Take an anatomy tour through a coronal section of the normal brain at the level of the anterior commisure. Join me as I review the major neuroanatomical structures of the normal brain, touching on structures that are important to normal functioning and also key players in certain disease processes. https://youtu.be/lwF0AySb0c0
Fetal Gyral Development
During the first half of gestation, the human fetal brain has a smooth surface. At about 20 weeks gestation, the brain begins to form the bumps (gyri) and grooves (sulci) that are typical of the adult brain, averaging about 1 sulcus per week of gestation after 20 weeks. The brain of this 25 week gestation... Continue Reading →
Cortical Atrophy in an Elderly Person (90 years old)
A normal adult loses about 0.2% of brain volume every year after middle age. Compared to young and middle-aged adults, the brains of the elderly have comparatively widened sulci, narrowed gyri, a thin cortical ribbon, and enlarged ventricles due to progressive brain volume loss, which, clinically, may contribute slower processing speed for cognitive tasks and other changes. Microglia-mediated synaptic pruning and other etiologies for decreasing cortical volume in the... Continue Reading →
Video: Normal Anatomy of the Human Eye
Learn about the normal structures, layers and chambers of the human eye. https://www.youtube.com/watch?v=iZCVDtHHa7U&feature=share Subscribe to your Adventures in Neuropathology YouTube channel for more educational neuropathology content: Adventures in Neuropathology
Dorsal Root Ganglia
Dorsal root ganglia are located along the length of the spinal cord and are composed of clusters of large neuron cell bodies, each with a prominent nucleus and nucleolus, that belong to sensory nerves whose axons deliver sensory information to the spinal cord.