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anatomy
| Question | Answer |
|---|---|
| the autonomic nervous system consists of the | sympathetic and parasympathetic nervous systems |
| a neuron that transmits a nerve impulse toward the central nervous system is called | sensory neuron |
| the largest and most numerous type of neuroglia | astrocytes |
| which of the following is not a function of the central nervous system | all of the above are functions (integrating sensory info, evaluating info, initiating an outgoing response |
| part of the nervous system that transmits impulses from the cns to the skeletal muscle | somatic nervous system |
| the myelin sheath is formed by | schwann cells |
| nissl bodies are comparable to which organelle in other cells | endoplasmic reticulum |
| along a neuron, the correct pathway for impulse conduction is | dendrite, cell body, and axon |
| a neuron that has only one axon but several dendrites | multipolar neurons |
| which is true of a reflex arc | it always consists of an afferent neuron and an efferent neuron |
| sensory neurons are usually | unipolar |
| fascicles are held together by a connective tissue layer called a | perineurium |
| gray matter in the brain and spinal cord consists primarily of | cell bodies |
| the white matter of the nervous system is made up of | myelinated fibers |
| which is true of a neuron with a resting potential | the sodium pump has moved NA to the outside of the plasma membrane |
| the first event to occur when an adequate stimulus is applied to a neuron is | some of the sodium channels at the point of stimulation open |
| which is true of an action potential | the outside of the plasma membrane is negatively charged and the inside is positively charged |
| the only ions that can diffuse across a neurons membrane when the neuron is at rest | potassium |
| during a relatively refractory period | the action potential can be initiated with a strong stimulus |
| when an impulse reaches a synapse | chemical transmitters are released |
| excitatory neurotransmitters are most likely to | initiate an action potential |
| when current leaps across an insulating myelin sheath from node to node the type of impulse conduction is called | saltatory conduction |
| which of the following is not one of the main chemical classes of neurotransmitters | triglycerides |
| neurotransmitters are released in a synapse and bind to | receptors on the postsynaptic neuron |
| a lack of this neurotransmitter in the basal ganglia is associated with parkinson disease | dopamine |
| dendrites conduct impulses | toward cell bodies |
| interneurons reside in | the cns only |
| deepest connective tissue layer of a nerve | endoneurium |
| nerves that contain mostly afferent fibers are called | sensory nerves |
| white matter in the cns consists of | myelinated nerve fibers |
| compared with the outside of the neuron, the inside has a ____ charge | negative |
| the nervous system is organized to do which of the following | detect changes in internal and external environment and evaluate changes |
| in the human nervous system most of the cells are | glia cells |
| one of the components of the blood-brain barrier is | astrocytes |
| schwann cells have a function in the peripheral nervous system that is similar to that of which cells in the cns | oligodendrocytes |
| the layer of the meninges that serves as the inner periosteum of the cranial bone is the | dura mater |
| the innermost layer of the meninges is the | pia mater |
| the main divisions of the cns are the | brain and spinal cord |
| meningitis refers to inflammation of the | meninges |
| csf is found in all of the following except | subdural space |
| there are ____ ventricles in the brain | 4 |
| csf is formed by filtration of the blood in the | choroid plexus |
| csf circulates through the ventricles, into the central canal and ___, and is absorbed back into the blood | subarachnoid space |
| if the ventral nerve root of a spinal nerve were destroyed, a person would lose | willed movement related to that pathway |
| if the dorsal root ganglia of the spinal nerve were destroyed, a person would lose | sensory perception related to that pathway |
| the brainstem does not include the | cerebellum |
| the pyramids are formed in the | medulla |
| several "vital centers" are located in the | medulla |
| the vomiting reflex is mediated by the | medulla |
| the cerebellum acts with the ____ to produce skilled movement | cerebrum |
| the part of the brain that receives impulses from the labyrinth of the ear, and thus functions in the maintenance of equilibrium is the | cerebellum |
| the part of the brain that can directly influence or inhibit the release of hormones from the pituitary is the | hypothalamus |
