Atlas of Human Anatomy in Cross Section: Section 1. Head and Neck
Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Jean J. Jew, M.D., and Paul
C. Reimann, B.S.
Peer Review Status: Externally Peer Reviewed
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Upper Left Quadrant |
Lower Left Quadrant |
Lower Right Quadrant |
Upper Right Quadrant |
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1. Callosomarginal br. of anterior cerebral a. |
9. Dura mater |
16. Cuneus gyrus |
22. Postcentral sulcus |
This section is through the body of the lateral ventricle (24). The occipital (13) and superficial temporal (8) arteries and the superficial temporal vein (7) are seen within the scalp (10). The galea aponeurotica (11), an epicranial aponeurosis between the connective tissue and loose areolar tissue layers of the scalp (10), is seen posteriorly. The middle meningeal artery and vein (23) are seen superficial to the dura mater (9). The dura mater (9) over the surface of the hemispheres is continuous with the falx cerebri (15), a dural fold in the interhemispheric fissure. The superior sagittal sinus (33) is seen within the falx cerebri. Ventral to the falx cerebri in the interhemispheric fissure are the pericallosal (2) and callosomarginal (1) branches of the anterior cerebral artery. The two hemispheres are connected by the forceps minor (3) and major (17) of the corpus callosum. In the lateral wall of the ventricle is the caudate nucleus (5). Medial to the caudate nucleus (5) is the thalamostriate (terminal) vein (6). The central sulcus (26) separates the frontal from the parietal lobes. Within the frontal lobes are seen the superior (31) and middle (4, 29) frontal gyri and the precentral gyrus (27). The superior frontal sulcus (30) separates the superior (31) and middle (4, 29) frontal gyri. The precentral sulcus (28) is anterior to the precentral gyrus (27). The central (rolandic) sulcus (26) separates the precentral (27) and postcentral (25) gyri. The precentral gyrus (27) is the primary motor cortex, whereas the postcentral gyrus (25) is the primary somatosensory (somesthetic) cortex. The postcentral sulcus (22) delineates the posterior boundary of the postcentral gyrus (25). The supramarginal (21) and the angular (18) gyri of the inferior parietal lobule are seen. The lateral (sylvian) fissure (20) separates the temporal from the frontal and parietal lobes. The superior temporal sulcus (19) is seen in close proximity to the angular gyrus (18). The parietooccipital sulcus (12) separates the medial surfaces of the parietal and occipital lobes. The cuneus gyrus (16) is seen caudal to the parietooccipital sulcus (12) in the occipital lobe, whereas the precuneus gyrus (14) is rostral to the parietooccipital sulcus (12) in the parietal lobe.
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