https://www.khanacademy.org/science/how-does-the-human-body-work/x0fe8768432761c62:neural-control-and-coordination/x0fe8768432761c62:human-nervous-system/e/functions-of-brain 2026-03-05T08:50:45.400692349Z Functions of brain An exercise to test basic functions of different parts of the brain. saiyem exercise https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:organization-of-the-nervous-system/v/gray-and-white-matter 2023-08-17T23:33:36.770424498Z Gray and white matter The central nervous system, with its gray and white matter, houses neuron somas and myelinated axons. The unique structure of the brain and spinal cord is explored. The cerebral cortex, nuclei, and tracts play vital roles in the brain's intricate functions. Matthew Barry Jensen video https://cdn.kastatic.org/googleusercontent/34lVLc7hNP_uKPJb-77iWBDr60ayzGtKcngqH3VvUwwe7sRl_ftittDKb1u9n3x75JUgS9iBojp-6A0VRz9edAV9 Gray and white matter The central nervous system, with its gray and white matter, houses neuron somas and myelinated axons. The unique structure of the brain and spinal cord is explored. The cerebral cortex, nuclei, and tracts play vital roles in the brain's intricate functions. https://cdn.kastatic.org/ka-youtube-converted/ZZQzMeFoZY0.mp4/ZZQzMeFoZY0.mp4 378 Organization of the nervous system https://www.khanacademy.org/science/biology/human-biology/neuron-nervous-system/v/overview-of-the-functions-of-the-cerebral-cortex 2024-02-09T21:30:53.441494697Z Overview of the functions of the cerebral cortex The human brain, with its wrinkly cerebral cortex, is split into four lobes: frontal, parietal, occipital, and temporal. The frontal lobe controls body movements and executive functions, including thinking and problem-solving. The parietal lobe processes touch, pressure, temperature, and spatial orientation. The occipital lobe handles vision, while the temporal lobe manages auditory processing and language comprehension. video https://cdn.kastatic.org/googleusercontent/IIWnlT202pcVh7cwWjsfqpPD4BdPT2ubZQw2HEYGpBQai4OZcMvfhJU75ORLuEoOTzhwpqRw_wfSD1aGsdOsh6aw Overview of the functions of the cerebral cortex The human brain, with its wrinkly cerebral cortex, is split into four lobes: frontal, parietal, occipital, and temporal. The frontal lobe controls body movements and executive functions, including thinking and problem-solving. The parietal lobe processes touch, pressure, temperature, and spatial orientation. The occipital lobe handles vision, while the temporal lobe manages auditory processing and language comprehension. https://cdn.kastatic.org/ka-youtube-converted/X-m0JDCw6TE.mp4/X-m0JDCw6TE.mp4 344 Organization of the nervous system https://www.khanacademy.org/science/up-biology-grade-11-revision-course-full-term/x01ceb15d0be61009:week-3/x01ceb15d0be61009:untitled-614/e/forebrain-and-reflex-action 2026-04-08T00:54:09.631945657Z Forebrain This exercise tests knowledge of the cerebral cortex, thalamus, hypothalamus, and limbic system. Moumita Sen exercise https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:organization-of-the-nervous-system/v/cerebellum 2023-08-17T23:33:36.770424498Z Cerebellum The cerebellum, tucked behind the brain stem, plays a crucial role in coordinating movement. It receives information about the motor plan and position sense, compares the two, and sends feedback to the motor areas of the cerebrum for adjustments. This process ensures smooth, accurate movements, from walking to speech and eye movements. Matthew Barry Jensen video https://cdn.kastatic.org/googleusercontent/0rjuuiQ1ySewTxRHYnf7hUIIDhn490oZsBWD7BzGT8acVCGpZZjJZ4PT9ex3T0T24sd4sD8xGvc_lOUEvx09GrEB Cerebellum The cerebellum, tucked behind the brain stem, plays a crucial role in coordinating movement. It receives information about the motor plan and position sense, compares the two, and sends feedback to the motor areas of the cerebrum for adjustments. This process ensures smooth, accurate movements, from walking to speech and eye movements. https://cdn.kastatic.org/ka-youtube-converted/xf1okjCwdOg.mp4/xf1okjCwdOg.mp4 427 Organization of the nervous system https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:organization-of-the-nervous-system/v/brainstem 2023-08-17T23:33:36.770424498Z Brainstem The brainstem, a small but mighty part of our nervous system, serves as a crucial connector between the cerebrum, spinal cord, and cerebellum. It houses the reticular formation, which plays a key role in autonomic functions and higher cognitive processes. The brainstem also hosts long motor and somatosensory tracts, and connects most cranial nerves, performing a myriad of functions in the head, neck, and even the trunk and limbs. Matthew Barry Jensen video https://cdn.kastatic.org/googleusercontent/V_mF5j9wsCMDeZaF_tQP4Oz0UFUF3ZgbJq5d7wlXWXhA89fp17jhr9o8jRR6fkXporMeXh8Y0kwGDoja-k66Z6aZ Brainstem The brainstem, a small but mighty part of our nervous system, serves as a crucial connector between the cerebrum, spinal cord, and cerebellum. It houses the reticular formation, which plays a key role in autonomic functions and higher cognitive processes. The brainstem also hosts long motor and somatosensory tracts, and connects most cranial nerves, performing a myriad of