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What are the two types of cells found in the nervous system? neurons and glia
What are the three main parts of the neuron? dendrites, cell body, axon
What are three types of neurons? 1.Sensory 2.Motor 3.Interneurons
Sensory neurons are also called? afferent neurons
Motor neurons are also called? efferent neurons
Interneurons are only found in what part of the nervous system? CNS
What forms myelin in the CNS? Schwann cells
What forms myelin in the PNS? Oligodendrocytes
What are the indentations between adjacent Schwann cells called? Nodes of Ranvier
What are the supporting cells in the nervous system? Glia
What glia cell forms the Blood-brain barrier? Astrocytes
What glia cell carries out phagocytosis? Microglia
What is a nerve? A group of Peripheral nerve fibers bundled together
What are tracts? bundles of axon in the CNS
What is an example of a two-neuron reflex arc? Knee-jerk
What is an example of a three-neuron reflex arc? withdrawal reflex
What is a synaptic knob located? at the end of an axon
What are the two neurotransmitters that are considered natural pain kills? endorphins and enkephalins
What are the three parts of the brain stem? Medulla Oblongata, Pons, Midbrain
What are the three major structures of the diencephalon? hypothalamus, thalamus, and pineal gland
What are the ridges of the brain called? gyri
What are the grooves of the brain called? sulci
What are the functions of the medulla oblongata? cardiac, respiratory, and vasomotor control center
What are the functions of the pons? influences respiration
What are the function of the Midbrain? relay for visual and auditory impulses
What are the functions of the cerebellum? muscle coordination, equilibrium, and posture
What are the functions of the Hypothalamus? regulation of body temperature, water balance, sleep cycle, appetite
What are the functions of the thalamus? emotions and alerting
What are the functions of the pineal gland? Adjusts output of melatonin, to keep the bodys internal clock on time
What are the functions of the cerebrum? sensory perception, emotions, willed movements, consciousness, and memory
What is the tract called that carries impulses from the spinal cord to the brain? Ascending tracts
What is the tract called that carries impulses from the brain to the spinal cord? Descending tracts
What are the three layers of spinal meninges? dura mater, pia mater, and arachnoid mater
Where does cerebrospinal fluid form? the choroid plexus
How many spinal nerves are there? 31
What is the limbic system called? emotional brain
Created by: mhtgroup



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