Download Chapter 14 Nervous System | HEED 101 - Medical Terminology and more Quizzes Medical Sciences in PDF only on Docsity! TERM 1 CNS DEFINITION 1 central nervous system TERM 2 PNS DEFINITION 2 peripheral nervous system12 pairs cranial nerves31 pairs spinal nerves TERM 3 ANS DEFINITION 3 has 2 divisions:sympatheticparasympathetic TERM 4 sympathetic division DEFINITION 4 speed up blood pressure, heart ratefight or flight response TERM 5 parasympathetic division DEFINITION 5 decreases blood pressure, heart ratepromotes digestion TERM 6 nerve fibers DEFINITION 6 long axon (from motor neurons) or peripheral process (from sensory neuron) TERM 7 nerves DEFINITION 7 bundle of nerve fibers3 types:sensory or afferentmotor or efferentmixed TERM 8 sensory/afferent nerves DEFINITION 8 conducting info to CNS(smell, taste, pain, hot) TERM 9 motor/efferent nerves DEFINITION 9 conducting info to muscles, organs, glands TERM 10 mixed nerves DEFINITION 10 mixture of afferent/efferent fibers TERM 21 hypothalamus DEFINITION 21 produce hormones TERM 22 brainstem DEFINITION 22 midbrain, pons, medulla oblongata TERM 23 midbrain DEFINITION 23 visual reflexes, sense of hearing TERM 24 pons DEFINITION 24 connects the cerebellum and medulla to higher areas of the brain (relay center) TERM 25 medulla oblongata DEFINITION 25 connects brain to spinal cord(breathing, heartbeat, swallowing, blood pressure) TERM 26 spinal cord DEFINITION 26 extends from medulla oblongata to L1-L2functions:conduct sensory impulses to brainconduct motor impulses from brain to brainreflex center for impulses entering/leaving spinal cord w/out involvement of brain TERM 27 Cerebrospinal Fluid (CSF) DEFINITION 27 protects brain/spinal cordcan be obtained by a lumbar punctureChecks for:white/red blood cell countproteinglucose TERM 28 PNS DEFINITION 28 4 out of 12 cranial nerves pertains to eye TERM 29 optic nerve (II) DEFINITION 29 vision TERM 30 vestibulocochlear nerve (VII) DEFINITION 30 equilibrium and balancehearing TERM 31 vagus nerve (X) DEFINITION 31 longest of cranial nervesinnervates/seen in tissue of throat, heart, stomach etc.vagotomy: cut vagus nerve TERM 32 Alzheimer's disease DEFINITION 32 most common cause of dementia (out of mind)physical and mental problems TERM 33 encephalitis DEFINITION 33 inflammation of the brain itselfcan kill/disableviral or bacterial infection can cause this TERM 34 meningitis DEFINITION 34 same as encephalitis except it is inflammation of the meningescommon sign: stiff neck TERM 35 epilepsy DEFINITION 35 brain disorder involving many different seizuresmajority of cases are idiopathic (without a known cause)
