Retinal afferents and efferents of an infrared sensitive snake, Crotalus viridis
The retinal afferents and efferents were examined in Crotalus viridis. Retinofugal fibers were traced by injecting horseradish peroxidase (HRP) or tritiated leucine into the eye, or by removing the eye and staining degenerating axons with silver methods. Terminations were seen contralaterally in the suprachiasmatic nucleus, the dorsal and ventral lateral geniculate nuclei (extensive), the pretectal nuclei, including the nucleus posterodorsalis (a very heavy input), the nucleus lentiformis mesencephali, nucleus geniculatus pretectalis, and nucleus pretectalis, the superficial layers of the optic tectum, including the stratum zonale, the stratum opticum, the stratum griseum et fibrosum centrale and the upper portion of stratum griseum centrale, and the basal optic nucleus. Ipsilateral input reaches the intermediate portion of the dorsal lateral geniculate nucleus, a small portion of the pretectal nucleus and nucleus posterodorsalis, and the basal optic nucleus (very minimally). Retinopedal fibers were traced with the HRP method. The cell bodies lie in the ventral thalamus within the nucleus of the ventral supraoptic decussation. These neurons project primarily to the contralateral retina, but some more rostrally located neurons project to the ipsilateral retina.
- Research Organization:
- Medical Sciences Program, Indiana University School of Medicine, Bloomington
- OSTI ID:
- 5672958
- Journal Information:
- J. Morphol.; (United States), Journal Name: J. Morphol.; (United States) Vol. 170:1; ISSN JOMOA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Autoradiographic study of the efferent connections of the entorhinal cortex in the rat
Common fur and mystacial vibrissae parallel sensory pathways: /sup 14/C 2-deoxyglucose and WGA-HRP studies in the rat
Related Subjects
560153 -- Radiation Effects on Animals-- Invertebrates-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANATOMY
ANIMAL CELLS
ANIMALS
BODY
BODY AREAS
CARBOXYLIC ACIDS
ELECTROMAGNETIC RADIATION
ENZYMES
EYES
FACE
HEAD
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFRARED RADIATION
LABELLED COMPOUNDS
NERVE CELLS
NERVES
NERVOUS SYSTEM
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANS
OXIDOREDUCTASES
PEROXIDASES
PORPHYRINS
RADIATIONS
RADIOSENSITIVITY EFFECTS
REPTILES
RETINA
SENSE ORGANS
SNAKES
SOMATIC CELLS
TRITIUM COMPOUNDS
VERTEBRATES