Chapter 13 Flashcards
Tract
collection of nerve fibers (axons) in the Central Nervous System
Basal nuclei
region located at base of brain composed of 4 clusters of neurons
Association tracts
Conduct impulses between gyri of the same hemisphere
- horizontal
- connect different parts of same hemisphere
Commissural tracts
Conduct impulses between gyri of different hemispheres
-horizontal
-connect gray matter of two hemispheres
EXAMPLE : Corpus callosum
Projection tracts
Conduct impulses between cerebrum and lower CNS regions
- vertical
- connect hemispheres with lower brain or spinal cord
Primary Somatosensory area LOCATION ?
parietal lobe in postcentral gyrus
Primary visual area: LOCATION
posterior tip of occipital lobe
Primary auditory area: LOCATION
superior part of temporal lobe near lateral cerebral sulcus
Primary Somatosensory area : FUNCTION
receive nerve impulse from somatic sensory receptor
Primary visual area: FUNCTION
Receives and perceives visual information
Primary auditory area
Receives and perceives sound information
Primary motor
LOCATION
Frontal lobe in precentral gyrus directly anterior to the central sulcus
Primary motor FUNCTION
Controls voluntary contractions of specific skeletal muscles or muscle groups on opposite side of the body
Broca’s speech area
LOCATION
Frontal lobe close to lateral central sulcus
Broca’s Speech area FUNCTION
Controls muscles of larynx, pharynx, and mouth for production of speech
Coordinates control of muscles for breathing to regulate proper flow of air
