File:Origin of Vertebrates Fig 071.jpg

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English: Fig. 71.—Diagram constructed from a series of Transverse Sections through a Branchial Segment of Ammocœtes, showing the arrangement and relative positions of the Cartilage, Muscles, Nerves, and Blood-Vessels.


Nerves coloured red are the motor nerves to the branchial muscles. Nerves coloured blue are the internal sensory nerves to the diaphragms and the external sensory nerves to the sense-organs of the lateral line system. Br. cart., branchial cartilage; M. con. str., striated constrictor muscles; M. con. tub., tubular constrictor muscles; M. add., adductor muscle; D.A., dorsal aorta; V.A., ventral aorta; S., sense-organs on diaphragm; n. Lat., lateral line nerve; X., epibranchial ganglia of vagus; R. br. prof. VII., ramus branchialis profundus of facial; J.v., jugular vein; Ep. pit., epithelial pit.


(All references in this work to Ammocœtes or Petromyzon appear to refer to the species now called Lampetra planeri.)
Date
Source The Origin of Vertebrates. https://archive.org/details/ost-biology-the_origin_of_vertebrates
Author Walter Holbrook Gaskell.


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current16:48, 9 November 2013Thumbnail for version as of 16:48, 9 November 20131,458 × 1,355 (417 KB)Keith Edkins (talk | contribs)== {{int:filedesc}} == {{Information |Description={{En|Fig. 71.—Diagram constructed from a series of Transverse Sections through a Branchial Segment of Ammocœtes, showing the arrangement and relative positions of the Cartilage, Muscles, Nerves, and ...

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