Elementary Text-Book of Zoology
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In our eReader you can find the full English version of the book. Read Elementary Text-Book of Zoology Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elementary Text-Book of Zoology
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. ■ t. ^i. j ^ rr.
which there passes an ovarian duct. Two large paired yolk-glands lie laterally and their vitelline ducts I40 PL A T YHELMINTHES.
meet to form a median vitelline duct. This runs forward to meet the ovarian duct and from their junction there passes a median dorsal tube to the exterior, the so- called vagina. The junction is surrounded by a round shell-gland which secretes the shells of the eggs, and the united ducts lead towards the anterior end as a much-coiled oviduct. This o...pens to the exterior in the median ventral line between the two suckers.
Fig. 72. — View of Liver-Fluke [Distonium).
Showing the Reproductive Organs, (After Sow her.) Common Genital Aperture, Vas Deferens.
Left Testis.
Laurer's Duct.
Vitelline Duct.
The male organs consist of a pair of branched testes, one behind the other. The vasa deferentia from them DISTOMUM.
141 unite at the level of the posterior sucker to form a seminal vesicle. In front of the seminal vesicle lies the protrusible /««w along which there runs an ejaculatory duct from the former.
What to read after Elementary Text-Book of Zoology?
You can find similar books in the "Read Also" column, or choose other free books by Masterman, Arthur Thomas to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
. ■ t. ^i. j ^ rr.
which there passes an ovarian duct. Two large paired yolk-glands lie laterally and their vitelline ducts I40 PL A T YHELMINTHES.
meet to form a median vitelline duct. This runs forward to meet the ovarian duct and from their junction there passes a median dorsal tube to the exterior, the so- called vagina. The junction is surrounded by a round shell-gland which secretes the shells of the eggs, and the united ducts lead towards the anterior end as a much-coiled oviduct. This o...pens to the exterior in the median ventral line between the two suckers.
Fig. 72. — View of Liver-Fluke [Distonium).
Showing the Reproductive Organs, (After Sow her.) Common Genital Aperture, Vas Deferens.
Left Testis.
Laurer's Duct.
Vitelline Duct.
The male organs consist of a pair of branched testes, one behind the other. The vasa deferentia from them DISTOMUM.
141 unite at the level of the posterior sucker to form a seminal vesicle. In front of the seminal vesicle lies the protrusible /««w along which there runs an ejaculatory duct from the former.
What to read after Elementary Text-Book of Zoology?
You can find similar books in the "Read Also" column, or choose other free books by Masterman, Arthur Thomas to read onlineMoreLess
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