Diagram of human brain

Brain activity is structured in space and time. The resulting activity patterns are conventionally thought to depend on an intricate web of anatomical connections that link specialized populations of cells. This work challenges this paradigm by showing that macroscale neuronal dynamics of the human brain are fundamentally shaped by its physical geometry.

• The walls of the lateral ventricles and the roofs of the third and fourth ventricles are lined with a layer of specialized tissue known as the • CSF passes from the lateral ventricles, through two holes called the interventricular foramina, and into the third ventricle. • From there, CSF passes through a connecting structure called the cerebral aqueduct and into the fourth ventricle. • CSF exits the fourth ventricle and drains into the subarachnoid space. CSF also passes through a structure called the obex before draining into the central canal of the spinal cord. • Shock absorption: When you fall, get into a car accident, or otherwise knock your head, the CFS encasing your brain absorbs the shock so that your brain does not smack against your skull. • Nutrition: CSF supplies your central nervous system with essential nutrients, such as • • Waste removal: CSF washes through your subarachnoid space, cleaning up toxins and waste products, which are then carried to your • Temperature: CSF circulation keeps the temperature of your brain and spine stable. • A Word From Verywell If you or a loved one has survived one of these conditions, consider joining a support group online or in your community. Support groups can be invaluable for many survivors, as they offer a safe place to share personal stories and ask for advice from people who understand what you're going through. • Khasawneh AH, Garling RJ, Harris CA. Brain Circ. 2018;4(1):14-18. doi:10.4103/bc.bc_3_18 • Strittmatte...

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts. The brain and spinal cord form the control center known as the central nervous system (CNS), where information is evaluated and decisions made. The sensory nerves and sense organs of the peripheral nervous system (PNS) monitor conditions inside and outside of the body and send this information to the CNS. Efferent nerves in the PNS carry signals from the control center to the muscles, glands, and organs to regulate their functions. Nervous System Anatomy Nervous Tissue The majority of the nervous system is tissue made up of two classes of cells: neurons and neuroglia. Neurons Neurons, also known as nerve cells, communicate within the body by transmitting electrochemical signals. Neurons look quite different from other cells in the body due to the many long cellular processes that extend from their central cell body. The cell body is the roughly round part of a neuron that contains the nucleus, mitochondria, and most of the cellular organelles. Small tree-like structures called dendrites extend from the cell body to pick up stimuli from the environment, other neurons, or sensory receptor cells. Long transmitting processes called axons extend from the cell body to send signals onward to other neurons or effector cells in the body. ...