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Med term 17

TermDefinition
Spinal nerves 31 pairs of nerves connected to spinal cord
Amyloid Starch like substance the accumulates in the Alzhiemers brain
Myelin White fatty material that covers some axons and speeds elextricate conduction
Neuron Nerve cell that allows communication between body parts
Hydrocephalus Excess CSF in the brain
Multiple sclerosis Loss of myelin, sclerosis of central nervous tissue
Parkinsinism Neurons don't secrete dopamine. Characterized by tremors, muscle rigitidy, akinesia, and emotional problems
Axon Carries impulses away from the cell body
Dendrite Carries impulses toward the cell body
Brain stem Connects the brain and spinal cord; consists of the midbrain, pons, and medulla oblongata
Diencephalon Contains thalamus, hypothalamus and the pituitary gland
Ganglion Collection of cell bodies along a nerve pathway
Cerebellum In charge of voluntary muscle movements, posture, coordination, and balance
Cerebrospinal fluid Csf; made in ventricles of the brain, circulates around the brain protecting and cushioning
Reflex Simple autonomic response that requires few neurons
Arachnoid mater Middle web like layer of the meninges
Pia mater Thin vascular inner layer of the meninges attached to the brain and spinal cord
Dura mater Thick tough outer layer of the meninges
Cortic/o Cerebral cortex, outer portion
Autonomic nervous system Controls smooth muscle, cardiac muscle, and glands. Responsible for automatic responses and responses to stress. Sympathetic and parasympathetic
Neuroglia Supports and protects nervous tissue
Traumatic brain injury Cuncussion that damages the brain
Somatic nervous system Controls skeletal muscles
Peripheral nervous system Consists of nervous tissue outside the brain and the spinal cord. 12 pairs of cranial nerves and 31 pairs of spinal/peripheral nerves
Cerebrum Responsible for memory, reasoning, and abstract thinking
Myelinated tissue White matter of the nervous system
Nerve Bundles of neurons
Cerebral cortex
Neurotransmitter Chemical that transmits energy through a synapse
Unmyelinated tissue Gray matter of nervous tissue
Anuerism Weakening or dilation of a vessel in the brain. Effects of burst: paralysis, hemiplegia, hemiparesis, aphasia
Synapse Point of contact between neurons
Radicul/o Spinal nerve root
Gli/o Neuroglia
Neur/o Nervous system, nervous tissue, nerve
Mening/o Meninges
Spinal reflex Impulses do not go to the brain
Cerebrovascular accident Brain is deprived of oxygen due to occlusion in the vessels
Cerebroangiography Radiographic image of brain
Signs of stroke F-face drooping A-arms droopy/weakness S-speech slurred or confused T-time to call 911
Glioma Tumors of nonconducting support cell
Lepsy Seizure
Motor (efferent) neuron Carries impulses away from the CNS
Sensory (afferent) neuron Carries impulses toward CNS
Dopamine Responsible for mood and thought disorders, involuntary movement
Parasympathetic Returns body to normal, calms down after stress
Sympathetic Fight or flight; raises HR and respiration, stops digestion
Astrocytoma Tumor composed of astrocytes
Central nervous system Brain and spinal cord
Epilepsy Abnormal electrical activity in the brain
Gyri Raised areas of the brain
Sulci Grooves in the cerebral cortex
Serotonin Plays roles in sleep, hunger, and pleasure recognition
Endorphin Body's natural high, relieves pain
Created by: Lmadams92