| تعداد نشریات | 24 |
| تعداد شمارهها | 903 |
| تعداد مقالات | 8,081 |
| تعداد مشاهده مقاله | 15,203,538 |
| تعداد دریافت فایل اصل مقاله | 12,847,896 |
Allometric growth rate of the spinal cord in relation to the vertebral column during prenatal life in male and female goats (Capra hircus) | ||
| Iranian Journal of Veterinary Research | ||
| مقاله 4، دوره 17، شماره 4 - شماره پیاپی 57، 2016، صفحه 243-246 اصل مقاله (73.02 K) | ||
| نوع مقاله: Full paper (Original article) | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2016.3909 | ||
| نویسندگان | ||
| S. M. Ghazi* 1؛ R. Ranjbar2؛ M. Khaksary Mahabady2 | ||
| 1Ph.D. Student in Comparative Anatomy and Embryology, Department of Anatomical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
| 2Department of Anatomical Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
| چکیده | ||
| Total and regional allometric growth rates and termination sites of the spinal cord related to the respective vertebra were studied in 36 goat fetuses, from the Ahvaz slaughterhouse. These specimens were assigned to 3 groups, group 1 (CRL 10-20 cm), group 2 (CRL 21-30 cm), and group 3 (CRL 31-40 cm), each consisting of 6 male and 6 female fetuses. Observations in all 3 groups revealed that although the growth of the vertebral column was greater than that of the spinal cord, the difference in growth was not constant throughout the spine. While in cervical and thoracic regions the growth rate of the spinal cord in relation to the vertebral column was almost isometric, in the caudal part of the spine there was marked decline in growth of the spinal cord compared to the respective regions of the vertebral column. Craniocaudally, the allometric growth rate became drastically negative. There was no significant difference (P>0.05) between males and females. Except in thoracic region, all other regions showed significant differences (P<0.01) between similar regions in all 3 groups. In the lumbar region of group 2 no significant difference was found (P>0.05). As a consequence of the negative allometric growth of the spinal cord in relation to the vertebral column in the caudal part of the spine, the conus medullaris was displaced from S4-S5 in group 1 to S2 in group 3. No significant difference (P>0.05) between male and female fetuses concerning the termination of the spinal cord was found. | ||
| کلیدواژهها | ||
| Allometric growth rate؛ Goat fetus؛ Termination of the spinal cord | ||
| مراجع | ||
|
Barry, A (1956). A quantitative study of the prenatal changes in angulation of the spinal nerves. Anat. Res., 126: 97-110.
Fletcher, TF and Kitchel, RL (1966). Anatomical studies on the spinal cord segments of the dog. Am. J. Vet. Res., 27: 1759-1767.
Ghazi, SR and Gholami, S (1993a). Changes in the termination of spinal cord at vertebral levels during pre- and postnatal development of sheep. J. Appl. Anim. Res., 4: 61-66.
Ghazi, SR and Gholami, S (1993b). A study of the length of the spinal cord in pre- and postnatal life in Mehraban sheep (Ovis aries). Vet. Res. Com., 17: 417-420.
Ghazi, SR and Gholami, S (1994). Allometric growth of the spinal cord in relation to the vertebral column during prenatal and postnatal life in sheep (Ovis aries). J. Anat., 185: 427-431.
Ghazi, SR; Gholami, S and Khaksar, Z (1998). Allometric growth of the spinal cord in relation to the vertebral column during postnatal life in one humped male camel (Camelus dromedarius). J. Cam. Prac. Res., 5: 75-79.
Ghazi, SR; Gholami, S; Khaksar, Z; Najarzadeh, M and Gheisari, HR (2000a). Allometric growth rate of the spinal cord in relation to the vertebral column in the male and female fowl (Gallus domesticus) and turkey (Meleagris gallopavo). Iran. J. Vet. Res., 1: 39-52.
Ghazi, SR; Khaksar, Z and Gholami, S (2001a). Com-parative study of the allometric growth rate of the spinal cord in relation to the vertebral column in newborn male and female laboratory animals: rabbit, guinea pig and rat. Iran. J. Vet. Res., 2: 18-24.
