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nwc predictor test
st430 A&P Nervous System
| Question | Answer |
|---|---|
| antiemetic drugs: | can affect the vomiting center and CTZ to relieve nausea and vomiting. |
| which of the following best describes the location of arachnoid villi? | protruding into the dural sinuses from the subarachnoid space. |
| what is the name of the space between the axon of one neuron and the dendrite of a second neuron? | synapse |
| the emetic center and the CTZ: | are concerned with vomiting |
| which of the following is least true of the term REM? | the key to restorative sleep is the elimination of REM |
| frontal eye fields: | perform a motor role regarding the eyes. |
| Parkinsons disease: | is caused by a deficiency of dopamine within the basal ganglia |
| which of the following describes cerebral laterlization? | right brain and let brain |
| which of the following structures bring information toward the cell body? | dendrites |
| what is the function of the ependymal cells of the choroid plexus? | form cerebrospinal fluid |
| what makes white matter "white"? | myelin |
| which is true of both the occipital and temporal lobes? both: | are cerebral lobes |
| neuroplasticity means that the brain: | is capable of changing in response to different environmental stimuli and thought processes. |
| which of the following statements about the glymphatic system is false? | it supports the function of the brain's lymphatic system. |
| with which of the following is the parietal lobe most associated? | somatosensory area |
| which branching structures carry information toward the cell body of a neuron? | dendrites |
| the neurotransmitters such as acetylcholine are stored within the: | axon terminals |
| what is the name of the first phase of the action potential that is caused by the inward movement of sodium? | depolarization |
| which of the following structures contains the precentral gyrus, broca's area, and the primary motor cortex? | frontal lobe |
| the inside of the unstimulated neuron is negative; this electrical charge is caused by the outward leak of potassium and is called | the resting membrane potential |
| myelination of the axon: | increases the speed of the nerve impulse along the axon |
| the hypothalamus: | all is applicable |
| which of the following is the convolution located on the frontal lobe just anterior to the central sulcus? | primary motor area |
| excessive opioids depress the medulla oblongata and therefore cause: | respiratory depression |
| the resting neuron: | is polarized |
| what is the name of the enzyme that destroys acetylcholine? | acetylcholinesterase |
| which of the following best describes the arachnoid matter? | meninges |
| to which of the following are the words blood-brain barrier and glia most related? | astrocytes |
| the purpose of the Na+/K+-ATpase pump in the neuronal membrane is to: | establish the Na+ and K+ gradients necessary for the development of an action potential |
| with regard to an action potential, the rapid efflux of K+: | restores the internal negativity of the neuron |
| which of the following is least true of the reticular formation? | also known as the emotional brain |
| which of the following is true of cerebrospinal fluid | circulates within the subarachnoid space and central canal |
| the postcentral gyrus: | is located in the parietal lobe |
| the medulla oblongata descends into the vertebral cavity through the: | foramen magnum |
| the repolarizing phase of the action potential: | is caused by the movement of potassium (K+) out of the cell |
| which of the following is the type of nervous tissue that conducts a nerve impulse? | neuron |
| LOC: | is an important assessment of a patient's condition |
| which of the following is a consequence of a blocked cerebral aqueduct within the fetal brain? | hydrocephalus |
| the choroid plexus | is the site where cerebrospinal fluid is formed |
| which group is incorrect? | parts of the brain stem: cerebrum, pons, medulla oblongata |
| which of the following is most related to "saltatory conduction"? | nodes of ranvier |
| the chemoreceptor trigger zone: | sends information to the emetic center in the medulla oblongata |
| opioid induced depression of the medulla oblongata is most likely to: | depress respiratory activity |
| which of the following contains cerebrospinal fluid ? | subarachnoid space |
| cerebrospinal fluid: | all is applicable |
| in which cerebral lobe is broca's area located? | frontal |
| schwann cells and oligodendrocytes: | synthesize myelin sheath of neurons in the brain, spinal cord, and peripheral nerves |
| the pituitary gland is connected to: | the hypothalamus |
| the corpus callosum: | connects the right and left cerebral hemispheres |
| the medulla oblongata descends as the | spinal cord |
| the nodes of Ranvier: | increase the speed of the action potential |
