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33 Cards in this Set
- Front
- Back
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Nervous System Does What? |
Maintains Homeostasis, Faster Body Processes, Electrical Impulses, Sends messages |
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What are the two parts of the Nervous System? |
CNS and PNS |
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CNS contains what? |
Brains, Spinal Cord |
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PNS Contains What? |
31 pairs of spinal nerves, 12 cranial nerves and contains ANS (controls involuntary functions) |
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3 main parts of Neuron? |
Cell Body - protects structures and keeps cell energized and functional Dendrites - gather info, sends to cell body Axon - Protected by myelin, carries Electrical Impulses, transmits signals to other cells |
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What Happens if damage to axon or myelin sheath occurs? |
Electrical Impulses may be lost, organs, muscles may not function properly |
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(ANS) Autonomic Nervous System divided into what two systems? |
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CNS protected by what? |
Brain protected by cranium Spianal cord protected by vertebral column and extends from base of brain to 2nd lumbar vertebra |
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What are the 3 major Brain Divisions? |
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CNS 3 membranes known as meninges |
1. Dura mater 2. Arachnoid (CSF) in subarachnoid space 3. Pai mater (on brain) |
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Hydrocephalus? |
Water on brain ( too much CSF) Harmful pressure on brain |
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Multiple Sclerosis (MS) |
Body defense attacks meylin around Nerve fibers. Creates scar tissue, makes signals on nerves distorted. Loss of muscle strength |
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Spina bifida |
Birth defect (incomplete Spinal Cord) usually in lumbar area |
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Shingles |
Viral infection of nerve roots, causes rash. Same virus as Chicken pox |
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(CVA) Cerebrovascular Accident |
Stroke of brain, damage or death to tissue caused by interruption of blood |
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Sciatica |
Severe nerve pain, numbness (Radiated from buttocks) Nerve root is compressed due to herniated disk |
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Parkinson's disease |
Results in tremors, changes in speech and dimentia |
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Epilepsy |
Affecting CNS, disturbed electrical rhythms in CNS |
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Cerebral Palsy (CP) |
Affect body movement, balance, affects cerebellum |
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Myelogram |
Checks for blockage in spinal cord, use contrast media, spinal needle inserted between L3 - L4. Goes into subarachnoid space where CSF is |
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Lumbar Puncture (LP) |
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EEG ( Electroencephalogram |
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PET ( positron emission tomography) |
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Endocrine system? |
Regulates hormones in body, in charge of slow body process "cell growth", Glands which secrete chemicals |
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Pituitary Gland |
Smallest , pea sized, attached to lower surface of hypothalamus, MASTER GLAND |
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Thyroid Gland |
Largest Gland, iodine is needed in diet to function properly. Has 4 parathyroid glands |
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Adrenal Gland |
Triangular Shape on top of kidneys ( outer layer called adrenal cortex) ( Inner layer called adrenal medulla) |
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Pancreas Gland |
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Goiter |
Enlargement of Thyroid Gland, inadequate supply of thyroid hormone, becomes enlarged |
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Addison's disease |
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Diabetes |
Pancreas doesn't secrete adequate amounts of insulin |
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Type 1 vs type 2 diabetes |
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Exophthalmos |
Edema in tissues of eye sockets cause bulging of eyes. Hyperthyroidism can cause this |
