neuro lec 2 Flashcards
order the following from having the greatest to the least number of neurons:
dog, cat, lobster, human, fruit fly, octopus, whales, elephants
- whales/elephants?
- human
- octopus
- dog
- cat
- fruit fly
- lobster
is the cerebral cortex white or grey matter?
grey matter
why is gyrification important?
allows for a large surface in a small skull
T or F: sulci are functional borders
false – they are just wrinkles
what are the 3 sulci/fissures we need to know?
- longitudinal fissure (separates the 2 hemispheres)
- central/rolandic sulcus
- lateral/sylvian sulcus
what are the 2 “hidden” lobes of the brain?
- limbic (“spread the cheeks”)
- insula
what composes the limbic lobe? (5) what is its main function?
- cingulate gyrus
- hippocampus
- parahippocampal gyrus, uncus, subcallosal gyrus
- “caveman functions” like emotional drive + survival instinct
what are the main functions of the insular lobe? (2)
- sensorimotor functions (apraxia)
- limbic functions
parts of corpus callosum? (5)
- anterior commissure
- genu (knee)
- body
- splenium
- fornix
what do the lateral ventricles contain?
CSF
which lobes are the precuneus and cuneus associated with?
- precuneus = basically parietal lobe
- cuneus = basically occipital lobe
what is the hypophysis?
pituitary gland
function of the mammillary bodies?
memory
function of the parahippocampal gyrus?
memory
function of the uncus?
smell/memory/emotion