functions in the head, neck, and even the trunk and limbs. https://cdn.kastatic.org/ka-youtube-converted/MxDP1B5mKWA.mp4/MxDP1B5mKWA.mp4 482 Organization of the nervous system https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:organization-of-the-nervous-system/v/hemispheric-differences-and-hemispheric-dominance 2024-02-09T21:30:53.441494697Z Hemispheric differences and hemispheric dominance The brain's two halves, while physically identical, perform different functions. The left side, or dominant hemisphere, controls the right body side and handles language, logic, and math. The right side, or nondominant hemisphere, controls the left body side and manages emotional language tone, creativity, music, and spatial processing. They communicate via the corpus callosum. video https://cdn.kastatic.org/googleusercontent/873LufOm113a7q1J0RYrAwP6VXJHkpo4qwvbbmRK-lpC0CifDmm3i45a0qvEpxnF2NpDjup-Z-9vNHINnjEBia9i Hemispheric differences and hemispheric dominance The brain's two halves, while physically identical, perform different functions. The left side, or dominant hemisphere, controls the right body side and handles language, logic, and math. The right side, or nondominant hemisphere, controls the left body side and manages emotional language tone, creativity, music, and spatial processing. They communicate via the corpus callosum. https://cdn.kastatic.org/ka-youtube-converted/X4IL333rppM.mp4/X4IL333rppM.mp4 277 Organization of the nervous system https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/x6e556f83:structure-and-function-of-the-nervous-system/v/cerebral-cortex 2023-08-17T23:33:36.770424498Z Cerebral cortex Explore the cerebral cortex, the brain's outer layer of gray matter. Learn about its structure, including ridges (gyri), small grooves (sulci), and large grooves (fissures). Discover the four lobes: frontal, parietal, temporal, and occipital. Delve into the cortex's complex functions, from sensory processing to motor control. Matthew Barry Jensen video https://cdn.kastatic.org/googleusercontent/3iIWX82A0VVLAwaQ1Su3w5vP8UpAFYsx7IswfJEoYgihv7V0u4hHfjlrEKi8u0EF19WOruEUWui4rpG7a-9NigQ Cerebral cortex Explore the cerebral cortex, the brain's outer layer of gray matter. Learn about its structure, including ridges (gyri), small grooves (sulci), and large grooves (fissures). Discover the four lobes: frontal, parietal, temporal, and occipital. Delve into the cortex's complex functions, from sensory processing to motor control. https://cdn.kastatic.org/ka-youtube-converted/mGxomKWfJXs.mp4/mGxomKWfJXs.mp4 502 Organization of the nervous system 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 Organization of the nervous system https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/x6e556f83:structure-and-function-of-the-nervous-system/v/autonomic-nervous-system 2023-08-17T23:33:36.770424498Z Autonomic nervous system The autonomic nervous system, a part of our overall nervous system, regulates smooth muscle cells, cardiac muscle, and gland cells autonomously. It consists of two subsystems: the sympathetic nervous system for fight or flight responses, and the parasympathetic nervous system for rest and digestion. These systems influence our bodies in various circumstances. Matthew Barry Jensen video https://cdn.kastatic.org/googleusercontent/_8-T8taGT0O7fR1IHbFCJrDJZR99PhlrUIF6wT7Tgfl7qiIHZ0dlR3sThcXw6_O2MlXIMKZLl0Emf5i-wWhbCvJ1cg Autonomic nervous system The autonomic nervous system, a part of our overall nervous system, regulates smooth muscle cells, cardiac muscle, and gland cells autonomously. It consists of two subsystems: the sympathetic nervous system for fight or flight responses, and the parasympathetic nervous system for rest and digestion. These systems influence our bodies in various circumstances. https://cdn.kastatic.org/ka-youtube-converted/jA1NyCE4M2g.mp4/jA1NyCE4M2g.mp4 684 Organization of the nervous system https://www.khanacademy.org/science/health-and-medicine/advanced-muscular-system/x6e556f83:muscle-innervation/v/autonomic-somatic-nervous-system 2023-08-17T23:33:36.770424498Z Autonomic vs somatic nervous system Understand the different divisions of the brain that control our muscles. Unpack the nervous system's two key divisions: the autonomic and somatic systems. Learn how the autonomic system, managing involuntary actions, further divides into the sympathetic and parasympathetic systems. Discover the crucial role of neurotransmitters like acetylcholine and noradrenaline in these processes. By Raja Narayan. Raja Narayan video https://cdn.kastatic.org/googleusercontent/CbuytMSvhx452h1cA5OaLkjDhRITKwEytegBSJ4c2UD4hqSEVkpF6ycr9sij9KnotIJDRP5ZhATkQsYURiw8rMa_ Autonomic vs somatic nervous system Understand the different divisions of the brain that control our muscles. Unpack the nervous system's two key divisions: the autonomic and somatic systems. Learn how the autonomic system, managing involuntary actions, further divides into the sympathetic and parasympathetic systems. Discover the crucial role of neurotransmitters like acetylcholine and noradrenaline in these processes. By Raja Narayan. https://cdn.kastatic.org/ka-youtube-converted/ye28W_OygOw.mp4/ye28W_OygOw.mp4 228 Organization of the nervous system