The spinal cord is a continuation of the brainstem. It extends from the foramen magnum at the base of the skull to the L1/L2 vertebra where it terminates as the conus medullaris (medullary cone). Anatomy Cross-section of the spinal cord Functions Possible injuries Summary The spinal cord is a long bundle of nerves and cells that extends from the lower portion of the brain to the.
14.4 The Spinal Cord Anatomy & Physiology
Last update: Oct 24th, 2022 Learn anatomy faster and remember everything you learn Start Now The spinal cordis made up of 31 segments. Each segment gives rise to a pair of spinal nerves. 1 2 In cross-section (c.s.), the segments appear to be divided into two zones. The outer zone contains many myelinated axonsthat run up and down the spinal cord. Figure 12.6. 6: Spinal Nerve. The ventral and dorsal nerve roots exiting a cross section of spinal cord fuse together to form a spinal nerve, which then splits into the dorsal and ventral rami. The white and gray ramus form the rami communicantes that connect spinal nerves to autonomic ganglia. The spinal cord is part of the central nervous system and consists of a tightly packed column of nerve tissue that extends downwards from the brainstem through the central column of the spine. It is a relatively small bundle of tissue (weighing 35g and just about 1cm in diameter) but is crucial in facilitating our daily activities.. The spinal cord carries nerve signals from the brain to other. The spinal cord is a thick cable of nervous tissue extending from the medulla oblongata of the brain stem to the neck and torso. Viewed in a cross-section, it has a roughly oblong shape with white matter on its exterior and a butterfly-shaped region of gray matter on its interior. A small, circular tube-like cavity known as the central canal.
Spinal cord Anatomy, functions, and injuries
Next, the user will find anatomical sections of the spinal cord at different levels: cervical spinal cord (C2, C5), thoracic spinal cord (T10), lumbar spinal cord (L3) and sacral spinal cord (S3). Anatomy : Spinal cord, Funiculi of spinal cord, Tectospinal tract, Anterior funiculus; Ventral funiculus, Cuneate fasciculus, Gracile fasciculus. 1/8 Synonyms: none As the overseer of the majority of the body's physiological processes, the brain has numerous connections with extracranial structures. The spinal cord acts as one of the primary conduits through which the body and the brain exchanges information. The spinal cord is the caudal continuation of the brainstem. Reading time: 5 minutes So you've started the business of learning about the central nervous system and next up on the list is the spinal cord. Simply looking at the diagrams in your textbook has sent alarm bells ringing in your head: "Danger! Danger! This looks complicated!". Don't worry. In the article to follow, we've got you covered. A labelled cross-sectional diagram of the human spinal cord. Summary[edit] Date The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by a Volunteer Response Team (VRT) member and stored in our permission archive.
the structure of the brain and its functions
A cross-section through the spinal cord is illustrated schematically in Figure 2.6 and 3.4. The gray matter forms the interior of the spinal cord; it is surrounded on all sides by the white matter. The white matter is subdivided into dorsal (or posterior), lateral, and ventral (or anterior) columns. Start Now An interactive quiz covering Spinal Cord Cross-Sectional Anatomy through multiple-choice questions and featuring the iconic GBS illustrations.
In the spinal cord cross-section labeled diagram, we have shown Dorsal horn, Visceral sensory nuclei, Somatic sensory nuclei, afferent sensory information, efferent signals to muscles and glands via the ventral root, somatic motor nuclei, autonomic efferent nuclei, ventral horn, ventral root, lateral horn, and dorsal root ganglion. Tag biology The spinal cord is the part of the central nervous system found within the vertebral column's spinal canal. The cord extends from the corticomedullary junction at the foramen magnum of the skull down to the tip of the conus medullaris within the lumbar cistern .
Spinal Cord Anatomy Parts and Spinal Cord Functions
Terms in this set (23) Bulges on the sympathetic chain composed of neuronal cell bodies. Sign up and see the remaining cards. It's free! Start studying Spinal cord- Cross section labeled w/ functions. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Nervous System Definition Explore Spinal Cord Diagram with BYJU'S. Diagram of the spinal cord is illustrated in detail with neat and clear labelling. Also available for free download