| which of the following is not a function of the hypothalamus | regulation of motor activity |
| audition is a function of the | temporal lobe |
| the cerebellum performs all of the following except | controls cardiac function |
| which part of the brain releases the hormone melanin | hypothalamus |
| impulses from which system play a part i arousing or alerting the cerebrum | reticular activating system |
| the areas specializing in language functions are found in the left cerebral hemisphere in | about 90% of the population |
| the part of the cerebrum associated with anger, fear, and sorrow is | limbic system |
| type of brain waves associated with deep sleep | delta |
| brain waves associated with awake and attentive | beta |
| which of the following is not a brain wave measurement | zeta |
| a lesion in the cerebral cortex might result in | motor deficits, sensory deficits, and intellectual impairment |
| the falx cerebelli separates the | two hemispheres of the cerebellum |
| the csf resides in the | subarachnoid space, ventricles of the brain, and central canal of the spinal cord |
| layer of meninges that adheres to the outer surface of the brain | pia mater |
| which of the following is a part of the brain stem | medulla oblongata |
| white matter of the cerebellum | arbor vitae |
| bodys biological clock is controlled by the | pineal body |
| part of the cerebrum integral to articulating words is | broca's area |
| corpus callosum connects the | cerebral hemispheres |
| which of the following is not an extension of the dura mater | falx callosum |
| besides protection, the csf helps regulate | co2 and ph |
| foramen magnum divides | medulla oblongata from the spinal cord |
| central section of the cerebellum is called the | arbor vitae |
| corpus callosum is composed of | commissural tracts |
| somatic senses | touch, pressure, proprioception |
| which lobe of the cerebral cortex is not involved in the language function | occipital |
| layer of meninges least likely to be involved in meningitis | dura mater |
| 2 divisions of the nervous system | cns and pns |
| the corpora quadregemina is a landmark of which part of the cns | midbrain |
| dentate nuclei are in which part of the cns | cerebellum |
| deepest groove in the cerebrum | longitudinal fissure |
| drains csf into 3 ventricle | interventricular foramen of monro |
| drains csf into 4 ventricle | cerebral aqueduct of sylvius |
| spinal cord ends at vertebra l1 in a narrow area called the | conus medullaris |
| what part of the brain can produce a hormone | pineal and hypothalamus |
| what lobe of the cerebrum cannot be seen in an exterior view | insula |
| cranial nerve that is not motor | vestibulocochlear |
| tic douloureux is a painful neuralgia of the ____ nerve | trigeminal |
| the nerve commonly called the vagus nerve is the | tenth cranial |
| cranial nerve responsible for movements of the tongue | hypoglossal |
| not a plexus of the spinal nerves | thoracic |
| which plexus contains nerves that innervate the lower part of the shoulder and the entire arm | brachial |
| the sensory cranial nerves include only the | olfactory, optic, and vestibulocochlear |
| cranial nerve that arises from both the brain and the spinal cord | accessory |
| # of spinal nerve pairs | 31 |
| spinal nerves are | motor and sensory fibers |
| a mixed nerve is one that | carries both sensory and motor fibers |
| the phrenic nerve is found in the | cervical plexus |
| the neurotransmitter in a somatic motor pathway | acetylcholine |
| the peripheral nervous system includes | only the cranial nerves, spinal nerves, and their branches |
| cranial nerve that does not have the function of eye movement | trigeminal nerve |
| tongue papillae that do not have taste buds | filiform |
| the passageway leading to the tympanic membrane | external auditory meatus |
| how many types of cones in the retina | 2 |
| the inability to focus the lens properly as we age is called | presbyopia |
| presbyopia is a condition resulting from | loss of lens elasticity |
| blood vessels are found in which part of the eye | choroid |
| part of the eye containing nervous tissue | retina |
| the semicircular canals are located in ____ planes of the body | 3 |
| the organ of corti is located in the | cochlear duct |
| not a part of the bony labyrinth | malleus |
| what part of a neuron carries an excitatory signal toward the neuron cell body | dendrite |
| which of these monitor the position and movement of torso, head, and limbs | proprioceptors |
| which of these neuroglia line the cavities within the brain and spinal cord | ependymal cells |
| which of these is a receptor for a stretch reflex | muscle spindle |
| which of these sensory receotirs reacts to deep pressure | pacinian corpuscles |
Created by:
kendravanover