| which of the following is located within the subarachnoid space? | cerebrospinal fluid |
| the occipital lobe: | contains the primary visual cortex |
| which of the following is true of the diencephalon? | contains the thalamus and hypothalamus |
| with regard to the action potential | the efflux of K+ causes repolarization |
| there are four major areas of the brain: the cerebrum, diencephalon, brain stem, and: | cerebellum |
| which structure plays a role in personality development and emotional and behavioral expression and carries out the "executive functions"? | frontal lobe |
| which of the following best illustrates cerebral lateralization? | in most people, speech is a left hemisphere function |
| what is the name of clusters of cell bodies that are located outside the central nervous system? | ganglia |
| the "maters" | are meninges |
| which of the following structures contains more than half of the neurons in the entire brain? | cerebellum |
| the precentral gyrus: | is the primary motor area. |
| which group is incorrect? | meninges: pia mater, corpus callosum, dura mater. |
| the frontal, temporal, occipital, and parietal lobes form the: | cerebrum |
| which of the following is true of myelination? | increases the speed of the action potential along the axon |
| the medulla oblongata is: | all is applicable |
| a person is admitted to the ER following an auto accident. He has suffered a transsection of the spinal cord at C3 which statement is true? | he is ventilator dependent; all sensory and motor activity below C3 is lost |
| which structure is called the lateral, third, and fourth? | ventricles |
| the gaze center: | enables the eyes to track an object |
| the pituitary gland sits beneath the: | hypothalamus |
| the cerebral spinal fluid | cushions the brain, delivers nutrients to the brain, and removes waste. |
| broca's area: | is concerned with motor speech |
| which structure is also called the emotional brain? | limbic system |
| what is the fatty insulating material that surrounds the axons? | myelin |
| the primary somatosensory area and the primary motor area are separated by: | the central sulcus |
| the midbrain, pons, and medulla oblongata are referred to as the: | brain stem |
| what term describes the hopping of the action potential (nerve impulse) along the axon from one node ( of raniver) to the next? | saltatory conduction |
| which of the following is the middle layer of the meninges and looks like a spiderweb? | arachnoid mater |
| CSF circulates through all the following structures except: | the foramen magnum |
| the phrases of the action potential (nerve impulse) are: | depolarization and repolarization |
| the temporal lobe: | contains the primary auditory cortex |
| the depression between the convolutions of the cerebrum is called a: | sulcus |
| the blood brain barrier is a protective structure but can present a challenge when treating | an infection within the central nervous system. |
| neuroglia: | include astrocytes, oligodendrocytes, schwann cells, and ependymal cells |
| which of the following structures is most associated with "wake up"? | reticular activating system |
| what happens when the resting nerve is stimulated to threshold potential? | an action potential fires |
| which word best describes the precentral gyrus? | motor |
| neurotransmitters: | all is applicable |
| a supratentorial brain tumor is: | superior to the tentorium cerebelli |
| the emetic center: | receives information from the chemoreceptor trigger zone |
| this structure is part of the diencephalon; it regulates the anterior pituitary gland, water balance, appetite, body temperature, and the autonomic nervous system. | hypothalamus |
| depression of the reticular activating system induces: | a coma state |
| in an adult, an increased intracranial pressure may: | all is applicable |
| which of the following is not descriptive of the medulla oblongata? | "executive" function |
| endorphins are: | natural morphine like substances that can reduce anxiety and induce a sense of well being |
| which of the following is least descriptive of broca's area? | is a brain stem structure. |
| which of the following relationships is true? | precentral gyrus: motor homunculus |
| the postcentral gyrus: | performs a sensory role |
| which of the following "brain claims" is true? | the midbrain, pons, and medulla oblongata are infratentorial structures |
| which of the following is least related to basal nuclei? | bands of white matter that connect the right and left cerebral hemispheres |
| ependymal cells are: | concerned with the secretion of cerebrospinal fluid |
| what is the function of the arachnoid villi? | diffusion of CSF from the subarachnoid space into the blood within the dural sinuses |
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editsuchan
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