Medical illustration showing the fibers crossing the midline of the brain and the terminology used to describe them. The illustration includes a midsagittal plane through the brain (left) and a coronal section of the brain (right).

Medical illustration of the orientation of the planes of section in the central nervous system (brain and spinal cord). Shown are transverse, sagittal, coronal, horizontal, and oblique sections.

Medical illustration of the basal ganglia, showing its location in the brain and lateral, anterior, and posterior views.

Medical illustration of the midbrain tectum and its surrounding structures, with labels for the tegmentum, tectum, base of the pons, and pyramid.

Medical illustration of the midbrain tectum and its surrounding structures, including the tegmentum, tectum, base of the pons, and pyramid.

Medical illustration of the longitudinal axes of the central nervous system (brain and spinal cord), lateral view. Axes labeled for the brain are the rostral (anterior) and caudal (posterior), dorsal and ventral; those for the spinal cord are the ventral (anterior) and dorsal (posterior), rostral and caudal.

Medical illustration of the longitudinal axes of the central nervous system (brain and spinal cord), lateral view. Axes for the brain are the rostral (anterior) and caudal (posterior), dorsal and ventral; those for the spinal cord are the ventral (anterior) and dorsal (posterior), rostral and caudal.

Medical illustration of the brain stem, dorsal view, associated with a coronal section of the cerebral cortex.

Medical illustration of the ventricles of the human brain, lateral, dorsal, and anterior views. Labeled structures include the third, fourth, and lateral ventricles; horns of the lateral ventricle; interventricular foramen; cerebral aqueduct; septum pellucidum, and foramina of Luschka.

Medical illustration of the ventricles of the human brain, lateral, dorsal, and anterior views. The structures shown include the third, fourth, and lateral ventricles; interventricular foramen; cerebral aqueduct; septum pellucidum, and foramina of Luschka.

Medical illustration of the basic structures of the cerebral hemispheres, with labels. Shown are lateral, medial (sagittal), and anterolateral views of the cerebral hemispheres, including a coronal view. Shown are the corpus callosum, right and left cerebral hemispheres, longitudinal fissure, cortex, gyrus, sulcus, and white matter.

Medical illustration of the basic structures of the cerebral hemispheres, shown in lateral, medial (sagittal), and anterolateral views, including a coronal view. Structures shown include the corpus callosum, right and left cerebral hemispheres, longitudinal fissure, cortex, gyrus, sulcus, and white matter.

Medical illustration of the brain stem showing the cerebellar peduncles, lateral view. Stuctures labeled include the olivary eminence, medulla, midbrain (cerebral peduncle), transverse fibers of pons, and the superior, inferior, and middle cerebellar peduncles.

Medical illustration of the brain stem depicting the cerebellar peduncles, lateral view. Stuctures shown include the olivary eminence, medulla, midbrain (cerebral peduncle), transverse fibers of pons, and the superior, inferior, and middle cerebellar peduncles.

Medical illustration of the brain showing the location of the choroid plexus in the ventricles, lateral view. Labeled structures include the interventricular foramen, the cerebral aqueduct, and the third, fourth, and lateral ventricles.

Medical illustration of the brain showing the location of the choroid plexus in the ventricles, lateral view. Structures shown include the interventricular foramen, the cerebral aqueduct, and the third, fourth, and lateral ventricles.

Medical illustration of the basic design of the central nervous system, showing the brain, coronal section, and spinal cord, horizontal section. Labeled structures include the ventricles, gray matter, white matter, and central canal of the spinal cord.

Medical illustration of the basic design of the central nervous system, showing the brain, coronal section, and spinal cord, horizontal section. Structures shown include the ventricles, gray matter, white matter, and central canal of the spinal cord.

Medical illustration showing the meninges of the brain and spinal cord, dorsal view. Labeled structures include the internal jugular vein, dura mater, subarachnoid space, arachnoid, arachnoid trabeculae, denticulate ligament, pia mater, and the superior sagittal, transverse, and occipital sinuses. The inset shows the view angle.

Medical illustration showing a dorsal view of the meninges of the brain and spinal cord. Structures depicted include the internal jugular vein, dura mater, subarachnoid space, arachnoid, arachnoid trabeculae, denticulate ligament, pia mater, and the superior sagittal, transverse, and occipital sinuses. The inset shows the view angle.