100 questions
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| what is not a function of the nervous system? | it produces excretory wastes
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| The term cns refers to the | brain and spinal cord
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| ciliated cns neuroglia that play an active role in moving the cerebrspinal fluid are called | epedymal cells
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| the sheath of Schwann is also called | neurilemma
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| Bipolar neurons ar ecommonly | found in the retina of the eye
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| A neuronal circuit that concentrates or directs a large number of incomming impulses to a rather small number of neurons is callec | converging circuit
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| The part of a neuron that conducts impulses away from its cell body is called a | axon
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| The point at which an impulse fromone nerve cell is communicated to another nerve cell is the | synapse
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| What is not a function of the autonomic nervous system? | innervation of skeletal muscle
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| Collections of nerve cell bodies outside the cns are called | ganglia
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| The substance released at axon terminals to propagate a nervous impulse is called a | neurotransmitter
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| Salatory conduction is made possible by the | myelin sheath
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| the velocity of nerve impulses conduction is greatest in | heavyily mialated, large diameter fibers
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| The part of the neuron that normally receives stimulus is called | a dendrite
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| an action potential | is essential for impulse propagation
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| Schwann cellsare functionally similar to | oligodendrocytes
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| What is not true of graded potentials? | increase amplitude as they move away fromthe stimulus point
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| the arbor vitae refers to | the cerebral white matter
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| the subarachnoid space lies between what two layers of meninges?? | arachnoid and pia
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| the fissure separating the cerebral hemispheres is the | longitudinal fissure
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| An excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle is | acetylcholine
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| A neural ciruit in which a single impulse is transmitted over and over is a | reverberating circuit
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| What is not a structural feature of a neuron? | synaptic cleft
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| a neuron that has its primary function the job of connecting other neurons is called a | association neuron
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| an inhibitory postsynaptic potential is associated with | hyperpolarization
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| The hypothalmus | is the thermostat of the body since it regulates temperature
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| The frontal lobe is seperated from the temporal lobe by the | lateral sulcus
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| Brocca's area | is considered the motor speech area
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| What is not a structure of the limbic sysytem? | caudate nucleus
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| What is not part of the basal nuclei? | sustania nigra
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| The area of the cortex that is responsible for sensations of a full bladder and the fellings that your lungs are going to burst might, is prolly damage to the | viseral sensory area
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| Loss of ability to play the piano with out having any paralysis or weakness in any muscles might suggest damage to, | premotor cortex
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| Cell bodies of the sensory neurons of the spinal nerves are located in | the dorsal root ganglia of the spinal cord
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| the brain aree that activities that control the state of wakefullness or alertness of the cerebral cortex | reticular formation
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| the function of commissures is to connect | corresponding areas of the two hemispheres
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| the limbic association area of the multimodal association areas provides our | emotional impact
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| A shallow groove on the surface of the cortex is called a | sulcus
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| The cerebrospinal fluid | is formed mostly by the chroid plexuses and modified by ependymal cells
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| the brain stem consists of the | midbrain,medulla and pons
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| The primary auditory cortex is located in the | temporal lobe
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| The primary motor cortex broccas area and the premotor area are located in the | frontal lobe
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| the innermost layer of the meninges delicate and closely associated to the brain surface is the | pia matter
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| A patient has suffered a cerebral hemorrage that has caused dysfunction of the precentral gyrus of his right cerebral cortex, as a result he | cannot feel voluntarily move his left arm or leg
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| Ascending pathways in the spinal cord convey | sensory impulses
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| the pons and cerebellum develop from the embryonic secondary vesicle known as the | metencephalon
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| The suprachiasmatic nucleus is found in the | hypothalmus
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| the vital centers for the control of the heart rate respiration and the blood pressure are located in the | medulla
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| If the posterior portion of the neural tube failed to develop properly | the spinal cord may be affected.
