Lec 6 External Morphology of the brain and spinal cord Flashcards
What are the 6 lobes of the cerebral cortex?
- frontal
- parietal
- occipital
- temporal
- insular
- limbic
What is the function associated with the frontal lobe of the cerebral cortex?
motor behavior
cognition
affect
What 4 structures make up the diencephalon?
- thalamus
- epithalamus
- hypothalamus
- subthalamus
What is the function associated with the parietal lobe of the cerebral cortex?
seomesthesis
equilibrium
What is the function associated with the occipital lobe of the cerebral cortex?
vision
What is the function associated with the temporal lobe of the cerebral cortex?
audition
memory
What is the function associated with the insular lobe of the cerebral cortex?
taste
What is the function associated with the limbic lobe of the cerebral cortex? [hint mneumonic]
five Fs
- Feeding
- Flleing
- Fighting
- Feeling
- Sex
What 5 major structures are part of the limbic system?
- cingulate gyrus
- hippocampus
- amygdala
- fornix
- mammillary bodies
What one sulcus and one gyrus in pariental lobe?
- postcentral gyrus
- pariet-occipital sulcus
What two gyri in frontal lobe?
- inferior frontal gyrus
- precentral gyrus
What one sulcus and one fissure in occiptal lobe?
- parieto-occipital sulcus
- calcarine fissure
What sulci/gyri in limbic lobe?
- callosal sulcus
- cigulate gyrus/sulcus
- parahippocampal gyrus
- subcallosal gyrus
Where are motor fibers located in relation to brainstem?
on the ventral aspect of the brainstem
List the cranial nerves in order. [Mneumonic]
Oh Oh Oh to touch and feel virgin girls vaginas and hymens
- Olfactory
- Optic
- Oculomotor
- Trochlear
- Trigeminal
- Abducens
- Facial
- Vestibulo-cochlera
- glossopharyngeal
- vagus
- accessory
- hypoglossal
What is function of Broca’s area?
speach production
What is function of wernicke’s area
speach comprehension
What is function of heschl’s gyri
auditory cortex
What is function of the insular lobe?
gustatory cortex
What is significant about the pyramidal decussation?
marks the transition from brainstem to spinal cord
What cranial nerves emerge from the level of the midbrain?
- CN III and IV [oculomotor + trochlear]
What is the function of the superior colliculus of the midbrain?
- eye movement
What is the function of the inferior colliculus of the midbrain?
- auditory system
What is the function of the periaqueductal gray [PAG] area of the midbrain?
pain perception and processing
Which cranial nerves emerge from the level of the pons?
- CN V, VI, VII, VIII
Where is the 4th ventricle located?
- in the pons and upper medulla
Where does CN II exit?
the interpeduncular fossa
Which cranial nerves exit the level of the upper medulla?
- CN IX, X, XI
Which cranial nerves exit the level of the lower medulla?
- CN XIII
Where are the two spinal cord enlargements?
cervical = C5-C8 lumbosacral = L3-S2
