Basic Anatomy: for A Tutorial of CT in Head Trauma (Nick Oldnall)
The Lobes and Sulci of the Cerebrum (Ross & Wilson)  
The CEREBRUM constitutes the largest part of the brain occupying the anterior and middle cranial fossae, It is divided by a long cleft the FALX CEREBRUM into the RIGHT & LEFT CEREBRAL HEMISPHERES each of which contains one lateral ventricle, the two hemispheres are connected deep within the brain by the CORPUS CALLOSUM.

The superficial part of the cerbrum is composed of nerve cells GREY MATTER forming the cerebral cortex which has many folds and invaginations called GYRI they are separated by fissures or SULCI each hemisphere is divided into lobes which have the names of the bones overlying them, FRONTAL, PARIETAL, TEMPORAL & OCCIPITAL

 

The Ventricles of the Brain (Ross & Wilson)  
Within the brain there are four irregular shaped cavities the VENTRICLES containing CERBROSPINAL FLUID CSF there are;

2 LATERAL VENTRICLES about 6 cm long lying in the cerebral hemispheres either side of the midline just below the corpus callosum and separated from it by the SEPTUM LUCIDUM

The THIRD VENTRICLE lies in the midline below the lateral ventricles between the two parts of the THALAMUS it communicates with the lateral ventricles via the INTERVENTRICULAR FORAMINA

A FORTH VENTRICLE sited below the third ventricle between the cerebellum and the PONS VAROLII and communicates with the third ventricle via the AQUEDUCT OF MIDBRAIN and below with central canal of the SPINAL CORD.

 

Coronal Section of the brain showing basic structure: (Ross & Wilson)  
The brain and spinal cord are covered by three membranes the meninges , named from outside to in the are, DURA MATER, ARACHNOID MATER, PIA MATER. The dura and arachnoid mater are separated by a potential space the SUBARCHNOID SPACE which contains CSF.

The DURA MATER consists of two layers of dense fibrous tissue the outer layer taking place of the periosteum of the skull bones.

The ARACHNOID MATER is a delicate serous membrane between the dura and the pia mater it is separated from the dura mater by a potential space the SUBARCHNOID SPACE the arachnoid mater covers the brain and dips down forming the falx ceribri, tentorium cerebri and the falx cerebelli.

The PIA MATER is a fine vascular membrane supported by connective tissue completely covering the brain and dips down into all the fissures

 

Axial Section of the Brain ((Tortora)