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60 Cards in this Set

  • Front
  • Back
These are glial cells that line the ventricular system and line choroid plexus
Ependymal cells
Ependymal cells help produce
cerebral spinal fluid
Microglia
are glial cells that migrate to damaged areas and help dispose pathogens, serving as phagocytes
These glial cells myelinate central axons
oligodendrocytes
Astrocytes help regulate
microenvironment in response to brain injury
Name the three sensory cranial nerves
CN 1 Olfactory assists with smell
CN 2 Optic assists with vision
CN 8 Vestibulocochlear assists with hearing and regulating balance
List the five Motor Cranial Nerves
CN 3 Oculomotor
CN 4 Trochlear
CN 6 Abducens
CN 11 Accessory
CN 12 Hypoglossal
List the four mixed Cranial Nerves
CN 5 Trigeminal
CN 7 Facial
CN 9 Glossopharyngeal
CN 10 Vagus
The vertebral arteries changes its names at the level of the pons and becomes the
basilar artery
basilar artery becomes the what at the level of the cerebrum
posterior cerebral artery
obstruction of the right carotid artery causes weakness and loss of sensation on which side of the body
left side
Blockage of vertebral artery distribution affects circulation to which brain areas?

What symptoms arise?
occipital lobe (visual area), brain stem, and cerebellum

dizziness and may result in loss of vision
the internal carotid artery divides into what two arteries
anterior and middle cerebral arteries
occlusion of the anterior cerebral artery can result in loss of
strength and sensation in the lower part of the body
occlusion of the middle cerebral artery
affects strength and sensation in the upper regions of the body
occlusion of the basilar artery at the junction of the two posterior cerebral arteries will result in
total blindness since the posterior cerebral arteries supply the visual cortex
occlusion of the vertebral artery may result in
little or no deficit because of the remaining blood supply from the opposite vertebral artery
CSF flows from the two lateral ventricles through the two
interventricular foramina (holes) or Foramen of Monro
CSF from the third ventricle passes through the what before entering the fourth ventricle
aqueduct of Sylvius or cerebral aqueduct
CSF passes outside of the brain through three openings
foramen of Magendie
and two lateral foramena of Luschka
an obstruction of CSF causes
hydrocephalus
Epidural hemorrhage can result from a
skull fracture
subdural hemorrhage can result from
tearing the bridging veins that connect the brain and dural sinuses
the internal capsule is a funnel of motor and sensory fibers that converge upon the brain stem from where
cerebral cortex
a lesion in the spinothalamic tract results
in the loss of pain temperature sensation contralaterally
a lesion in the sensory area of the cerebral cortex may result in
contralateral deficit of all the above sensory modalities.
cerebellar lesions tend to produce
ataxia and stumbling on same side of lesion in hemisphere, lesion in vermis associated with trunk/ postural dysfunction
cerebral lesions result in
contralateral deficits
upper motor neuron defects (ones that connect the cerebral cortex and anterior horn)
spastic paralysis, no significant muscle atrophy, fasciculations and fibrillations not present, hyperreflexia, Babinski reflex may be present
Lower motor neuron defect (beyond the level of UMN, and peripheral nerve neurons)
flaccid paralysis, significant atrophy, fasciculations and fibrillations present, hyporeflexia, Babinski reflex not present
Cranial Nerve 7 or facial
cries when sad, spits when angry
(lacrimates and salivates)

master of facial expression
in an upper motor neuronal lesion only the area of the face below the eyes is paralyzed because of
bilateral innervation of the upper face by both hemispheres
Bell's palsy (nerve 7 palsy of unknown etiology) results in
difficulty closing the eye
may result in "crocodile tears', with patient having tears when eating
pseudobulbar palsy
difficulty with facial expression, motion of tongue, chewing, swallowing, speech and breathing, inappropriate laughing and crying.
lesion of the medial longitudinal fasciculus bilaterally would produce
decreased ability for eyes to look medially
a repetitive, tremor-like oscillating movement of the eyes
nystagmus
Vertical Nystagmus is always abnormal and signals a disturbance in
brain stem function
Doll's eye Phenomenon
turn head suddenly the eyes lag behind in normal individuals with no brain stem damage
master control for the autonomic system
hypothalamus
appetite, body temperature, sexual functioning
This circuit is believed to be involved in the emotional content of conscious thought
Papez Circuit
Papez Circuit provides intercommunicaiton with these structures
hippocampus, hypothalamus, thalamus and cerebral cortex
Korsakoff's syndrome
occurs in alcoholics, memory loss, confusion and confabulation associated with lesions in the mammillary bodies and associated areas
a region of the brain that is a sensory relay and integrative center connecting the cerebral cortex, basal ganglia, hypothalamus and brain stem
thalamus
thalamic pain syndrome
vague sense of pain without localizing it
cerebellar disorders have which symptoms
ataxia: awkward posture and gait, fall to the same side of lesion, poor coordination, dysmetria which is overshooting your reach and dysdiadochokinesia (inability to do rapid alternating movements)
These symptoms implicate which brain region...
decreased tendon reflexes, asthenia and tremor
cerebellar region
The following disorders (Parkinsonism, Chorea, Athetosis and Hemiballismus) affect which brain region:
Basal Ganglia Disorders
Parkinsonism
rigidity, slowness, resting tremor, shuffling gait, mask-like facies, associated with degeneration of basal ganglia and substantia nigra, associated with low dopamine levels
Chorea
sudden jerky and purposeless movements such as Huntington's chorea (inherited disorder) or Sydenham's chorea (after rheumatic fever)
Athetosis
slow writhing, snake-like movements, especially of the fingers and wrists, often present in diseases of the basal ganglia, distal limbs more affected, associated with MR
Hemiballismus
a sudden wild flail-like movement of one arm
CN 10 lesion may result in
hoarseness
CN 10, 12 or 7
may have difficulty with the KLM sounds "Kuh" and "La", and "MI"
agnosias
impaired recognition of previously meaningful stimuli, the most common agnosias are visual and auditory
apraxias
complex cerebral motor disabilties
aphasias
language dysfunction
lesions in the dominant hemisphere, anterior region near the motor cortex result in what kind of aphasia
expressive aphasia
posterior lesions near the auditory cortex
receptive aphasia,
inability to understand speech
Horner's syndrome
pupillary constriction, slight ptosis and decreased sweating resulting from interruption of the sympathetic pathways to the eye.
uncus
portion of the temporal lobe concerned with sense of smell, Epileptic seizures in this area are acccompanied by unpleasant smells