CH. 2- Overview/Neuroanatomy Flashcards
Motor speech disorder
speech disorders resulting from neurologic impairment that affects planning, programming, control, or execution of speech
Dysarthria
- impacts any stage
- not planned or unexpected
- alterations in speed, force, range, accuracy, coordination of movements requried
- disorder of movement
Apraxia of speech
- impacts planning & programming
- higher level functioning
- impairment of position of musculature (sequencing muscle movements)
- articulatory
primary motor cortex
- UMN originates from this area
- located in frontal lobe
- initiate and control movements
primary sensory cortex
- processes sensory info from body
- general sensory path
superior temporal gyrus
- located in temporal lobe
- auditory processing
- S+L comprehension
- social cognition
- emotional perception
premotor cortex
- located in frontal lobe
- motor control & planning
inferior temporal gyrus
- located in frontal lobe
- cognitive functions
supra marginal gyrus
- located in parietal lobe
- cognitive & sensory functions
Structures/Muscles innervated by CN VII (Facial)
- muscles of mastication
- mylohyoid
- anterior belly of digastric
- tensor tympani
- tensor veli palatini
brainstem location of nuclei for Facial Nerve VII
pons
UMN/LMN pathways
responsible for direct execution of movement
control circuits
regulate and refine movement
Pathway of UMN
- originiates in primary motor cortex, but also supplementary motor area & somatosensory association area
- cortex to brainstem/spinal cord to indirect/direct pathway
direct pathway UMN
aka pyramidal system
- motor cortex to medulla to corticobulbar or corticospinal to LMN (spinal)
- voluntary skilled movements
Pathway of LMN
- recieves signals from UMN, exit the brainstem/spinal cord, travel to muscles (produce movement)
- integrated activity of LMN result in movement
indirect pathway UMN
aka extrapyramidal system
- motor cortex to red nucleus/reticular nuclei, to LMN (spinal)
- makes connections
- modulates posture, tone, movements