. Embryology. Embryology; Embryology; genealogy. PROSENCEPHALON RHOMBENCEPHALON. OPTIC VESICLE MESENCEPHALON HEART VITELLINE VEIN NEURAL TUBE PRIMITIVE STREAK Fig. 129. An embryo of 14 pairs of somites about 34 hours of incubation age and about mm. in length. The nervous system has formed three primary divisions of the brain: prosencephalon, mesencephalon, and rhombencephalon. Paired optic vesicles grow out laterally from the prosencephalon. The foregut is outlined by two folds on either side of brain. The heart is well formed and beating. Paired vitelline veins can be seen entering heart.
. Embryology. Embryology; Embryology; genealogy. PROSENCEPHALON RHOMBENCEPHALON. OPTIC VESICLE MESENCEPHALON HEART VITELLINE VEIN NEURAL TUBE PRIMITIVE STREAK Fig. 129. An embryo of 14 pairs of somites about 34 hours of incubation age and about mm. in length. The nervous system has formed three primary divisions of the brain: prosencephalon, mesencephalon, and rhombencephalon. Paired optic vesicles grow out laterally from the prosencephalon. The foregut is outlined by two folds on either side of brain. The heart is well formed and beating. Paired vitelline veins can be seen entering heart. The anterior intestinal portal is located above the union of the two vitelline veins. The neural tube is closed throughout most of its length. The primitive streak is much reduced in size. The area vasculosa has invaded the area pellucida, and blood vessels are uniting (about two-thirds of the way down from the head) to form the vitelline arteries. (Courtesy Mr. Lester A. Barrer, Sloan-Kettering Institute.) PROSENCEPHALON SUBCEPHALIC POCKET. 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 Barth, Lester G. (Lester George), 1905-1979. New York, Dryden Press
Size: 945px × 2645px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1900, booksubjectembryology, booksubjectgenealogy
