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Published byEthel O’Brien’ Modified over 8 years ago
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ANUSANUS
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THIS PICTURE DISPLAYS THE TYPHLOSOLE IN THE OPENED INTESTINE AS WELL AS THE VENTRAL NERVE CORD.
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CLOSE-UP OF THE OVARY AND OVARIAN SAC SEPTA
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DORSAL VESSEL INTESTINAL WALL TYPHLOSOLE
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THE INTESTINE, DORSAL BLOOD VESSEL AND NEPHRIDIA
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A CLOSE-UP PICTURE OF THE VENTRAL NERVE CORD AND THE SUBINTESTINAL VESSEL
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THE INTESTINE HAS BEEN REMOVED TO SHOW THE NERVE CORD AND SUBINTESTINAL BLOOD VESSEL. THE NEPRIDIA ARE CLEARLY SEEN BETWEEN THE SEPTA ON THE BODY WALL
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CROSS-SECTIONAL CUT SHOWING THE INTESTINE AND THE TYPHLOSOLE
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NEPHRIDIA LONGITUDINAL MUSCLE SETA CUTICLE EPIDERMIS CIRCULAR MUSCLE
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VENTRAL NERVE CORD
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COELOM DORSAL BLOOD VESSEL TYPHLOSOLE
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NEPHRIDIA SETAE CIRCULAR MUSCLE LONGITUDINAL MUSCLE DORSAL BLOOD VESSEL TYPHLOSOLE
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GIZZARD CROP DORSAL BLOOD VESSEL INTESTINE HEART
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This picture showes the genital opening on the side of the earthworm. Note the genital groove runs along the body wall from the opening
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A different view of the structures shown in the previous slide
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The genital groove on the exterior body wall of an earthworm.
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The posterior end of the earthworm. The anus would be located at the apex.
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The anterior end of the earthworm showing the prostomium extending over the mouth. The body segmention should be noted
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This picture showes the brain and associated nerve cords. The pharynx and been opened up and the upper half is reflected bacwards
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A close up picture of the nephridia in the body wall of the Earthworm laying between the septa. Note the blood vessels supplying the nephridia and the the body wall.
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Where would the ovary be located? In this picture the ovary is visible.
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The brain located on top of the pharynx and nerve cords extending to the prostomim
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intestine gizard crop Seminal vesicle nephridia
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Two earthrworms mating
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Ventral nerve cord and subintestinal blood vessel located beneath the intestine.
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clitellum Ventral nerve cord gizzard crop Dorsal blood vessel
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crop gizzard intestine
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gizzard crop seminal esophagous d. b. vessel hearts pharynx brain vesicale
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This picture was of a living worm. Note the coloration and the blood in the hearts.
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Find the Following: Septa Seminal Vesicles Dorsal Vessel Intestine Crop Gizzard Find the Following: Septa Seminal Receptacle Heart Ventral nerve Nephridia
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Observe the ventral nerve cord beneath the removed intestine.
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pharynx HEARTHEART Brain And Nerves
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hearts pharynx crop GIZZARDGIZZARD
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dorsal b. vessel seminal vesicles seminal receptacle
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Intestine gizzard crop hearts pharynx
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PHARYNX BRAIN
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MOUTH PROSTOMIUM PHARYNX FIND THE SEMINAL RECEPTACLE AND TESTIS
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OVARYOVARY OVARIAN SAC
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CROP SEMINAL VESICLE SPERM DUCT
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TESTIS
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GIZZARD CROP VENTRAL NERVE CORD NEPHREDIA
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CROP SEMINAL VESICLE DORSAL VESSEL NOTE THE SEPTA THAT DIVIDES EACH BODY SEGMENT INTO A SEPARATE COMPARTMENT. ALSO OBSERVE THE NEPHRIDIA LAYING ALONG THE BODY WALL IN EACH SEGMENT.
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Seminal vesicle Seminal vesicle Seminal vesicle esophagous HEARTS
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NOTE THE RICH SUPPLY OF BLOOD VESSELS IN THE SKIN OF THE WORM. THIS IS NECESSARY FOR THE EXCHANGE OF GASES FOR RESPIRATION
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Seminal vesicle CROP HEART OVARY OVARIAN SAC
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