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nervous_exam
nervous system
Question | Answer |
---|---|
what are the 3 functions of the nervous system | detect changes & feel sensations; initiate appropriate responses to changes; organize information for immediate use & store it for future use |
the central nervous system (aka CNS) consist of what 2 structures | brain and spinal cord |
the peripheral nervous system (aka PNS) consists of what | cranial nerves and spinal nerves |
the autonomic nervous system (aka ANS)is also part of the | PNS |
what do we call nerve cells | neurons |
what do the dendrites do | carry impulses to the cell body |
what do the axons do | carry impulses away from the cell body |
in the PNS what type of cells make up the myelin sheath | Schwann cells |
what cells make up the myelin sheath in the CNS | oligodendrocytes |
what is the difference between the myelin sheath in the CNS v. PNS | no neurolemmas because the schwann cells are missing |
are the neurolemmas on the inside or outside of the myelin sheath | outside |
there is a little space between the dendrite of one cell and the axon of another - what is this space called | synapse |
impulses have to jump the gap so what does the synapse guarantee | one way transmission |
what cells contribute to the blood brain barrier | astrocytes |
what are the 2 functions of the spinal cord | transmit impulses to & from brain; integrate spinal cord reflexes |
the spinal cord is protected from mechanical injury by what bones | vertebrae |
mixed neurons are found only in the | CNS |
CSF is formed where | choroid plexus |
where in the brain is the CSF reabsorbed | arachnoid villi |
ascending & descending tracts of the spinal cord - are they located in the white or gray matter | white matter |
cell bodies of motor neurons and in the spinal cord, neurons & interneurons are located in the white or gray matter | gray matter |
CSF (cerebral spinal fluid) is found where in the spinal cord structure | central canal |
of the 31 pairs of nerves that emerge from spinal cord, how many of the pairs are in the cervical | 8 |
how many in the thoracic | 12 |
how many in the lumbar | 5 |
how many in the sacral | 5 |
how many in the small coccygeal | 1 |
the surface of the cerebal hemisphere is called gray matter or | cerebral cortex |
in the human brain the folds of the cerebral cortex are called | gyri |
what are the convolutions called | sulci |
in what part of the lobe of the brain do you find "Broca's" motor speech area | frontal lobe |
neurons are electrically insulated by the presence of what structure | myelin sheath |
the connective tissue membrane that covers the brain and spinal cord is called | meninges |
what is the outer layer of the connective tissue called | dura mater |
what is the middle layer called | arachnoid space |
the inner layer is called | pia mater |
what area of this connective tissue membrane that covers the brain & spinal cord contains CSF | subarachnoid space |
do we continuously or intermittently form CSF | continuously |
how many pairs of cranial nerves do we have | 12 |
making up the autonomic nervous system are visceral motor neurons that go to what 3 things | cardiac muscle, smooth muscle & glands |
what are the 2 divisions of the ANS | sympathetic and parasympathetic |
when is sympathetic dominant | stressful situations |
when is parasympathetic dominant | relaxed situations |
name 2 neurotransmittors | acetylcholine & norepinephrine |
name 2 inactivators | cholinesterase & MAO |
when we perform a neurological assessment one of the 1st things we do is a | Glasgow Coma Scale |
do you find Schwann cells in the CNS | no - only in the PNS |
how would you define the term "reflex" | involuntary response to a stimulus |
what are the 5 personality disorders | paranoid, schizoid, antisocial, histrionic, narcissistic |
is autism a form of extreme hyperactivity | no |
is tourettes syndrome a condition with a person has multiple motor and vocal tics | yes |
is alzheimer disease the most frequent cause of dementia in people over the age of 65 | yes |
do bipolar pts have major mood swings of hyperactivity and depressive moments | yes |
somatoform disorders a group of disorders where a person has physical symptoms with or without an underlying cause | without |
in munchausen syndrome does a person simulate illness to gain attention | yes |
in sleep apnea does a person have problems sleeping | no |