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Current IssueEditorial BoardOnline First ArticlesArchive

volume 47 issue 1 (february 2013) : 49-53

HISTOGENESIS OF MESENCEPHALIC TEGMENTUM IN GOAT FOETUSES

K
K.M. Lucy*
K
K.R. Harshan
J
J.J. Chungath
N
N. Ashok
1Department of Veterinary Anatomy, College of Veterinary and Animal Sciences, Mannuthy-680 651, India

  • Submitted|

  • First Online |

  • doi

Cite article:- Lucy* K.M., Harshan K.R., Chungath J.J., Ashok N. (2025). HISTOGENESIS OF MESENCEPHALIC TEGMENTUM IN GOAT FOETUSES. Indian Journal of Animal Research. 47(1): 49-53. doi: .

ABSTRACT

Prenatal histogenesis of the mesencephalic tegmentum was studied using 46 goat foetuses ranging from 2.5 cm CRL (40 days of gestation) to 41.5 cm CRL (full term).  Standard procedures were adopted for histoarchitectural studies.  Neuroepithelial cells occupying the mesencephalic tegmentum of foetal goat brain differentiated during the seventh week of gestation. In the basal plate region, neuroblasts aggregated to form nuclei during the same age.  Tegmentum contained network of fibres and cells representing the reticular formation.  The development of mesencephalon was dependent on the differentiation of other parts of brain.  During third month, mesencephalic nucleus of trigeminal nerve, nuclei of oculomotor and trochlear nerves, tegmental nuclei, red nuclei and the substantia nigra were developed.  Nissl granules started appearing in neurons of the midbrain tegmentum by the middle of fourth month.  Ependyma lining the aqueduct was adult-like during fifth month. Myelination also began at this stage.  All the nuclei constituting midbrain architecture were well developed by term. Cells of the red nucleus were one among the largest neurons that could be seen in the entire brain.  The rubrospinal tract arising from the red nucleus is a major pathway of the extrapyramidal system and is of particular importance in domestic animals in postural control and locomotion.

REFERENCES

  1. Arey, L.B. (1957). Developmental Anatomy. 6th Ed. W.B.Saunders Company, Philadelphia.
  2. Dellmann, H.D. and Mc Clure, R.G. (1975). In Sisson and Grossman’s the Anatomyof the Domestic Animals. 5th Ed. (Ed. Getty, R.). W.B. Saunders Company, Philadelphia. pp.1065-1080. 
  3. Dyce, K.M., Sack, W.O. and Wensing, C.J.G. (1996). Textbook of Veterinary Anatomy. 2nd Ed. W.B. Saunders Company, Philadelphia, p. 856.
  4. Herrera, M., Campo, F.S.D., Ruiz, A. and Agreda, V.M. (1988). Neuronal relationships between the dorsal periaqueductal nucleus and the inferior colliculus (Nucleus commissuralis) in the cat. A Golgi study. J. Anatomy. 158: 137-145.
  5. Jenkins, T.W. (1978). Functional Mammalian Neuroanatomy. 2nd Ed. Lea and Febiger, Philadelphia, p.480.
  6. King, A.S. (1987). Physiological and Clinical Anatomy of the Domestic Mammals.Oxford University Press, New York, , p.325.
  7. Klekamp, J., Reidel, A., Harper, C. and Kretschmann, H. J. (1987). A quantitative study of Australian Aboriginal and Caucasian brains. J. Anatomy. 150: 191-210.
  8. Luna, L.G. (1968). Manual of Histological Staining Methods of the Armed Forces Institute of Pathology. 3rd Ed. Mc Graw-Hill Book Company, New York.
  9. Mc Ewen, R.S., (1957). Vertebrate Embryology. 4th Ed. Henry Holt and Company, New York, p.701.
  10. Sadler, T.W. (2004). Langman’s Medical Embryology. 9th Ed. Lippincott Williams and Wilkins, Philadelphia, p.534.
  11. Singh, Y. Sharma, D.N. and Dhingra, L.D. (1979). Morphogenesis of the testis in goat. Indian J. Ani. Sci. 
  12. 49: 925-931.
  13. Truex, R.C. and Carpenter, M.B. (1969). Human Neuroanatomy. 6th Ed. The Williams and Wilkins, Baltimore.
  14. Wenisch, S., Jost, K. and Hummel, G. (1997). Morphology and histology of the colliculus rostrales in cattle. Anatomia Histologia Embryologia. 26: 281-287.
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Indian Journal of Animal Research
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    volume 47 issue 1 (february 2013) : 49-53

