Gross Anatomy: Lobes Flashcards
frontal lobe parts
primary motor area/precentral gyrus
secondary motor area/postcentral gyrus
brocas area
prefrontal cortex
where is the primary motor area located and what is the function
located: precentral gyrus (4)
controls motor movements on contralateral side of body
what areas are included in secondary motor area and what is the function
located: premotor area
planning complex movements
what is brocas area
where is it located
located: inferior frontal gyrus of left hemisphere
essential for speech production
what is function of prefrontal cortex
regulates cognitive functions such as reasoning, planning, decision-making, personality
effects of frontal lobe lesions
paralysis
brocas aphasia
difficulty with executive functions
personality changes
impulsivity
attention issues
parietal lobe parts
primary somatosensory area/postcentral gyrus
secondary somatosensory area
angular gyrus
supra marginal gyrus
where is the primary somatosensory located and what is the function?
located: postcentral gyrus
receives sensory information from body
secondary somatosensory area function
interprets tactile information, memory, and spatial orientation
angular gyrus role
semantic processing of words (reading)
supra marginal gyrus role
phonological processing of words (reading)
parietal lobe lesions
sensory loss, tactile agnosia, Alexia, agraphia
temporal lobes parts
primary auditory area
secondary auditory area
wernickes area
arcuate fasciculus
primary auditory area function
processes auditory input
secondary auditory area function
interpret sound
wernickes area location and function
located: superior temporal gyrus in left hemisphere
responsible for auditory comprehension and integrating visual and auditory stimuli
arcuate fasciculus
connects wernickes and brocas area for language processing
temporal lobe lesions
auditory perception deficits, phonemic discrimination issues, wernickes aphasia
occipital lobe parts
primary and secondary visual area
primary visual area
receive visual input
secondary visual area
relate visual info to past experiences
occipital lobe lesions
homonymous hemianopsia
visual agnosia
impaired visual memory
homonymous hemianopsia
loss of vision in half of visual fields
