Types of Glial Cells
What type of glial cells migrate to phagocytize foreign debris?
What is microglia?
What type of ion channels open with the binding of a specific neurotransmitter?
What is chemically gated channels?
What is the basic functional unit of the nervous system?
What is a neuron?
What structure covers and protects the CNS and blood vessels, contains CSF, and forms partitions within the skull?
What are meninges?
What are the 2 major arteries that go to the brain?
What are the internal carotid and vertebral arteries?
What type of glial cells produce and move cerebrospinal fluid?
What is ependymal cells?
What type of ion channels are always open but only allow for small amounts of ion movement?
What is the receptive region of a neuron?
What are dendrites?
What is the outermost layer of the meninges that contains branches of the middle meningeal artery and vein?
What is dura matter?
What artery supplies most of the lateral cerebral hemispheres and the posterior basal ganglia?
What is the middle cerebral artery?
What glial cells surround the fibers of the PNS and make up the myelin sheath?
What are Schwann cells?
What type of ion channels open and close in response to the physical deformation of receptors?
What is mechanically gated channels?
What part of a neuron generates and transmits action potentials, and is a slender process of uniform diameter arising from the hillock?
What are axons?
What is the middle layer of the meninges that forms a loose brain covering and has a filmy and web-like structure?
What is arachnoid mater?
What structure provides an alternative supply of blood if a segment of the main arterial channel is blocked?
What is the Circle of Willis?
What are the most abundant glial cells that support and brace neurons, guide the migration of young neurons, and control the chemical environment?
What is astrocytes?
What type of ion channels open and close in response to membrane potential changes?
What are voltage-gated channels?
What protects the axon, increases the speed of nerve impulse transmission, and electrically insulates fibers from one another?
What is a myelin sheath?
What is the deepest layer of the meninges? It is very thin and clings tightly to the brain.
What is pia matter?
Where does the venous blood of the brain empty into the spaces between dural layers?
What are dural venous sinuses?
What are branched cells that wrap CNS nerve fibers and connect to multiple axons?
What are oligodendrocytes?
What ion can enter the cell when a neurotransmitter is attached to a chemically gated channel?
What is NA+
What structures are critical for the conduction of action potentials, and are the "bare areas" between myelinated fibers?
What are Nodes of Ranvier?
What structures in the arachnoid mater protrude and permit CSF to be absorbed into venous blood?
What are arachnoid villi?
What is the location where the transverse and superior sagittal sinuses merge?
What is the confluence of sinuses?