CH21: CEREBRUM Flashcards
Brodmann distinguished how many different areas of the cerebral cortex (p. 475)
47
Surface area of the cortex (p. 475)
4,000cm2
how many neurons are there in the cortex (p. 475)
10 to 30 billion
the cortex wherein six-layered arrangement is discerned (p. 478)
homotypical cortex
the cortex wherein six-layered arrangement is less discerned (p. 478)
heterotypical cortex
sensory stimuli terminate mainly in layers (p. 478)
II and IV
interneurons transmit impulses to adjacent superficial and deep layers to efferent neurons at layer __(p. 478)
V
neurons of this lamina send axons to the other parts of the association cortex in the same and opposite hemisphere (p. 478)
III
projection efferents send axons to subcortical structures and in the spinal cord (p. 478)
V
layer projecting mainly to the thalamus (p. 478)
VI
zones of integration (p. 478)
heteromodal cortices
parts of the frontal components of the limbic system taking part in control of respiration, bp, peristalsis and autonomic functions (p. 480)
medial orbital gyri, anterior parts of cingulate, insular gyri
connects frontal lobes to occipital lobe (p. 480)
fronto- occipital fasciculus
connects orbital part of frontal lobe to temporal lobe (p. 480)
uncinate bundle
slow, slightly imbalanced, short- stepped gait with the torso and legs not properly in phase when placed in motion (p. 482)
magnetic gait
left dorsal frontal lesion (p. 484)
hostility
right orbitofrontal lesions (p. 484)
anxiety and depression
tonotropic arrangement at temporal cortex (p. 485)
high tone- medial; low tone- lateral and rostral
superior part of temporal lobe is for what? (p. 485)
acoustic or receptive aspects of language
middle and inferior convolutions of temporal lobe for what (p. 485)
visual discrimination
ear contralateral to a temporal lesion is less efficient if the conditions of hearing are rendered more difficult (p. 486)
binaural testing
more difficult in equalizing volume of sounds that are presented to both ears in perceiving rapidly spoken numbers or different words presented in two ears (p. 486)
dichotic listening
recognition of melody and harmony (p. 486)
right auditory cortex
involve in the identification of familiar music (p. 486)
L inferior frontal region
involve in the passively listening to melodies (p. 486)
R superior temporal and occipital regions