The bones of your spine protect the bundle of cells and tissue that make up your spinal cord. Your spinal cord is a delicate collection of nerves that runs down your back. Instead of wasting the time it would take to carry that message to your brain, your spinal cord sent a message to your arm muscles to pull away. Your spinal cord also controls your reflexes. foramen magnum; second lumbar vertebra The __________ enlargement of the spinal cord is the location where nerves that supply the upper limbs enter and leave the spinal cord, and the __________ enlargement is the location where nerves that supply the lower limbs enter and leave the spinal cord. Studies report male-to-female ratios of at least 2:1 among adults, sometimes much higher. Pairs of spinal nerves leave the cord in each segment of the body The cord forms part of the CENTRAL NERVOUS SYSTEM and contains many NERVE CELLS and bundles of fibres, many associated with simple REFLEX ARCS, others with the brain. Meaning of spinal cord. Like the brain, the spinal cord is covered by three credit by exam that is accepted by over 1,500 colleges and universities. The spinal cord's main function is to carry electrical signals between your brain and the rest of your body, but it also controls your reflexes, which are quick actions that your body does without telling the brain. © copyright 2003-2020 Study.com. spinal definition: 1. of the spine: 2. of the spine: 3. of the spine down the center of the back: . Incomplete Spinal Cord Injuries. This phenomenon is described as «swelling and swelling of the brain.» The swelling refers to the splitting of Visit the Biology for Kids page to learn more. The spinal cord is divided into four major parts: the cervical, thoracic, lumbar, and sacral nerves. The nerves for incoming sensory information are bundled separately from nerves for outgoing motor instructions for muscles. In this lesson, you'll learn about the spinal cord and its important functions in your body. Unlike other … In this lesson, you'll learn about the spinal cord and its important functions in your body. n. The thick, whitish cord of nerve tissue that extends from the medulla oblongata down through the spinal column and from which the spinal nerves branch... Spinal cord - definition of spinal cord by The Free Dictionary. Facet joints, along with the spinal disc, tolerate exercise of the spine that including forward bending, stretching your back with your head tilted backwards, or sideways twisting. A pair of spinal nerves leaves each segment of the spinal cord. The Spinal Cord is the thin, tubular bundle of nervous tissue and support cells that runs from the head to the lumbar region of the vertebral column. This prevents cerebrospinal fluid from reaching the brain. Definition of spinal cord in the Definitions.net dictionary. All rights reserved. Like the brain, the spinal cord is covered by three connective-tissue envelopes called the meninges. Spinal nerves come off of the spinal cord; at the bottom of the cord, these nerves bundle together to make the cauda equina, which looks like a horse's tail. Spinal cord (diagram) 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). spinal reflex any reflex action mediated through a center of the spinal cord. Spinal cord is the bundle of the spinal nerves enclosed in the spinal canal. Verb . Signs and symptoms may include weakness or numbness in the legs and bladder or bowel incontinence. Thirty-one pairs of spinal nerves make up the spinal cord and function to transmit messages between the brain and the rest of the body. Progress by passing quizzes and exams into branches or bowel incontinence simple skills we... 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