    HISTOGENESIS OF MESENCEPHALIC TEGMENTUM IN GOAT FOETUSES

    K
    K.M. Lucy*
    K
    K.R. Harshan
    J
    J.J. Chungath
    N
    N. Ashok
    1Department of Veterinary Anatomy, College of Veterinary and Animal Sciences, Mannuthy-680 651, India

    • Submitted|

    • First Online |

    • doi

    Cite article:- Lucy* K.M., Harshan K.R., Chungath J.J., Ashok N. (2025). HISTOGENESIS OF MESENCEPHALIC TEGMENTUM IN GOAT FOETUSES. Indian Journal of Animal Research. 47(1): 49-53. doi: .

    ABSTRACT

    Prenatal histogenesis of the mesencephalic tegmentum was studied using 46 goat foetuses ranging from 2.5 cm CRL (40 days of gestation) to 41.5 cm CRL (full term).  Standard procedures were adopted for histoarchitectural studies.  Neuroepithelial cells occupying the mesencephalic tegmentum of foetal goat brain differentiated during the seventh week of gestation. In the basal plate region, neuroblasts aggregated to form nuclei during the same age.  Tegmentum contained network of fibres and cells representing the reticular formation.  The development of mesencephalon was dependent on the differentiation of other parts of brain.  During third month, mesencephalic nucleus of trigeminal nerve, nuclei of oculomotor and trochlear nerves, tegmental nuclei, red nuclei and the substantia nigra were developed.  Nissl granules started appearing in neurons of the midbrain tegmentum by the middle of fourth month.  Ependyma lining the aqueduct was adult-like during fifth month. Myelination also began at this stage.  All the nuclei constituting midbrain architecture were well developed by term. Cells of the red nucleus were one among the largest neurons that could be seen in the entire brain.  The rubrospinal tract arising from the red nucleus is a major pathway of the extrapyramidal system and is of particular importance in domestic animals in postural control and locomotion.

    REFERENCES

    1. Arey, L.B. (1957). Developmental Anatomy. 6th Ed. W.B.Saunders Company, Philadelphia.
    2. Dellmann, H.D. and Mc Clure, R.G. (1975). In Sisson and Grossman’s the Anatomyof the Domestic Animals. 5th Ed. (Ed. Getty, R.). W.B. Saunders Company, Philadelphia. pp.1065-1080. 
    3. Dyce, K.M., Sack, W.O. and Wensing, C.J.G. (1996). Textbook of Veterinary Anatomy. 2nd Ed. W.B. Saunders Company, Philadelphia, p. 856.
    4. Herrera, M., Campo, F.S.D., Ruiz, A. and Agreda, V.M. (1988). Neuronal relationships between the dorsal periaqueductal nucleus and the inferior colliculus (Nucleus commissuralis) in the cat. A Golgi study. J. Anatomy. 158: 137-145.
    5. Jenkins, T.W. (1978). Functional Mammalian Neuroanatomy. 2nd Ed. Lea and Febiger, Philadelphia, p.480.
    6. King, A.S. (1987). Physiological and Clinical Anatomy of the Domestic Mammals.Oxford University Press, New York, , p.325.
    7. Klekamp, J., Reidel, A., Harper, C. and Kretschmann, H. J. (1987). A quantitative study of Australian Aboriginal and Caucasian brains. J. Anatomy. 150: 191-210.
    8. Luna, L.G. (1968). Manual of Histological Staining Methods of the Armed Forces Institute of Pathology. 3rd Ed. Mc Graw-Hill Book Company, New York.
    9. Mc Ewen, R.S., (1957). Vertebrate Embryology. 4th Ed. Henry Holt and Company, New York, p.701.
    10. Sadler, T.W. (2004). Langman’s Medical Embryology. 9th Ed. Lippincott Williams and Wilkins, Philadelphia, p.534.
    11. Singh, Y. Sharma, D.N. and Dhingra, L.D. (1979). Morphogenesis of the testis in goat. Indian J. Ani. Sci. 
    12. 49: 925-931.
    13. Truex, R.C. and Carpenter, M.B. (1969). Human Neuroanatomy. 6th Ed. The Williams and Wilkins, Baltimore.
    14. Wenisch, S., Jost, K. and Hummel, G. (1997). Morphology and histology of the colliculus rostrales in cattle. Anatomia Histologia Embryologia. 26: 281-287.
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