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100 questions
| Question | Answer |
|---|---|
| what is not a function of the nervous system? | it produces excretory wastes |
| The term cns refers to the | brain and spinal cord |
| ciliated cns neuroglia that play an active role in moving the cerebrspinal fluid are called | epedymal cells |
| the sheath of Schwann is also called | neurilemma |
| Bipolar neurons ar ecommonly | found in the retina of the eye |
| A neuronal circuit that concentrates or directs a large number of incomming impulses to a rather small number of neurons is callec | converging circuit |
| The part of a neuron that conducts impulses away from its cell body is called a | axon |
| The point at which an impulse fromone nerve cell is communicated to another nerve cell is the | synapse |
| What is not a function of the autonomic nervous system? | innervation of skeletal muscle |
| Collections of nerve cell bodies outside the cns are called | ganglia |
| The substance released at axon terminals to propagate a nervous impulse is called a | neurotransmitter |
| Salatory conduction is made possible by the | myelin sheath |
| the velocity of nerve impulses conduction is greatest in | heavyily mialated, large diameter fibers |
| The part of the neuron that normally receives stimulus is called | a dendrite |
| an action potential | is essential for impulse propagation |
| Schwann cellsare functionally similar to | oligodendrocytes |
| What is not true of graded potentials? | increase amplitude as they move away fromthe stimulus point |
| the arbor vitae refers to | the cerebral white matter |
| the subarachnoid space lies between what two layers of meninges?? | arachnoid and pia |
| the fissure separating the cerebral hemispheres is the | longitudinal fissure |
| An excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle is | acetylcholine |
| A neural ciruit in which a single impulse is transmitted over and over is a | reverberating circuit |
| What is not a structural feature of a neuron? | synaptic cleft |
| a neuron that has its primary function the job of connecting other neurons is called a | association neuron |
| an inhibitory postsynaptic potential is associated with | hyperpolarization |
| The hypothalmus | is the thermostat of the body since it regulates temperature |
| The frontal lobe is seperated from the temporal lobe by the | lateral sulcus |
| Brocca's area | is considered the motor speech area |
| What is not a structure of the limbic sysytem? | caudate nucleus |
| What is not part of the basal nuclei? | sustania nigra |
| 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 |
| Loss of ability to play the piano with out having any paralysis or weakness in any muscles might suggest damage to, | premotor cortex |
| Cell bodies of the sensory neurons of the spinal nerves are located in | the dorsal root ganglia of the spinal cord |
| the brain aree that activities that control the state of wakefullness or alertness of the cerebral cortex | reticular formation |
| the function of commissures is to connect | corresponding areas of the two hemispheres |
| the limbic association area of the multimodal association areas provides our | emotional impact |
| A shallow groove on the surface of the cortex is called a | sulcus |
| The cerebrospinal fluid | is formed mostly by the chroid plexuses and modified by ependymal cells |
| the brain stem consists of the | midbrain,medulla and pons |
| The primary auditory cortex is located in the | temporal lobe |
| The primary motor cortex broccas area and the premotor area are located in the | frontal lobe |
| the innermost layer of the meninges delicate and closely associated to the brain surface is the | pia matter |
| 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 |
| Ascending pathways in the spinal cord convey | sensory impulses |
| the pons and cerebellum develop from the embryonic secondary vesicle known as the | metencephalon |
| The suprachiasmatic nucleus is found in the | hypothalmus |
| the vital centers for the control of the heart rate respiration and the blood pressure are located in the | medulla |
| If the posterior portion of the neural tube failed to develop properly | the spinal cord may be affected. |
| a lateral tract in te spinal cord would be | rubrospinal |
| An individual accidentally transected the spinal cord between T1 and L1. This would result in | paraplegia |
| The patellar "knee jerk" reflexisan example of a | stretch reflex |
| Which of the following nerves does not arise from the brachial plexus? | phrenic |
| the three primarylevels of nuetral integration in a somatosensory system include all of the following except the | effector level |
| The posterior side of the thigh' leg and foot is served by the_______ nerve. | tibial |
| A major nerve of the lumbar plexus is the | femoral |
| After axonal injury, regeneration in peripheral nerves is guided by | Schwann cells |
| Nerves that carry impulses toward the CNS only are | efferent nerves |
| Select the correct definition | perceptual detection is the ability to detect how much stimulus is applied to the body. |
| The thickest and longest nerve of the body is found in the | sacral plexus |
| Babinski's sign is | when the great toe dorsiflexes and the other toes fan laterally |
| Irritation of a major nerve of this plexus may cause hiccups | cervical plexus |
| A simple spinal reflex goes along which of the following reflex arcs? | receptor, afferent nueron, integration center, efferent nueron, effector |
| Transduction refers to conversion of | receptor energy to stimulus energy |
| the cranial nerves that have neuralvconnections with the tongue include all except the | trochlear |
| problems in ballance may follow trauma to which nerve? | vestibulocochleaer |
| select the statement that is most correct | Ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons |
| the peripheral nervous system includes | sensory receptors |
| the circuit level of the somatosensory system delivers impulses to the appropriate level of the | cerebral cortex |
| preparing the body for the "fight or flight" response is the role of the | sympathetic nervous system |
| The parasympathetic nervous system is characterized by peripheral ganlia usually near the | organs and by short postganglionic fibers |
| 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 |
| Fibers that enter and leave the sympathetic chain without synapsing form structures called | white rami communicantes |
| sympathetic division stimulation causes | increased blood glucose, decreased GI peristalis, and increased heart rate and blood pressure |
| Emotions influence autonic reactions primarily throughintegration in the | hypothalamus |
| the vagus nerve does not innervate the | parotoid gland |
| in contarast to the somatic nervous system, the autonomic nervous sytem uses | a two efferent neuron chain |
| a drug that might be used specifically to reduce heart rate in cardiac patients could be | a beta-blocker |
| the parasympatetic ganglion that serves the eye is the | ciliary ganglion |
| which of the following is not a result of parasympathetic stimulation | dilation of the puils |
| sympathetic responses generally are widespread because | preganglionic fibers are short |
| which is not a plexus of the vagus nerve | celiac |
| the parasympathetic tone | determines normal activity of the urinary tract |
| the autonomic nervous system | is not affected by drugs |
| sympathetic fiberser leave the spinal cord in the | thoracolumbar region, and the postganglionic fibers secrete norepineephrine |
| what structure regulates the amount of light passing to the visual receptors of teh eye | iris |
| receptors for hearing are located in the | tympanic membrane |
| nerve fibers from the medial aspect of each eye | cross over to the opposite side at the chiasma |
| 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 |
| taste buds are not found | in filiform papillae |
| dark adaptation | involves accumulation of rhodopsin |
| conscious perception of vision probably reflects activity in the | occipital lobe of the cortex |
| which pairing of terms is incorrectly related | quality: multiple frequencies |
| olfactory cells and taste buds are normally stimulated by | substances in solution |
| which of the following could not be seen as one looks into the eye with opthalmosscope | optic chiasma |
| the cells of the retina in which action potentials are generated are the | rods and cones |
| which of the following is not a characteristic of olfactory receptor cells | they are unipolar neurons |
| an essential part of the maculae involved in static equilibrium is (are) the | otoliths |
| the eye muscle that elevates and turns the eye laterally is the | inferior oblique |
| light passes through the following structures in which have | cornea,aqueous humor, len, vitreous humor |
| visible light fits between | Uv and infared |
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