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| a lateral tract in te spinal cord would be | rubrospinal
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| An individual accidentally transected the spinal cord between T1 and L1. This would result in | paraplegia
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| The patellar "knee jerk" reflexisan example of a | stretch reflex
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| Which of the following nerves does not arise from the brachial plexus? | phrenic
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| the three primarylevels of nuetral integration in a somatosensory system include all of the following except the | effector level
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| The posterior side of the thigh' leg and foot is served by the_______ nerve. | tibial
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| A major nerve of the lumbar plexus is the | femoral
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| After axonal injury, regeneration in peripheral nerves is guided by | Schwann cells
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| Nerves that carry impulses toward the CNS only are | efferent nerves
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| Select the correct definition | perceptual detection is the ability to detect how much stimulus is applied to the body.
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| The thickest and longest nerve of the body is found in the | sacral plexus
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| Babinski's sign is | when the great toe dorsiflexes and the other toes fan laterally
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| Irritation of a major nerve of this plexus may cause hiccups | cervical plexus
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| A simple spinal reflex goes along which of the following reflex arcs? | receptor, afferent nueron, integration center, efferent nueron, effector
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| Transduction refers to conversion of | receptor energy to stimulus energy
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| the cranial nerves that have neuralvconnections with the tongue include all except the | trochlear
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| problems in ballance may follow trauma to which nerve? | vestibulocochleaer
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| select the statement that is most correct | Ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons
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| the peripheral nervous system includes | sensory receptors
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| the circuit level of the somatosensory system delivers impulses to the appropriate level of the | cerebral cortex
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| preparing the body for the "fight or flight" response is the role of the | sympathetic nervous system
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| The parasympathetic nervous system is characterized by peripheral ganlia usually near the | organs and by short postganglionic fibers
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| The site of origin of the preganglionic fibers of the parasympatetic nervous system is the | brain stem and the sacral region of the sinal cord
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| Fibers that enter and leave the sympathetic chain without synapsing form structures called | white rami communicantes
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| sympathetic division stimulation causes | increased blood glucose, decreased GI peristalis, and increased heart rate and blood pressure
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| Emotions influence autonic reactions primarily throughintegration in the | hypothalamus
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| the vagus nerve does not innervate the | parotoid gland
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| in contarast to the somatic nervous system, the autonomic nervous sytem uses | a two efferent neuron chain
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| a drug that might be used specifically to reduce heart rate in cardiac patients could be | a beta-blocker
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| the parasympatetic ganglion that serves the eye is the | ciliary ganglion
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| which of the following is not a result of parasympathetic stimulation | dilation of the puils
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| sympathetic responses generally are widespread because | preganglionic fibers are short
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| which is not a plexus of the vagus nerve | celiac
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| the parasympathetic tone | determines normal activity of the urinary tract
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| the autonomic nervous system | is not affected by drugs
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| sympathetic fiberser leave the spinal cord in the | thoracolumbar region, and the postganglionic fibers secrete norepineephrine
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| what structure regulates the amount of light passing to the visual receptors of teh eye | iris
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| receptors for hearing are located in the | tympanic membrane
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| nerve fibers from the medial aspect of each eye | cross over to the opposite side at the chiasma
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| ordinarily it is not possible to transplant tissues from one person to another, yet corneas can be transplanted without tissue rejection. this is because the cornea | has no blood supply
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| taste buds are not found | in filiform papillae
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| dark adaptation | involves accumulation of rhodopsin
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| conscious perception of vision probably reflects activity in the | occipital lobe of the cortex
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| which pairing of terms is incorrectly related | quality: multiple frequencies
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| olfactory cells and taste buds are normally stimulated by | substances in solution
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| which of the following could not be seen as one looks into the eye with opthalmosscope | optic chiasma
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| the cells of the retina in which action potentials are generated are the | rods and cones
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| which of the following is not a characteristic of olfactory receptor cells | they are unipolar neurons
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| an essential part of the maculae involved in static equilibrium is (are) the | otoliths
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| the eye muscle that elevates and turns the eye laterally is the | inferior oblique
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| light passes through the following structures in which have | cornea,aqueous humor, len, vitreous humor
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| visible light fits between | Uv and infared
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