Ch 13 the Central Nervous System - Cerebrum Anatomy Flashcards
functional areas of cerebral cortex
sensory areas, association areas, motor areas
motor areas of cerebral cortex
primary (somatic) motor cortex, premotor cortex, Broca’s area, frontal eye field
primary motor cortex
allows conscious control of precise, skilled, voluntary movements
signals muscle
motor humunculus
caricature of location and relative amounts of cortical tissue devoted to each motor function
premotor cortex
controls learned, repetitious, or patterned motor skills
involved in planning of movements
Broca’s area
motor speech areas that directs mucles of the tongue
is active as one prepares to speak
logical expansion of the motor humunculus for mouth muscles
frontal eye field
controls voluntary eye movement
logical expansion of the motor humunculus for hand movement (hand eye coordination)
sensory areas
primary somatosensory cortex
somatosensory association cortex
visual and auditory areas
olfactory, gustatory, and vestibular cortices
primary somatosensory cortex
receives information from the skin and skeletal muscles
exhibits spatial discrimination
somatosensory humunculus
caricature of relative amounts of cortical tissue devoted to each sensory function
somatosensory association cortex
integrates sensory information
forms comprehensive understanding of the stimulus
determines size, texture, and relationship of parts
visual areas
primary visual cortex - simple interpretation
visual association areas - interprets visual stimuli
analog vs 4k
auditory areas
primary auditory cortex - pitch, rhythm, volume
auditory association area - stores memory of sounds and permits perception of sounds. lets music affect moods
association areas
prefrontal cortex
language areas
general (common) interpretation area
visceral association area
prefrontal cortex
responsible for planning, complex idea, behaviors, concentration, ability to focus, emotional traits, judgement, inhibition
closely linked to limbic system
