. The brain as an organ of mind. Brain; Thought and thinking; Brain. 74 THE NERVOUS SYSTEM OF MOLLUSKS. burrowing organ; to many it aids in the execution of short ; The bivalves possessing a foot, therefore, present three pairs of ganglia instead of two—the anterior or 'labial',. Fig. 23.—Nervous System of th3 Common Mussel. (After Owen.) I, Labial ganglia connected by a short commissure above or in front of the mouth ; b, b, branchial ganglia similarly connected, and also united by very long cords (d, d) with the labial ganglia; p, bilobed pedal ganglion sending branches to the mus
. The brain as an organ of mind. Brain; Thought and thinking; Brain. 74 THE NERVOUS SYSTEM OF MOLLUSKS. burrowing organ; to many it aids in the execution of short ; The bivalves possessing a foot, therefore, present three pairs of ganglia instead of two—the anterior or 'labial',. Fig. 23.—Nervous System of th3 Common Mussel. (After Owen.) I, Labial ganglia connected by a short commissure above or in front of the mouth ; b, b, branchial ganglia similarly connected, and also united by very long cords (d, d) with the labial ganglia; p, bilobed pedal ganglion sending branches to the muscular foot (r), and closely connected with the ' auditory saccules' (s); h, h', circum-pallial plexus; y, byssus. by which the animal attaches itself to external substances. the posterior or 'branchial', and the inferior or 'pedal'. It occasionally happens that the ganglia of the posterior or even of the inferior pair may become approximated and fused into Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bastian, H. Charlton. N. Y. , Appleton
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