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Systems Pharmacology II
Motor and Sensory Cortex
12
Biology
Graduate
02/22/2012

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Term
primary motor cortex
Definition
-large pyramidal cells
-long axons
-allows precise control of voluntary movements
Term
premotor cortex
Definition
-controls learned, repetitious, or patterned motor skills
-simultaneous/sequential actions
-planning of movements that depend on sensory feedback
Term
Broca's area
Definition
-anterior to premotor area
-present in ONE hemisphere usually left
-directs muscles of tongue
-active as one prepares to speak
Term
frontal eye field
Definition
-anterior to the premotor cortex and superior to Broca's area
-controls vonluntary eye movements
Term
*somatosensory association cortex
Definition
-posterior to primary somatosensory cortex
-integrates sensory input from primary
-determines size, texture, and relationships of part of objects felt
Term
*primary somatosensory cortex
Definition
-receives sensory info from skeletal muscle, skin, joints
-capable of spatial discrimination-id of body region when stimulated
Term
visual cortex
Definition
-primary-receives info from retinas
-assiciation area-surrounds primary
-uses past visual experiences to interpret stimuli (color, form, movement)
-complex processing involves entire posterior half of hemispheres
Term
auditory cortex
Definition
-primary-interprets putch, loudness,location
-association-stores memories of sounds and permits perception of sounds
Term
olfactory cortex
Definition
-medial aspect of temporal lobes
-part of primitive rhinencephalon
-region of concious awareness of odors
Term
*gustatory cortex
Definition
-*in the insula
-within the lateral sulcus
-between temporal and frontal lobe
-perception of taste
Term
visceral sensory area
Definition
-posterior to gustatory cortex
-within insula
-conscious perception of visceral sensations (upset stomach, full bladder)
Term
*vestibular cortex
Definition
-posterior part of insula and adjacent pareital cortex
-responsible for conscious awareness of balance (position of head in space)
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