The anatomy of the common squid, Loligo pealii, Lesueur . - where it contains the anus,pairs of gills, of nephridial openings, and of sexual openings. These structures. ~.-^ .1/0 - / Ft Fig. 1. are called collectively the pallial complex. The visceral dome is covered by a saucer-shaped or conical shell which extends downward over the mantle and mantle chamber. The intestine is a straight tul^e which is connected with a large digestive gland. The nervous system consists of a cerebral ganglion in the head, a pedal ganglion in the foot. joined to the cerebral ganglion b\ a pair of ganglionat
The anatomy of the common squid, Loligo pealii, Lesueur . - where it contains the anus,pairs of gills, of nephridial openings, and of sexual openings. These structures. ~.-^ .1/0 - / Ft Fig. 1. are called collectively the pallial complex. The visceral dome is covered by a saucer-shaped or conical shell which extends downward over the mantle and mantle chamber. The intestine is a straight tul^e which is connected with a large digestive gland. The nervous system consists of a cerebral ganglion in the head, a pedal ganglion in the foot. joined to the cerebral ganglion b\ a pair of ganglionated nerve cords, and a visceral ganglion in the body also united to the cerebral ganglion by a pair of nerve cords. The general body-formand arrangement of organsof the unspecialized mollusc are for a short time partially realized in embryonicCephalopoda. The egg of the Cephalopoda contains a large amount of yolkand undergoes a discoidal cleavage, hence the form of the embryo is greatlymodified hom its primitive condition. The dorsal surface of the embryo is
Size: 2398px × 1042px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidanatomyofcom, bookyear1909
