Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1993-4-20
pubmed:abstractText
The volumes of the paranasal sinuses of 41 adult skulls of humans, gorillas, chimpanzees and orangutans, were examined with use of a Computertomograph type SOMATOM DR. The percentage distribution of the volumes of the different paranasal sinuses showed that the maxillary sinus always had the greatest volume. The maxillary sinus of the humans showed the smallest volume percentage in comparison with the pongids. The typical differences between humans and pongids were observed in the ethmoidal cells and the sphenoidal sinus. The ethmoidal cells of the gorilla and the orangutan have to be defined as rudimentary. Those of the humans come to more than 20% of the total volume of the paranasal sinuses of all hominoids. Differing from the humans, the sphenoidal sinus of the pongids pneumatizes almost the whole sphenoid bone. This volume percentage of the pongids is twice as high as that of the humans. In addition, an index was calculated from the volume of the facial skeleton volume and the total volume of the paranasal sinuses and defined as the degree of pneumatization. We found that the gorilla has the highest degree of pneumatization followed by the chimpanzee, the orangutan, and the humans. The lowest degree of pneumatization of the humans may be related to the reduction of the jaws.
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-7722
pubmed:author
pubmed:issnType
Print
pubmed:volume
67
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
725-34
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
[Study of the degree of pneumatization of the viscerocranium in man and pongidae].
pubmed:affiliation
Department of Anatomy, Okayama University School of Dentistry, Japan.
pubmed:publicationType
Journal Article, Comparative Study, English Abstract