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25 Cards in this Set
- Front
- Back
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Define:Neuron
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A nerve cell
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Define: irritability
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ability to react to stimulus
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Define: Meninges
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3 layers of lining of the brain and spinal cord; dura mater, arachnoid, and pia mater
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Define: Cerebrum
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The larges part in the brain. Divided into left and Right hemispheres. Has fissures (grooves), sulci (shallower grooves), and Gyri (elevated ridges)
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Define: Cerebellum
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second largest part in the brain.
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Define: Axon
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The nerve part that carries the signal away from the celbody-nucleus and towards the terminal end branches. Covered in Myelin Sheath with Nodes of Ranvier.
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Define: Effectors and Receptors
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The receptor recieves the signal but the effector causes the action
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Define: Parapledia
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2 effected parts that cannot move
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Define: hemiplegia
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1 side that cannot move
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Define: quadriplegia
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four parts that cannot move
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Define: epilepsy
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1/200 americans suffer from this. it is a seizure disorder of the brain caused by a malfunction that causes continual waves of electrical signals through the neurons in the brain until fatigue sets in. Seizures, as a result, are spontaneous and uncontrollable, with two types:
Grand mal:Severe Petit Mal:staring/day-dreaming |
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Define: Grand Mal versus Petit Mal Seizure
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Grand Mal: Severe
Petit Mal: Staring/Day dreaming |
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Define: Hydrocephalus
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increase in SCF ventricles from a blockage of the third or fourth ventricle treated by using s shunt and usually seen at birth
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Define: CSF
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Cerebral Spinal Fluid
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Define: Dura Mater
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The outermost, thickest meninge covering the brain, closest to the cranial
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Define: Arachnoid
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weblike, middle layer
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Define: Pia Mater
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a thin, veil-like covering, closest to the brain
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Define: Autonomic Nervous System
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ANS: Peripheral and ganglia that controls involuntary action
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Function of: Brain Stem (9)
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sleep/wake center, center for hearing, vision
respirations, heart rate blood pressure, swallowing vomiting, reflex arch |
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Function of: Cerebellum (6)
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balance, muscle tone, coordination of movements, skeletal muscles, inner ear, eyes
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Function of: Cerebrum (4)
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consious thought, judgement, will power, reasoning
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What is the function of and wehre is the ANS located?
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ANS located in PNS, controls involuntary actions of organs
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Components of: CNS
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Cranial Nervous System
Brain, Spinal Cord |
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Components of PNS:
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Peripheral Nervous System:
ANS, nerves, and sensors/receptors |
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Differnce of Sympathetic and Parasympatheic Systems
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Sympathetic raises
Parasympathetic lowers |
