Type of Article: Original Research
Year: 2016 | Volume 4 | Issue 3 | Page No. 2622-2625
Date of Publication: 31-07-2016
CORRELATION OF APPERANCE OF GYRI ON SUPEROLATERAL SURFACE OF FOETAL BRAIN WITH GESTATIONAL AGE
Gayatri. N * 1, Nagaraj. S 1, D. Suseelamma 2, Anil. R. Sherke 3.
*1 Assistant Professor, Department of Anatomy, Kamineni institute Of Medical sciences, Narketpally, Narketpally, Talangana, India.
2 Professor and Head of the Department Anatomy, Mamatha Medical College, Khammam, Talangana, India.
3 Professor and Head of the Department Anatomy, Kamineni institute Of Medical sciences, Narketpally.
Address: Dr. Gayatri. N, Asst. Professor of Anatomy, Kamineni Institute of Medical sciences, Narketpally-508254, Dist.-Nalgonda, Telangana, India. Mobile no.: +919866084854.
Background: Localisation of gyral structures of human cerebral cortex is important for interpretation of morpho-functional data. Gyral pattern of human brain is responsible for mankind intelligence. Cerebral convolutions are extremely complex, hence it is often difficult to define them precisely. Gyration proceeds with the formation of sulci and help in the brain maturation.
Materials: This study was conducted on 50 dead foetuses in anatomy department brought from the department of Obstetrics and gynaecology.
Results: The brain surface is smooth up to 4th month, lateral cerebral fossa appears on the supero lateral surface at 14weeks with complete formation of insula by 20thweek. The supero lateral surface of brain showed the remarkable change between 24-28weeks, this reflects the rapid growth spurt of brain. Growth of adjoining lobes of brain make surface more convoluted with well-defined gyral pattern between 24-30weeks.
Conclusion: Cortical folding is due to consequence of restricted space and rapid growth of brain with in the cranial cavity. There is no differences between male and female brains of same gestational age, with no obvious asymmetrical development of gyri on different lobes of brain. Cerebral gyri form the main surgical corridors of modern microsurgery.
KEY WORDS: Cortical maturation, gyri, Gestational age, convolutions.
- Peter L. Williams, Roger Warwick, Bannister LH, Berry MM, et al. Henry Gray’s Anatomy. The Anatomical Basis of Medicine and Surgery. 39th ed. Edinburg: Elsevier Churchill Livingstone;2005.pp
- Catherine Garel, Emmanuel Chantrel Herve Bris et al: Foetal Cerebral Cortex: Normal Gestational Landmarks Identified Using Prenatal MRI; American Journal of Neuroradiology.2001;22:184-189.
- Uhn Lee, A. C. Bastos, M. A. Alonso-Vanegas, R. Morris, A. Olivier et al: Topographic Analysis of the Gyral Patterns of the central area , Sterotatic & Functional Neuro surgery.1988;70(1).
- Dr. Hughey: Military Obstetrics & Gynecology. Brookside Associates Medical Education Division. 2009;395.
- G. J. Romanes : Cunningham Manual Of Practical Anatomy, Head & Neck & Brain.1986;39(15):43-44.
- Development of Nervous system. Henry Gray’s 39th edition, London ; Elsevier Churchill & Livingstone P,2005:266
- V. I. Savel’ev: variability of sulci and gyri in the inferior parietal region of the human during ontogeny. Neuroscience & Behavioural Physiology.1984;14(1):60-63.
- A.Afif, R. Bouvier, A. Bunerd, J. Trouillas and P. Mertens: Development of the human fetal insular cortex: study of the gyration from 13 to 28 gestational weeks. Brain Structure and Function.2010;212(3-4):335-346.
- Chi JG, Dooling EC, Gilles FH: Gyral development of the human Brain. Ann Neurol.1977;1:86-93.
- Deborah Levine, Patrick. Barnes: Cortical Maturation in Normal and Abnormal Fetuses as Assessed with Prenatal MR Imaging: Radiology.1999;210:751-758.
Gayatri. N, Nagaraj. S, D. Suseelamma, Anil. R. Sherke. A CORRELATION OF APPERANCE OF GYRI ON SUPEROLATERAL SURFACE OF FOETAL BRAIN WITH GESTATIONAL AGE. Int J Anat Res 2016;4(3):2622-2625. DOI: 10.16965/ijar.2016.294