Ghazi, SR; Khaksar, Z; Gholami, S and Barazandeh, M (2000b). Allometric growth rate of the spinal cord in relation to the vertebral column in rabbit. J. Fac. Vet. Med. Univ. Tehran. 55: 25-28.
Ghazi, SR; Khaksar, Z; Gholami, S and Dalilikajan, M (2000c). Allometric growth rate of spinal cord in relation to the vertebral column in rat. Sci. J. Fac. Vet. Med. Shahid Chamran Univ. Ahvaz. 1: 1-14.
Ghazi, SR; Khaksar, Z; Gholami, S and Mohammadian, N (2000d). Allometric growth of the spinal cord in relation to the vertebral column in the male and female domestic goose. J. Fac. Vet. Med. Univ. Tehran. 55: 45-48.
Ghazi, SR; Mansouri, SH and Ay, J (2001b). Developmental variations of the spinal cord and its termination during pre- and postnatal life in the male dog. Iran. J. Vet. Res., 2: 40-45.
Ghazi, SR; Mansouri, SH and Monsefi, M (2004a). The study of the developmental changes of allometric growth rate of the spinal cord in relation to the vertebral column in prenatal and postnatal male cat. Iran. J. Vet. Res., 4: 29-36.
Ghazi, SR; Mansouri, SH and Monsefi, M (2004b). Study of anatomical position of termination of the spinal cord in different ages of male cat. J. Fac. Vet. Med. Univ. Tehran. 59: 199-200. Gholami, S; Ghazi, SR and Khaksar, Z (1997). Postnatal changes of termination of the spinal cord in camel (Camelus dromedarius). J. Appl. Anim. Res., 11: 69-72.
Hifny, A; Ahmed, AK and AMnsour, AA (1984). The relation between the vertebral column and spinal cord of Equus asinus. Assiut. Vet. Med. J., 12: 3-6.
Khaksar, Z; Ghazi, SR and Gholami, S (2002). Quantitative study of the vertebral column and spinal cord in adult male and female pigeons. J. Fac. Vet. Med. Univ. Tehran. 57: 39-42.
Kunitomo, K (1918). The development and reduction of the tail and of the caudal end of the spinal cord. Contr. Embryol., 8: 161-198.
Malinska, J; Kapoun, S and Malinski, J (1972). Topography of the spinal cord in the east central European hedgehog. Folia Morphol. (Prague). 20: 182-184.
McCotter, RE (1916). Regarding the length and extent of the human medulla spinalis. Anat. Res., 10: 559-564.
Morgan, JP; Atilola, M and Bailey, CS (1987). Vertebral canal and spinal cord mensuration: a comparative study of its effect on lumbosacral myelography in the Dachshund and German shepherd dog. JAVMA. 191: 951-957.
Nizankowski, C and Kurlej, W (1982). Contribution to studies on the apparent ascent of the spinal cord in human fetuses. Folia Morphol. (Warsz). 41: 33-48.
Rahmanifar, F; Ghazi, SR and Mansouri, SH (2008). A comparative study of allometric growth rate of spinal cord in relation to the vertebral column in chick and adult male ostrich (Struthio camelus). Sci. J. Fac. Vet. Med. Shahid Chamran Univ. Ahvaz. 3: 39-47.
Roth, ML and Purkyne, JE (1985). Normal neurovertebral growth relation. Acta Fac. Med. Univ. Brun., Opusc Morphol., 91: 11-34.
Sakla, FB (1969). Quantitative studies on the postnatal growth of the spinal cord and the vertebral column of the Albino mouse. J. Com. Neurosci., 136: 237-252.
Streeter, GL (1919). Factors involved in the formation of the filum terminal. Am. J. Anat., 25: 1-11.
Taluja, JS; Shrivastava, A and Malik, MR (1989). Regional cross-sectional area of the prenatal caprine spinal ganglia. Ind. J. Anim. Sci., 59: 829-830. | ||
|
آمار تعداد مشاهده مقاله: 1,471 تعداد دریافت فایل اصل مقاله: 905 |
||