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Nervous System

Olfactory sense of smell
Optic vision
Oculomotor movement of eyes and eyelids
Trochlear movement of eyes
Trigeminal mastication
Abduces eye movement
Facial facial expressions
Vestibulocochlear hearing and equilibrium
Glossopharyngeal swallowing and taste
Vagus autonomic motor
Accessory sternocleidomastoid
Hypoglossal tongue
Alzheimer disease progressive dementia
Bell Palsy one side of the face
Cerebrovascular accident (CVA) most common brain disorder
Shingles caused by varicella-zoster virus
Parkinson Disease tremors
Meningitis acute inflammation
Hydrocephalus obstruction in the normal flow of cerebrospinal fluid
Nervous system CNS and PNS
Ganglia knots of nerve call bodies
Afferent Division (sensory) transmits impulses from peripheral organs to the CNS
Efferent Division (motor) transmits impulses from the CNS out to the peripheral organs to cause an effect or action
Neuron transmits impulses
Neuroglia nerve glue, no nerve impulses , it supports, nourish, and protect
Three parts of the neurons cell body, one or more dendrites, and a single axon
Myelin Sheath white, fatty substance that surrounds an axon
Grey Matter Unmyelinated fibers
Nodes of Ranvier unmyelinated regions between the myelin segments
Schwann cells in the PNS this produces myelin
Neurilemma covering of schwann cells , plays a role in regeneration of nerve fibers
Oligodrendrocytes In the CNS this produces Myelin
Synapse communication between two neurons
Neurotransmitter chemical
Reflex an automatic involuntary response to some change, coughing, sneezing, and reaction to painful stimuli
CNS consists of brain and spinal cord
Meninges Three Layers Dura Mater, Arachnoid, and Pia Mater
Dura Mater characteristics though, white fibrous connective tissue
Arachnoid resembles cobwebs
Subarachnoid space filled with CSF and contains blood vessels
Pia Mater tightly bound to the surface of the brain and spinal cord
Cerebrum largest portion of the brain
Longitudinal fissure divides the brain into two cerebral hemisphere
Corpus Callosum arching band of white fibers
Cerebral cortex outer region of cerebrum, its grey matter makes us HUMAN
White Matter Myelinated nerve fibers that form communication pathways in the cerebrum
Diencephalon Thalamus, Hypothalamus, and Pineal gland
Thalamus channels impulses in cortex, discrimination, localization, and interpretation
Hypothalamus homeostasis; regulates many visceral activities
Pineal gland puberty , biological clock
Brain Stems three parts Midbrain, Pons, and Medulla Oblangata
Medulla Oblangata 3 Vital centers Cardiac center, Vasomotor center, Respiratory center
Cardiac center heart rate
Vasomotor center blood pressure
Respiratory center regulates rate, rhythm, and depth of breathing
Cerebellum coordination, posture, and balance the motor area of the brain
Ventricles fluid-filled cavities in the brain
Spinal cord extends from the foramen magnum at base of skull to the first lumbar
Ascending tracts pathways that carry sensory impulses from body parts to the brain
PNS divides into Somatic nervous system and Autonomic nervous system
Sensory nerves afferent fiber
Motor nerves efferent fibers
Mixed nerves both efferent and afferent fibers
Cranial nerves 12 pairs
Spinal nerves 31 pairs
Autonomic Nervous System Two parts Sympathetic division and Parasympathetic division
Sympathetic Division fight-or-flight
Parasympathetic Division ordinary relaxed conditions, brings body back to normal state after emergency
Created by: ShawnaGreen
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