As you will study in detail elsewhere in this course, neurons in deeper layers of the precentral gyrus grow axons to the motor nuclei of the brainstem and spinal cord that, in turn, innervate the striated muscles of the body. So letвЂ™s begin with the lateral aspect of the human brain and the frontal lobe.ДЄs you now know, the frontal lobe is the most anterior of the four lobes and is separated from the parietal lobe by the central sulcus ( Figure 2.1 see also Grants 7.86A and Netters 99A) it is certainly one of the most important landmarks in the cerebral cortex. The reason for doing so is to establish a common language (a nomenclature) and a robust mental model of cerebral hemispheres that we will use as we study and learn the functions of different regions of the cerebral cortex, as well as how they interact in networks that span multiple lobes of the cerebral mantle-and even the two hemispheres. Now that you have been introduced to the landmarks of each cerebral lobe, letвЂ™s look more closely at the complex patterns of gyri and sulci that are important to recognize. Functional organization of the cerebral cortex Medial and ventral surfaces of the cerebral hemispheresДЎ. Identify the cortical distribution of the three major cerebral arteries with respect to the lateral,.Examine a second specimen and notice any differences, such as asymmetries in the size of the vertebral or posterior communicating arteries.Identify all of the blood vessels that are illustrated in theДџigure as you can while holding or otherwise examining whole brain specimens.Posterior circulation of the human brain. Learning objective: to recognize and characterize the major vessels that contribute to the anterior and.Identify all of the gyri, sulci and other visible features that are illustrated in the Figure as you can while holding or otherwise examining whole brain specimens.Open the Laboratory Guide to Figure 2.4.Specimens: whole brain specimens (including selected specimens with hindbrain removed).Learning objective: to recognize and characterize the location and morphology of the principle gyri and sulci on the ventral aspect of the cerebral hemisphere. Review the gyral and sulcal patterns on the lateral and medial aspects of the hemispheres by performing the вЂњdigital brainвЂќ exercise in Challenge 2.1.Identify all of the gyri, sulci and fissures that are illustrated in the Figure as you can while holding or otherwise examining mid-sagittal brain specimens.Specimens: mid-sagittal hemispheres and brain models.Learning objective: to recognize and characterize the location and morphology of the principle gyri and sulci on the medial aspect of the cerebral hemisphere.Identify all of the gyri, sulci and fissures that are illustrated in the Figure as you can while holding or otherwise examining whole brain specimens and mid-sagittal brain specimens.Specimens: mid-sagittal hemispheres, whole brains, and brain models.to recognize and characterize the location and morphology of the principle gyri and sulci on the lateral aspect of the cerebral hemispheres.Building a Digital Brain (Fingers to Gyri).Lab 2 - Functional Organization of the Cerebral Cortex and Blood Supply

Sulci of the brain