← Chapter 11 Nervous System A Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All central nervous system The______consists of the brain and spinal cord. brain The______is the largest and most complex part of the nervous system cerebral hemispheres The brain includes two______, the diencephalon, the brainstem, and the cerebellum. diencephalon The brain includes two cerebral hemispheres, the______, the brainstem, and the cerebellum. brainstem The brain includes two cerebral hemispheres, the diencephalon, the______, and the cerebellum. cerebellum The brain includes two cerebral hemispheres, the diencephalon, the brainstem, and the______. brainstem The______connects the brain and spinal cord and allows two-way communication between them. spinal cord The______provides two-way communication between the central nervous system and the peripheral nervous system. cranial cavity, vertebral canal The brain lies within the______of the skull and the spinal cord occupies the______. meninges ______are located between the bone and the soft tissues of the nervous system and protect the brain and spinal cord. meninges The______have three layers. dura mater The outermost layer is the______and is composed of tough, white, dense connective tissue. dura mater Dural sinuses are channels in______. pia mater Denticulate ligaments are bands of______that attach spinal cord to dura mater. epidural space The______is between the dural sheath and the bony walls of the spinal cord and contains blood vessels. arachnoid mater The______is thin, weblike membrane that lacks blood vessels and is located between the dura and pia maters. subarachnoid space The______is between the arachnoid mater and pia mater and contains a fluid called cerebrospinal fluid. pia mater The______is very thin and contains many nerves and blood vessels. pia mater The______is attached to the surfaces of the brain and spinal cord. ventricles ______are interconnected cavities and are located within the cerebral hemispheres and brain stem. central canal The ventricles are continuous with the______of the spinal cord and are filled with cerebrospinal fluid. lateral ventricles The largest ventricles are the______which are located in the cerebral hemispheres. third ventricle The______is located in the midline of the brain beneath the corpus callosum. fourth ventricle The______is located in the brainstem just in front of the cerebellum. cerebral aqueduct The______is a connection between the third and fourth ventricles. choroids plexus The______is a specialized mass of capillaries and functions to secrete cerebrospinal fluid. lateral ventricles Most of the cerebrospinal fluid arises in the______and circulates into the third ventricle, fourth ventricle, the central canal of the spinal cord, and the subarachnoid space. cerebrospinal fluid ______is continuously absorbed into the blood. arachnoid granulations ______are tiny, fingerlike structures that project from the subarachnoid space into the dural sinuses. cerebrospinal fluid ______is different from blood in that it contains a greater concentration of sodium and lesser concentrations of glucose and potassium. ionic concentration The functions of cerebrospinal fluid are to help maintain a stable______in the CNS, and provide a pathway to the blood for wastes. cerebrospinal fluid Because______completely surrounds the brain and spinal cord, it protects them by absorbing forces that might otherwise jar and damage them. multipolar neurons The brain includes about one hundred billion______and countless branches of the axons (nerve fibers) by which these neurons communicate with each other. dura mater The______contains many blood vessels and nerves. dura mater The______attaches to the inside of the cranial cavity and forms the internal periosteum of the surrounding skull bones. dura mater In some regions, the______extends inward between lobes of the brain and forms supportive protective partitions. dura mater In some regions, the______splits into two layers, forming channels called dural sinuses. dural sinuses Venous blood flows through the______as it returns from the brain to vessels leading to the heart. dural sheath The______terminates as a blind sac at the level of the second sacral vertebrae, below the end of the spinal cord. epidural space The______contains blood vessels, loose connective tissue, and adipose tissue that pad the spinal cord. arachnoid mater The______spreads over the brain and spinal cord but generally does not dip into the grooves and depressions of their surfaces. arachnoid mater Many thin strands extend from the______undersurface and are attached to the pia mater. pia mater The______follows the contours of the brain and spinal cord contours, passing over the high areas and dipping into the depressions. interventricular foramen The third ventricle communicates with the lateral ventricle through the______.