Neuro Flashcards
What is the function of astrocytes?
A. Metabolic support to neurons
B. CSF production
C. Phagocytosis
D. Increase neuronal conduction velocity
A - metabolic support to neurons
What is the function of Ependymal cells?
A. Metabolic support to neurons
B. CSF production
C. Phagocytosis
D. Increase neuronal conduction velocity
B - CSF production
What is the function of Microglia?
A. Metabolic support to neurons
B. CSF production
C. Phagocytosis
D. Increase neuronal conduction velocity
C - Phagocytosis
What is the function of Oligodendrocytes?
A. Metabolic support to neurons
B. CSF production
C. Phagocytosis
D. Increase neuronal conduction velocity
D - increase neuronal conduction velocity
What forms the myelin sheath in peripheral nerves?
Schwann cells
The ____ is the functional unit of the nervous system
neuron
What forms grey matter?
Cell bodies and nonmyelinated axons
What forms white matter?
Myelinated axons
A collection of nerve cell bodies in the CNS is called a _____.
nucelus
What do glial cells do?
Support neuronal function
Name 4 glial cells.
Astrocytes, ependymal cells. oligodendrocytes, microglia
Where do most brain tumors arise from?
Glial cells
The ____ of neurons form the grey matter.
cell body
The ____ of neurons form the white matter.
axons
What is the purpose of the dendrite of a neuron?
receives and processes signal
What does the axon do?
Sends signals
What does the presynaptic terminal of neurons do?
Releases NT
What does the soma of neurons do?
Integrates signal and cellular machinery
What are the 3 types of neurons found in the CNS?
- multipolar
- pseudounipolar
- bipolar
Where are bipolar neurons located?
Retina and ear
Where are pseudounipolar neurons located?
DRG and cranial ganglion
Most of the CNS neurons are _____ neurons.
multipolar
What is known as nerve glue?
Glial cells
What is the most abundant type of glial cell?
Astrocytes
Which type of glial cell repairs neurons after neuronal injury?
Astrocytes
What type of glial cell regulates metabolic environment?
Astrocytes
_____ cells are concentrated in the roof of the 3rd and 4th ventricles and spinal canal.
Ependymal
What forms the choroid plexus?
Ependymal cells
What produces CSF?
The choroid plexus
What forms the myelin sheath in the CNS?
Oliogdendrocytes
What glial cell acts as macrophages and phagocytizes neuronal debris?
Microglia
What is the function of the occipital lobe?
A. Motor cortex
B. Vision
C. Sensation
D. Audition
B - vision
What is the function of the Frontal lobe?
A. Motor cortex
B. Vision
C. Sensation
D. Audition
A - motor cortex
What is the function of the parietal lobe?
A. Motor cortex
B. Vision
C. Sensation
D. Audition
C- sensation
What is the function of the temporal lobe?
A. Motor cortex
B. Vision
C. Sensation
D. Audition
D - audition
The brain can be divided into 4 areas:
1. _____________
2. _____________
3. _____________
4. ______________
- cerebral hemispheres
- diencephalon
- brainstem
- cerebellum
Each ______ is divided into four lobes: frontal, parietal, occipital, and temporal.
cerebral hemisphere
What contains the cerebral cortex, hippocampus, amygdala, and basal ganglia?
the cerebral hemispheres
The _____ contains the thalamus and hypothalamus.
Diencephalon
The _____ contains the midbrain, pons, medulla, and reticular activating system.
brainsteam
The cerebellum can be divided into the ______, ____, and _____.
archeocerebellum, paleocerebellum, and neocerebellum
Where is the corpus callosum located?
deep in the longitudinal fissure
What connects the 2 cerebral hemispheres of the brain?
The corpus callosum
What is the purpose of Wernicke’s area?
understanding of speech
What is the purpose Broca’s area?
Motor control of speech
Where is Broca’s area located?
The frontal area
T/F: Broca’s area is connected to Wernicke’s area via neural pathways.
True
What is the purpose of the cerebral cortex?
cognition, movement, and sensatoin
The precentral gyrus of the frontal lobe has what purpsoe?
movement
The postcentral gyrus of the parietal lobe has what purpose?
Sensation
What brain structure is for memory and learning?
Hippocampus
What part of the brain is responsible for emotion, appetite, response to pain and stressor?
Amygadala
What part of the brain controls fine control of movement?
Basal ganglia
What is the purpose of the thalamus?
acts as a relay station that directs info to various cortical structures
What is the purpose of hypothalamus?
primary neurohumoral organ
Where are the thalamus and hypothalamus located?
