| 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 |
mr. charles11
