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J Morphol. 1992 Nov;214(2):179-85.

Muscles of the pelvic outlet in the fowl (Gallus gallus domesticus) with special reference to their nerve supply.

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Department of Anatomy, Faculty of Medicine, Tokyo Medical and Dental University, Japan.


The manner of innervation of the pelvic outlet muscles in fowl (Gallus gallus domesticus) was examined in detail in four male pelvic halves. The segmental arrangement of the nerve supply in the sacral and pudendal plexuses was compared to that of Lacertilia and Urodela as a basis for a morphological analysis of the pelvic outlet muscles. From the viewpoint of innervation, the pelvic outlet muscles of fowl are classified into two groups: a sphincter muscle group and a levator muscle group. These two groups are closely related to the ventral muscles of the pelvic limb. In contrast to the morphology of pelvic outlet muscles in lacertilians, in fowl the caudal muscle element does not contribute to the formation of these muscles.

[Indexed for MEDLINE]

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