTION
SALIVARY GLAND
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INSECT DIGESTIVE SYSTEM
SALIVARY GLANDS
Silk Moth (Bombyx mori)
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INSECT DIGESTIVE SYSTEM
THE HYPOPHARYNX IS A TONGUE-LIKE STRUCTURE WHICH
AIDS IN THE INITIAL MANIPULATION AND MIXING OF
FOOD.
HYPOPHARYNX
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INSECT DIGESTIVE SYSTEM
CIBARIAL MUSCLES CIBARIAL PUMP
AN INSECTS MOUTH IS LOCATED AT THE BASE OF THE
MOUTHPARTS AND SERVES AS A MUSCULAR VALVE FOR
FOOD INGESTION
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INSECT DIGESTIVE SYSTEM
CROP
PHARYNX
PROVENTRICULUS
ESOPHAGUS
CARDIAC VALVE
STOMODEUM (FOREGUT)
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INSECT DIGESTIVE SYSTEM
Digestion and Nutrient Absorption
GASTRIC CAECAE
VENTRICULUS
PYLORIC SPHINCTER
PERITROPHIC MEMBRANE
MESENTERON (MIDGUT)
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INSECT DIGESTIVE SYSTEM
MIDGUT GASTRIC CAECAE PROVIDE SITES FOR SYMBIOTIC
BACTERIA, PROTOZANS, AND OTHER ORGANISMS
GASTRIC CAECAE
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INSECT DIGESTIVE SYSTEM
MALPIGHIAN TUBULES
COLON
WATER RETENTION and WASTE ELIMINATION
RECTAL PADS
ILEUM
PROCTODAEUM (HINDGUT)
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INSECT DIGESTIVE SYSTEM
INSECT FECAL MATERIAL IS CALLED FRASS
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INSECT DIGESTIVE SYSTEM
THE INSECT ALIMENTARY CANAL HAS PRODUCED A
DIVERSITY OF CONFIGURATIONS TO FACILITATE
SPECIALIZED FEEDING AND DIGESTION REQUIREMENTS
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INSECT DIGESTIVE SYSTEM
HINDGUT SYMBIONTS
TERMITE WORKER (ISOPTERA)
TERMITE HINDGUT
SPIROCHAETE
FLAGELLATE PROTOZOAN
SYMBIOTIC BACTERIA, PROTOZANS, AND OTHER
MICRORGANISMS ASSIST IN DIGESTION AND CRITICAL
NUTRIENT PRODUCTION
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INSECT DIGESTIVE SYSTEM
INSECT ALIMENTARY CANAL AND DISEASE TRANSMISSION
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INSECT EXCRETORY SYSTEM
MALPHIGIAN TUBULES
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INSECT EXCRETORY SYSTEM
LONG, SLENDER HINDGUT FILAMENTS WHICH FILTER
WASTE PRODUCTS AND TOXINS FROM THE HAEMOLYMPH
MALPHIGIAN TUBULES
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INSECT EXCRETORY SYSTEM
MALPHIGIAN TUBULES