CSD 431 - EXAM 1 QUESTIONS WITH
COMPLETE ANSWERS
Hypothalamus - Answer-important for regulating body temp, thirst, hunger, etc
Thalamus - Answer-sensory relay -
- visual
-auditory
- tactile
- proprioceptive
Basal Ganglia - Answer-collection of structures that create circuits with various areas of
the cortex and sub-cortical structures
-both parkinson's and huntington's are function of damage to this area -- they are
complete opposite
- supports actions of motor control
Cerebellum functions - Answer-- creates multiple circuits with cortex
- involved in coordinated movement
-involved in complex movement and sequencing
- involved in timing with outside stimulus
Cerebral Cortex - Answer-- 4-6mm layer of gray matter
-Gray Matter - mostly cell bodies, dendrites, non-myelinated axons
- White matter - mostly myelinated axons
Cortical Fissures - Answer-- longitudinal fissure
- central sulcus
- lateral (sylvian) fissure
- transverse fissure
Longitudinal Fissure - Answer-divides the two hemispheres
Central Sulcus - Answer-- divides each cerebral hemisphere into anterior and posterior
regions and ends at the lateral fissure
- about 2cm deep
- separates the primary motor cortex from the primary somatosensory
Lateral (Sylvian) fissure - Answer-- courses along the side of the cerebrum
- separates the frontal and temporal lobes
- extends partially between the parietal and temporal lobes
Transverse fissure - Answer-separates cerebrum from cerebellum
, Left Hemisphere - Answer--- for most people -- dominant hemisphere for language
processing
- processes visual, auditory, and somatosensory information from the right side of the
body
- interacts with the right hemisphere mostly via the corpus callosum
Corpus Callosum - Answer-the large band of neural fibers connecting the two brain
hemispheres and carrying messages between them
Right Hemisphere - Answer-- involved in language processing, but not usually dominant
processes visual, auditory, and somatosensory information from the left side of the body
Parietal Lobe - Answer--supramarginal gyrus
- angular gyrus
Frontal Lobe - Answer-plays important role in:
- memory formation
- emotions
- reasoning
- personality
Temporal Lobe - Answer-A region of the cerebral cortex responsible for hearing and
language.
- wernickes's area - language
Connective Pathway TRACTS - Answer-- association tract
- commissural tracts (commissure)
-projection tracts
Association Tracts - Answer-connects different regions within the same hemisphere
Commissural Tracts (commisure) - Answer-cross from one cerebral hemisphere to the
other
Projection Tracts - Answer-extends vertically between higher and lower brain structures
Tract or fasciculus - Answer-collection of nerve fibers that share the same common
origin in the CNS
Blood brain barrier - Answer--- has to do with glial cells
- tighter walls in the head and harder for stuff to get to brain
(the brain can not contract the common cold)
COMPLETE ANSWERS
Hypothalamus - Answer-important for regulating body temp, thirst, hunger, etc
Thalamus - Answer-sensory relay -
- visual
-auditory
- tactile
- proprioceptive
Basal Ganglia - Answer-collection of structures that create circuits with various areas of
the cortex and sub-cortical structures
-both parkinson's and huntington's are function of damage to this area -- they are
complete opposite
- supports actions of motor control
Cerebellum functions - Answer-- creates multiple circuits with cortex
- involved in coordinated movement
-involved in complex movement and sequencing
- involved in timing with outside stimulus
Cerebral Cortex - Answer-- 4-6mm layer of gray matter
-Gray Matter - mostly cell bodies, dendrites, non-myelinated axons
- White matter - mostly myelinated axons
Cortical Fissures - Answer-- longitudinal fissure
- central sulcus
- lateral (sylvian) fissure
- transverse fissure
Longitudinal Fissure - Answer-divides the two hemispheres
Central Sulcus - Answer-- divides each cerebral hemisphere into anterior and posterior
regions and ends at the lateral fissure
- about 2cm deep
- separates the primary motor cortex from the primary somatosensory
Lateral (Sylvian) fissure - Answer-- courses along the side of the cerebrum
- separates the frontal and temporal lobes
- extends partially between the parietal and temporal lobes
Transverse fissure - Answer-separates cerebrum from cerebellum
, Left Hemisphere - Answer--- for most people -- dominant hemisphere for language
processing
- processes visual, auditory, and somatosensory information from the right side of the
body
- interacts with the right hemisphere mostly via the corpus callosum
Corpus Callosum - Answer-the large band of neural fibers connecting the two brain
hemispheres and carrying messages between them
Right Hemisphere - Answer-- involved in language processing, but not usually dominant
processes visual, auditory, and somatosensory information from the left side of the body
Parietal Lobe - Answer--supramarginal gyrus
- angular gyrus
Frontal Lobe - Answer-plays important role in:
- memory formation
- emotions
- reasoning
- personality
Temporal Lobe - Answer-A region of the cerebral cortex responsible for hearing and
language.
- wernickes's area - language
Connective Pathway TRACTS - Answer-- association tract
- commissural tracts (commissure)
-projection tracts
Association Tracts - Answer-connects different regions within the same hemisphere
Commissural Tracts (commisure) - Answer-cross from one cerebral hemisphere to the
other
Projection Tracts - Answer-extends vertically between higher and lower brain structures
Tract or fasciculus - Answer-collection of nerve fibers that share the same common
origin in the CNS
Blood brain barrier - Answer--- has to do with glial cells
- tighter walls in the head and harder for stuff to get to brain
(the brain can not contract the common cold)
