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ENTO 208: INTERNAL ANATOMY
Mouth |
The anterior opening to the intestine.
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Salivary Glands |
Lie beneath the crop. Connected to the salivary duct which opens at the base of the hypopharynx.
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Pharynx |
Short funnel-shaped portion of the digestive tract back of the mouth.
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Esophagus |
Short tube leading from the pharynx to the crop.
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Crop |
Posterior end of the esophagus widens into the thin-walled crop.
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Gizzard (Proventriculus) |
Behind the crop.
Muscular walls. Lined with teeth or ridges.
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Ventriculus (Stomach) |
Relatively large simple tube.
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Gastric Caeca |
Blind-end tubes that open into the anterior part of the stomach
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Malpighian Tubes |
Hair-like tubes attatched at the junction of the stomach and the ileum.
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Anterior Intestine (Ileum) |
Anterior division of the intestine which extends from the stomach to the colon.
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Posterior Intestine (Colon) |
Short, narrow portion connecting the ileum to the rectum.`
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Rectum |
Posterior division of the intestine which collects undigested waste material before expeled from the body.
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Anus |
Posterior opening to the intestine
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Brain |
Large ganglion in the head which innervates the antennae and eyes, and coordinates the avtivites of the insects.
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Subesophageal Ganglion |
Small ganglion below and behind the brain, which innervates the mouthparts.
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Thoracic Ganglia |
Large ganglion located in each of the thoracic segments.
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Commissures |
Nerves which connect the ganglia.
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Ovaries |
Paired, cylindrical, tapering masses, composed of groups of tubes called ovarioles in which eggs are formed.
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Oviducts |
Tubes leading posteriorly from the ovaries to the vagina.
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Vagina |
Central duct through wich eggs pass before being deposited.
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Spermatheca |
Sperm receptacle. A pouch, opening dorsally into the vagina.
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Accessory Glands |
Tubes of a glandular nature which lie at the anterior end of the oviducts
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Testes |
Paired groups of sperm tubes which lie in the upper front region of the abdomen.
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Vasa Deferentia |
Ducts leading from the testes to the ejactulatory duct.
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Simenal Vesicles |
A group of tubes which open into the ejaculatory duct.
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Accessory Glands |
Glandular pouches (modified seminal vesicles) which open into the ejaculatory duct.
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Ejaculatory Duct |
Central exit tube of the genital system.
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