20.05.2013 Views

Hand atlas of human anatomy - EducationNest

Hand atlas of human anatomy - EducationNest

Hand atlas of human anatomy - EducationNest

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Angulus frontalis<br />

Sulcus arteriosus<br />

Angulus<br />

spheuoidalis<br />

Bones <strong>of</strong> the Skull. 19<br />

Margo sagittalis<br />

Sulcus sagittalis Facies cerebralis<br />

" ~ Margo squamosus- ..-J<br />

A.ngulus occipitalis<br />

Sulcus transversus<br />

Angulus mastoideus<br />

20. Right parietal bone, os parietale. from within.<br />

The fades parietalis is more or less markedly bulged out in the middle; this pro-<br />

jection is called the tuber parietale. Below it nms the linea temporalis inferior, convex<br />

above, which begins at the margo frontalis as a continuation <strong>of</strong> the Unea temporalis oss. fi'on-<br />

talis and goes over at the angulus mastoideus into the linea temporahs oss. temporahs ; it<br />

itself and the field beneath give origin to the m. temporahs. Concentric with it runs generally<br />

a less marked linea temporalis superior, which ends at the margo occipitalis ; to it are attached<br />

the fascia temporahs and the galea aponeurotica. Close to the margo sagittahs there is <strong>of</strong>ten,<br />

near the angulus occipitalis, an opening, the foramen paiietale (for the r. meningeus a<br />

occipitalis, emissarium parietale).<br />

On the facies cerebralis along the margo sagittahs runs a groove, completed by<br />

apposition with the .parietal hone <strong>of</strong> the other side, the sulcus sagittalis (for the sinus sagit-<br />

tahs sup. ; falx cerebri), into which the foramen parietale usually opens. Over the inner siu-<br />

face <strong>of</strong> the angTdus mastoid, runs a short broad flat gr(.iove, the sulcus transversus (0. T.<br />

groove for lateral sinus) (for the sinus transvers.j. At the angulus sphenoid, is foimd a deep<br />

sulcus arteriosus, sometimes for a short distance an actual canal, otherndse sevi-ral shallower<br />

ones, for branches <strong>of</strong> the a. mening. med. In addition the facies cerehrahs presents im-<br />

pressiones digitatae and. juga cerebralia and also frequently, especially in older people, near<br />

the sulcus sagittalis, foveolae granularcs [Pacchioni] (0. T. Pacchionian depressions).

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!