. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. PITHECUS RHESUS, MACACUS RHESUS 381 The central gray matter (Cen) surrounds the much reduced ven- tricular space which is here approaching the caudal orifice of the Sylvian aqueduct. The major portion of the tegmentum is occupied by the reticular. FIG. 178. MACACUS. LEVEL THROUGH THE AUDDLE OF THE PONS VAROLIL CEN, Central Gray Matter; ctt, Central Tegmental Tract; GOW, Ventral Spinocerebellar Tract; lf. Lateral Fillet; mcp. Middle Cerebellar Peduncle; mf, M
. The brain from ape to man; a contribution to the study of the evolution and development of the human brain. Brain; Evolution; Pongidae. PITHECUS RHESUS, MACACUS RHESUS 381 The central gray matter (Cen) surrounds the much reduced ven- tricular space which is here approaching the caudal orifice of the Sylvian aqueduct. The major portion of the tegmentum is occupied by the reticular. FIG. 178. MACACUS. LEVEL THROUGH THE AUDDLE OF THE PONS VAROLIL CEN, Central Gray Matter; ctt, Central Tegmental Tract; GOW, Ventral Spinocerebellar Tract; lf. Lateral Fillet; mcp. Middle Cerebellar Peduncle; mf, Mesial Fillet; nbe, Nucleus of Bechterew; nr, Nucleus of Rolando; N5, Trigeminal Nerve; N7, Facial Nerve; pd, Predorsal Bundle; pl, Posterior Longitudinal Fascicu- lus; PN, Pontile Nuclei; pns. Pons; py. Pyramid; ref. Reticular Formation; rst. Rubrospinal Tract; scp, Superior Cerebellar Peduncle; spt. Spinocerebellar Tract; trd. Descending Trigeminal Tract; tlr, Tractus Uncinatus of Russel (Hook Bundle). (Accession No. 149. Section 280. Actual Size 21X10 nim.| formation (Ret) ni which are many transverse decussating iibers, some of which at least appear to take origin in the substantia gelatinosa trigemini (NR), passing inward, it may be, as a secondary pathway for the con- duction of impressions from the face and head. These fibers appear to decus- sate, as is the case of all sensory axons, in the median raphe. LEVEL OF THE EMERGENCE OF THE FOURTH OR TROCHLEAR NERVE (fIG. I 79) At this level, the neuraxis passes through its isthmial portion at or near the junction between the hindbrain and the midbrain. In its roofplate, which. 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 Tilney, Frederick, 1875-1938; Riley, Henry Alsop, 1887-. New York, P. B. Hoeber, inc.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbrain, booksubjectevo
