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Janssen Nervous Syst
Mrs. Janssen's Nervous System Test
| Question | Answer |
|---|---|
| What kind of neurons carry impulses toward the CNS? | afferent |
| What kind of neurons carry impulses away from the CNS? | efferent |
| What portion of the brain includes the medulla, pons & midbrain? | brain stem |
| What part of the nervous system includes the brain and spinal cord? | CNS |
| What is the largest part of the brain? | cerebrum |
| What neuron process carries impulses away from the nerve cell body? | axon |
| What is the liquid that surrounds the CNS? | cerebrospinal fluid |
| What neuron process carries impulses toward the nerve cell body? | dendrite |
| What is a group of nerve cell bodies in the PNS called? | ganglion |
| What is the area of the CNS that contains unmyelinated nerve fibers called? | gray matter |
| What is the area of the CNS that contains myelinated nerve fibers called? | white matter |
| What are the membranes that cover the brain & spinal cord called? | meninges |
| What is the covering that surrounds nerve fibers called? | myelin sheath |
| What are nerve cells called? | neurons |
| What is a network of interlacing nerves called? | plexus |
| What is an autonomic reaction to a stimulus called? | reflex |
| What is the space between neurons called? | synapse |
| What are the two great controlling systems of the body? | nervous & endocrine |
| What are the two structural divisions of the nervous system? | CNS & PNS |
| What are the two functional divisions of the nervous system? | voluntary & autonomic |
| What two characteristics do neurons have that make them nervous? | irritability & conductivity |
| What do Schwann cells form? | myelin sheaths |
| What do pain receptors sense? | pain |
| What do Pacinian corpuscles sense? | deep pressure |
| What do Meissner's corpuscles sense? | light pressure |
| What do Krause's end-bulbs sense? | cold |
| What do Ruffini's corpuscles sense? | heat |
| What is the minimum number of components of a reflex arc? | 4 |
| What is the major function of the pons? | control respiratory rhythm |
| Which part of the brain controls the respiratory, blood pressure & cardiac centers? | medulla |
| What is the relay station for sensory impulses? | thalamus |
| What is the autonomic clearing center? | hypothalamus |
| What part of the brain coordinates skeletal muscle activity, balance & equilibrium? | cerebellum |
| What structure provides passage for cerebrospinal fluid? | membranes |
| What structure cushions the brain? | cerebrospinal fluid |
| What structure encloses the brain? | skull |
| What structure prevents harmful substances from entering the brain? | capillaries |
| How many pairs of spinal nerves are there? | 31 |
| What region of the body is served by the dorsal rami of the spinal cord? | posterior body trunk |
| Which division of the autonomic nervous system is known as the housekeeping system? | parasympathetic |
| Which division of the autonomic nervous system is known as the fight or flight system? | sympathetic |
| Which nerve plexus serves the diaphragm, shoulder, & neck? | cervical |
| Which nerve plexus serves the arms? | brachial |
| Which nerve plexus serves the lower abdomen, butt, anterior thighs & leg? | lumbar |
| Which nerve plexus serves the lower posterior trunk, posterior thigh & leg? | sacral |
| What is age related mental deterioration called? | senility |
| What is the condition in which excess CSF fluid can't drain and accumulates in the brain? | hydrocephalus |
| What is failure of the cerebrum to develop called? | anencephaly |
| What is brain damage that results in poor control & spasticity of voluntary muscles called? | cerebral palsy |
| What is a birth defect in which the vertebrae form incompletely? | spina bifida |
| Which lobe of the brain controls speech and somatic senses? | parietal |
| Which lobe of the brain controls vision? | occipital |
| Which lobe of the brain controls language, speech, & intellect? | frontal |
| Which lobe of the brain controls hearing and memory? | temporal |
| What is Broca's area responsible for controlling? | speech |
| What connects the two cerebral hemispheres? | corpus callosum |
| What are the elevated ridges of tissue in the cerebral hemispheres called? | gyri |
| What are the shallow grooves in the cerebral hemisphere called? | sulci |
| What is a slight brain injury that may cause dizziness or brief loss of consciousness? | concussion |
| What is a more severe brain injury that has marked tissue destruction? | contusion |
| What is low blood pressure resulting from a change in position called? | orthostatic hypotension |
| What does the olfactory nerve control? | smell |
| What does the optic nerve control? | vision |
| What does the oculomotor nerve control? | Eyeball and eye muscle movement |
| What does the trochlear nerve control? | one superior oblique eye muscle |
| What does the trigeminal nerve control? | Chewing muscles, sensory impulses from face |
| What does the abducens nerve control? | lateral rectus muscle of eye |
| What does the facial nerve control? | Facial expression, lacrimal & salivary glands |
| What does the vestibulocochlear nerve control? | balance and hearing |
| What does the glossopharyngeal nerve control? | Swallowing, saliva production, taste buds |
| What does the vagus nerve control? | Carries impulses to pharynx, larynx, viscera |
| What does the accessory nerve control? | neck and shoulder muscles |
| What does the hypoglossal nerve control? | Tongue movement |