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Brainstem & basics neuro

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robbypowell's version from 2015-07-07 02:57

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Question Answer
What part of the brain relates to subconscious movement and function?Cerebellum
What are the components of the Diencephalon?Thalamus & Hypothalamus (also epithalamus & sub thalamus)
What are the Components of the Brain stem?Midbrain, Pons, Medulla
What are the 3 layers of Meninges from out to in?Dura, Arachnoid & Pia Mater
What Meningeal Layer is tough & continuous with the Periosteum?DURA Mater
What Meningeal Layer has a "spider-web" appearance?Arachnoid Mater
What Meningeal Layer is invisible to the naked eye?Pia Mater
Where does CSF come from?Choroid Plexuses on Ventricle walls (ependymal cells)
What space does CSF circulate in?SUBARACHNOID space
What occupies Subdural Space?SINUSES & Veins
How does CSF travel from SUBARACHNOID to SubDURAL space?Arachnoid Villi (aka Arachnoid Granulations)
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Ventricles

What are the ventricles of..
Question Answer
The Rt & Lt Cerebral HemispheresFIRST & SECOND Ventricles
cerebellum/telencephalonFIRST & SECOND Ventricles
hindbrain/rhombencephalon4th Ventricle
diencephalon3rd Ventricle
mid brainCerebral Aqueduct (of Sylvius)
Spinal Cord & lower MedullaCentral Canal
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Brain stem

Question Answer
4 main functional components of brain stem1. CN NUCLEI (motor and sensory) 2. Sensory pathways (dorsal and ascending) 3. Motor pathways (ventral and descending) 4. Cerebellar Tracts (afferent & efferent)
What is the most caudal portion of the brainstem?Medulla
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Medulla

Question Answer
What important feature can be seen on the Ventral Aspect of the Medulla?PYRAMIDAL tract (and Decussation)
What 2 important feature can be seen on the Lateral Aspect of the Medulla (from ventral view)?OLIVE & INFERIOR cerebellar peduncle
What sulcus divides the Olive and Inferior cerebellar peduncle?DORSO-LATERAL Fissure
What CN's Exit the Dorsolateral Fissure of the Medulla?9, 10, 11
What sulcus separates the Pyramidal tract & Olive?Ventrolateral fissure (or sulcus)
What CN exits the ventrolateral fissure of the Medulla?12 (Hypoglossal)
What two tubercles can be seen on the Dorsal portion of the closed medulla (lower 1/2)?Gracile (medial) & Cuneate (lateral to Gracile)
Which Medullary feature is associated with PROPRIOCEPTIVE tracts from the lower half of the body, and where is this feature located?GRACILE tubercle, located on Medial part of DORSAL Closed Medulla
Which Medullary feature is associated with PROPRIOCEPTIVE tracts from the upper half of the body, and where is this feature located?CUNEATUS tubercle, located on Dorsal Closed MEDULLA (just lateral to Gracile Tubercle)
What is the "floor of the 4th ventricle"?Open Medulla (superior half)
Where is the Inferior Fovea found?Dorsal Open Medulla (within floor of 4th ventricle)
What 3 Trigons are associated with the INFERIOR FOVEA?(Dorsal Open Medulla) Medial (hypoglossal), Intermediate (Dorsal Nucleus of VAGUS) , Lateral (VESTIBULAR: Inferior & medial Vestib Nuclei)
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CN Nuclei Columsn

Question Answer
What are the 3 Motor Columns?General Somatic Efferent (GSE), Branchial Motor (Special Visceral Efferent), Parasympathetic (General Visceral Efferent)
What are the 3 Sensory Columns?Visceral Afferent (GVA/SVA) Special Sensory Afferent (SSA, Vestibulocochlear) & General Sensory Afferent (nuclei of 5 w/ contributions from 7,9, 10)
Nuclei of which cranial nerves are found in the Midbrain?3 & 4 MOTOR; 5 (only mesencephalic nucleus) (3: Oculomotor Complex, Edinger West Phal; 4: Trochlear Nucleus)
Nuclei of which cranial nerves are found in the Pons?5, 6, 7 8
Nuclei of which cranial nerves are found in the Medulla?9, 10, 11, 12 (11 may only be in cervical spinal cord)
What Nuclei are in the GSE column?Midbrain, 3 & 4; Pons, 6; Medulla, & 12
What Nuclei are in the GVE column?Midbrain, 3; Pons, 7; Medulla, 9 & 10
What column is associated with Parasympathetic function?General Visceral Efferent
What Nuclei are in the Special Visceral Efferent Column?5, 7, 9, 10, & 11
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