Discovery reports (1940) Discovery reports discoveryreports19inst Year: 1940 GIGANTOCYPRIS MULLERI Fig. 12. Same reconstruction as in Fig. 11 but from the sagittal plane showing aorta and nerve ring accurately bisected and complete visceral nervous system, aortic ganglion; aortic tendon; ap. apodeme supporting nauplius eye muscle; connexion between visceral system (labral loop) and brain; frontal apodeme; frontal organ; labral ganglion; stomach ganglion; La. labral artery; aortic muscle; nauplius eye muscle; pericardial dilat
Discovery reports (1940) Discovery reports discoveryreports19inst Year: 1940 GIGANTOCYPRIS MULLERI Fig. 12. Same reconstruction as in Fig. 11 but from the sagittal plane showing aorta and nerve ring accurately bisected and complete visceral nervous system, aortic ganglion; aortic tendon; ap. apodeme supporting nauplius eye muscle; connexion between visceral system (labral loop) and brain; frontal apodeme; frontal organ; labral ganglion; stomach ganglion; La. labral artery; aortic muscle; nauplius eye muscle; pericardial dilator; nerve to frontal organ; nerve to median component of nauplius eye; v. valve in supraneural blood vessel. In the posterior wall of the aorta lies the pericardial dilator muscle. This extends from the pericardial floor down to a tendinous plate in the aortic wall just above the level where the aorta bifurcates. This plate, the aortic tendon, marks the point of attachment of various muscles and is itself connected to the ectoderm through the frontal apodeme (Fig. 12). The muscles are the anterior and posterior aortic-oesophageal muscles and the aortic endosternite muscle all running ventrally, while the aortic
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