Exam 1 Flashcards
Thalamus
Paired structure composed of two egg shaped nuclei. It’s separated from the Basal Ganglia by the internal capsule.
Reticular Activating System
The thalamus alerts the brain to incoming stimuli, like an early warning system
Final Common Relay
All incoming sensory information has to go through the thalamus
Physiology
The study of the functions or vital processes of an organism
Cerebral Dominance
The control of certain forms of learned behavior are localized or predominately found in one cerebral hemisphere, or in one side of the brain, or the other
Projection Fibers/Tracts
Convey impulses to and from the cerebral cortex and more remote regions of the CNS
Association Fibers/Tracts
Interconnects different regions in the same hemisphere
Commissural Fibers/Tracts
Connect an area of one cerebral hemisphere to the corresponding area in the other cerebral hemisphere
Connection Fibers/Tracts
Primary subcortical structures. Allows the area of the brain to communicate
Short Association Fibers/Tracts
Connect contiguous gyri
Long Association Fibers/Tracts
Connect more distant area within the same hemisphere
Gray Matter
Composed of cell bodies
Excitatory Impulse/Effect
Increase in stimulation. Neural impulses travel quicker, respond faster and stronger
Central Nervous System Function and Major Structures
All sensory information is flowing towards and where all motor information in transmitted out from. Brain and spinal cord
Arcuate Fasciculus
Connects speech production in the frontal lobe to the speech understanding are of the temporal lobe
uncinate fasciculus
Connects frontal and temporal lobes
cingulum
Connects the frontal and parietal lobes to the temporal lobe
Nerves
bundles or chains of neurons in the Peripheral Nervous System
Tracts
Bundles or chains of neurons in the Central Nervous System
Somatic Nervous System
Involved in the production of observable events and the environmental changes
Motor Component
Concerned with execution of bodily functions under voluntary control
Sensory Component
Receives feedback from skeletal muscles, responsible for environmental perception, and concerned with other non visceral components
Pyramidal Function Division
Responsible for initiation of voluntary motor acts