Gross Brain, Brainstem, & Spinal Cord Flashcards
What are the components of the brain?
Cerebrum/forebrain, cerebellum, and brainstem
What is gray matter made up of?
Cell bodies and dendrites
What is white matter made up of?
Axons, can be myelinated or not
What are the four prominent sulci?
Central, lateral, parietooccipital, cingulate
What is the corpus callosum?
Huge set of fiber tracts that connects the R and L sides of the brain
What does the frontal lobe control?
Execution, planning, and anticipation of motor function
What makes up the frontal lobe?
Precentral gyrus, and superior, middle, & inferior frontal gyri
Where is the primary motor cortex located?
Precentral gyrus
What are the premotor and supplementary motor areas for?
Planning and initiating voluntary movements
Where is Broca’s area located?
Opercular & triangular parts of inferior frontal gyrus (in one hemisphere)
What is Broca’s area important for?
Motor aspects of written and spoken language
What is the prefrontal cortex?
Involved with executive functions (personality, decision making, insight, foresight)
What does the parietal lobe control?
Sensory function
What makes up the parietal lobe?
Postcentral gyrus, and superior & inferior parietal lobules
Where is the primary somatosensory cortex located?
Postcentral gyrus
What does the primary somatosensory cortex do?
Controls processing of sensory (touch & proprioception) and perception
What is the inferior parietal lobe involved in?
Language comprehending
What does the parietal cortex do other than sensory function and language comprehension?
Spatial orientation & directing attention
What is the homonculus?
A map on the primary motor or somatosensory cortex, shows distribution/density of motor/sensory neurons devoted to a particular area of the body
What does the temporal lobe control?
Auditory processing
What makes up the temporal lobe?
Superior, middle, inferior temporal gyri
Where is the primary auditory cortex located?
The superior surface of the temporal lobe
What is Wernicke’s area?
Important in language comprehension
Where is Wernicke’s area located?
Superior temporal gyrus, also includes portions of supramargincal & angular gyri
What is the inferior surface of the temporal lobe involved in?
Higher-order processing of visual information. Learning & memory