; The frontal plane, also called the coronal plane, which divides the body into front and back. In this article, we shall examine the macroscopic anatomy of the spinal cord – its structure, membranous coverings and blood supply. The median plane, which divides the body into left and right. Spinal Cord Segments – Cross-sectional Anatomy The spinal cord is made up of 31 segments, this tutorial shows some anatomy, cross section and histology images of … The axillary nerve originates as a terminal branch of the posterior cord of the brachial plexus.. ; The sagittal planes, which are parallel to the median plane. anterior horn of the spinal chord The white matter of the spinal cord is found in its periphery… Tough connective tissue layer of the meninges that is composed… Unlike motor neurons, which have cell bodies in the ventral horn of the spinal cord, sensory neurons have their cell bodies massed together in ganglia located outside of the spinal cord. An atypical teratoid rhabdoid tumor (AT/RT) is a rare tumor usually diagnosed in childhood. Spinal Cord White Matter (Anatomy & Functions); explained beautifully in an illustrated and interactive way. M1 Anterior Neck and Thorax Back and Spinal Cord Larynx, Pharynx, and Cervical Sympathetic Trunk Superior Mediastinum and Root of Neck Heart Lungs and Ventilation Pathway Posterior Mediastinum Kidneys and Urinary System Abdominal Wall, Peritoneum … The spinal cord is a tubular bundle of nervous tissue and supporting cells that extends from the brainstem to the lumbar vertebrae.Together, the spinal cord and the brain form the central nervous system. This passes through the head, spinal cord, navel, and, in many animals, the tail. The brachial plexus is formed by the ventral rami (roots) of the fifth to eighth cervical nerves (C5-8), along with the ventral ramus of the first thoracic nerve (T1).These five roots merge to form three trunks, the superior (C5-6), middle (C7) and inferior (C8-T1). The dorsal roots contain sensory nerve fibers and the ventral roots contain motor nerve fibers. The fibers emerge from the cord laterally between the anterior and posterior spinal nerve roots to form a single trunk, … Emitting from the spinal cord are dorsal and ventral roots. The spinal part (spinal portion) is firm in texture, and its fibers arise from the ventral horn cells in the cord between C1 and C5 of the cervical plexus. Dorsal Root Ganglion. Anatomical terms describe structures with relation to four main anatomical planes:.
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