Study of Cranial Capacity & Its Sexual Dimorphism in Adult Human Skulls

ABSTRACTInca bones are accessory bones found in neurocranium of human skulls. Occurrence of Inca bones is rare as compared to other inter sutural bones such as wormian bones. These Inca ossicles are regarded as variants of the normal. The reporting of such occurrences is inadequate from Central India. Objectives: To fi nd the incidence of Inca variants in Central India. Materials and Methods: In the present study, 380 dried adult human skulls were examined. All specimen samples were procured from various Medical colleges of Central India. They were analyzed for gross incidence, sexual dimorphism and number of fragments of Inca bones. Results: Gross incidence of Inca bones was found to be 1.315 %. Incidence rate was higher in male skulls than female skulls (male: 1.428%; female: 1.176%). The Inca bones frequently occurred signally. Out of the fi ve observed Inca ossicles, two were fragmented. Conclusions: This data gives idea regarding gross incidence, sexual dimorphism and number of fragments of Inca bones in neurocranium of human skulls from Central India. The knowledge of this variable is useful for neurosurgeons, anthropologists and radiologists.

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Sexual Dimorphism in Craniometric Characteristics of Occipital Bone in Adult Human Skulls from West Bengal, India

Journal of Life Sciences ◽

10.1080/09751270.2017.1336017 ◽

2017 ◽

Vol 9 (1) ◽

pp. 28-32

Author(s):

Sudip Datta Banik

Keyword(s):

Sexual Dimorphism ◽

West Bengal ◽

Occipital Bone ◽

Adult Human ◽

Human Skulls

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An Account of the Anthropoid Apes, chiefly with reference to Specimens recently acquired by the Edinburgh Museum of Science and Art

Proceedings of the Royal Society of Edinburgh ◽

10.1017/s0370164600046289 ◽

1869 ◽

Vol 6 ◽

pp. 501-504 ◽

Cited By ~ 1

Author(s):

Allman

Keyword(s):

Healthy Adult ◽

The Other ◽

Cranial Capacity ◽

Cranial Cavity ◽

Human Skull ◽

Adult Human ◽

Science And Art ◽

Human Skulls

In taking cranial capacity as a ground of comparison between the Anthropoids and Man, he gave some measurements of skulls contained in the Museum. The capacity of the cranial cavity in the Gorilla skeleton belonging to the Museum is 29 cubic inches. Considerably larger gorilla skulls, however, have been measured. The smallest healthy adult human skulls in the Museum are those of two Andaman Islanders. Of these, one has a cranial capacity of 75·5 cubic inches, and the other a capacity of 72 cubic inches. Next to these comes a Peruvian skull; its cranial cavity measures 76 cubic inches. The smallest healthy adult human skull measured by Morton was also that of a Peruvian, whose cranial capacity measured only 58 cubic inches.

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