https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/nervous-system-introduction/v/structure-of-the-nervous-system 2023-09-10T17:11:17.624018169Z Structure of the nervous system The nervous system is divided into two main parts: the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, made up of nerves and ganglia. Information travels in two directions: from the periphery to the central nervous system via afferent neurons, and from the central nervous system to the periphery via efferent neurons. This system connects the entire body back to the brain and spinal cord. Matthew Barry Jensen video https://cdn.kastatic.org/googleusercontent/B7v5AILr_uAoXg4OYryFIvHJjr9R-b3_SOWE_5LvRbfUBqLthbHKap9XAwymdcYhIksDdyt7Kg-GzUVs8Wtt1u_- Structure of the nervous system The nervous system is divided into two main parts: the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, made up of nerves and ganglia. Information travels in two directions: from the periphery to the central nervous system via afferent neurons, and from the central nervous system to the periphery via efferent neurons. This system connects the entire body back to the brain and spinal cord. https://cdn.kastatic.org/ka-youtube-converted/jmD0LBdAvlE.mp4/jmD0LBdAvlE.mp4 528 Organisation of the mammalian nervous system https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:coordination-and-control/x2a084a90105205d2:organisation-of-the-mammalian-nervous-system/v/nervous-system-central-peripheral-ur 2025-08-08T00:50:08.705567982Z Nervous system (central & peripheral) Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Nervous system (central & peripheral) Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/iuP_7ual3xE.mp4/iuP_7ual3xE.mp4 615 Organisation of the mammalian nervous system https://www.khanacademy.org/science/cambridge-o-level-biology-cie/x2a084a90105205d2:coordination-and-control/x2a084a90105205d2:organisation-of-the-mammalian-nervous-system/v/brain-parts-functions-fore-mid-hind-ur 2025-08-08T00:50:08.705567982Z Brain: Parts & functions (Fore, mid & hind) Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Brain: Parts & functions (Fore, mid & hind) Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/W8ns6edsy8Q.mp4/W8ns6edsy8Q.mp4 876 Organisation of the mammalian nervous system