Diencephalon
What is the purpose of the midbrain?
Auditory and visual tracts
What is the purpose of the pons?
Autonomic integration
What is the purpose of the RAS?
controls consciousness, arousal, and sleep
What is the purpose of the medulla?
Autonomic integration
What does the archicerebellum do?
Maintain equilibrium
What does the paleocerebellum do?
regulate muscle tone
What does the neocerebellum do?
Coordinates voluntary muscle movement
Where is RAS located?
Brainstem
Which CN is MOST likely to be compressed by pituitary tumor?
A. Olfactory
B. Optic
C. Oculomotor
D. Facial
B - Optic
How many CN pairs are there?
12
CN 1 - ________
Olfactory
CN 2 - _______
Optic
CN 3 - _______
Oculomotor
CN 4 - _______
Trochlear
CN 5 - ________
Trigeminal
CN 6 - _________
Abducens
CN 7 - _________
Facial
CN 8 - ______-
Vestibulocochlear
CN 9 - _______-
Glossophrayngeal
CN 10 - ________
Vagus
CN 11 - _________
Spinal Accessory
CN 12 - _________
Hypoglossal
__________ generates excruciating neuropathic pain in the face. What nerve is associated with it?
Tic douloureux; CN 5 (Trigeminal neuraglia CN 5)
What CNs control eye movement?
CN 3, 4, and 6
Bell Palsy results from injury to what CN?
CN 7 the facial nerve
What does Bell’s palsy cause?
Ipsilateral facial paralysis
What CNs carry parasympathetic output?
CN 3, 7, 9, and 10
Sensory or Motor?
CN 1
Sensory
Sensory or Motor?
CN 2
Sensory
Sensory or Motor?
CN 3
Motor
Sensory or Motor?
CN 4
Motor
Sensory or Motor?
CN 5
Both
Sensory or Motor?
CN 6
Motor
Sensory or Motor?
CN 7
Both
Sensory or Motor?
CN 8
Sensory
Sensory or Motor?
CN 9
Both
Sensory or Motor?
CN 10
Both
Sensory or Motor?
CN 11
Motor
Sensory or Motor?
CN 12
Motor
How is the CN tested?
CN 1
Smell
How is the CN tested?
CN 2
Vision
How is the CN tested?
CN 3
Eye movement and pupil constriction
How is the CN tested?
CN 4
Eye movement
How is the CN tested?
CN 5
Somatic sensation to face and anterior 2/3 of tongue; msucles of mastication
How is the CN tested?
CN 6
eye movement
How is the CN tested?
CN 7
Facial movement (except mastication), eyelid closing, taste to anterior 2/3 of tongue
How is the CN tested?
CN 8
hearing and balance
How is the CN tested?
CN 9
Somatic sensation and taste to posterior 1/3 of tongue
How is the CN tested?
CN 10
swallowing
How is the CN tested?
CN 11
shoulder shrug
How is the CN tested?
CN 12
tongue movement
What is the pneumonic to memorize CN function?
Some Say Marry Money But My Brother Says Bad Business to Marry Money
What does the inferior oblique muscle do for eye movment?
Extorsion and elevation
What does the lateral rectus muscle do for eye movment?
Abduction
What does the superior oblique muscle do for eye movment?
Intorsion and depression
What does the superior rectus muscle do for eye movment?
Supraduction
What does the medial rectus muscle do for eye movment?
Adduction
What does the Inferior rectus muscle do for eye movment?
infraduction
What CN does inferior oblique function with?
CN 3
What CN is lateral rectus muscle associated with?
CN 6
What CN is superior oblique associated with?
CN 4
What CN is superior rectus associated with?
CN 3
What CN is medial rectus associated with?
CN 3
What CN is inferior rectus associated with?
CN 3
With the exception of the _____, all of the CN are part of the peripheral nervous system.
Optic nerve (CN 2)
What is the only CN that is surrounded by the dura?
Optic nerve CN 2
What is the mnemonic for the five branches of the facial nerve?
Two Zebras Bit My Carrot
What nerve is responsible for 75% of all parasympathetic activity?
Vagus
What are the five branches of the CN 7?
- temporal
- zygomatic
- buccal
- mandibular
- cervical
What are the 3 branches of the CN 5?
V1 - ophthalmic
V2 - Maxillary
V3 - mandibular
What muscle is associated with CN6? What movement?
Lateral rectus; abducens