Exam 1 material cont. Flashcards
Terms: contralateral
other side
Term: ipsilateral
same side
term: hemiparesis
reduced function on half of body
term: hemiplegic
no function on half of body
term: paraplegic
no function in arms or legs
term: quadriplegic
no function in both arms and legs
Lateral corticospinal tract
does voluntary movement
***Major motor pathway
Anterior corticospinal tract
does postural control
***Major motor pathway
Rubrospinal tract
does flexor posture of upper limbs
***Major motor pathway
Vestibulospinal tract
does balance
***Major motor pathway
Reticulospinal tract
does automatic gait/posture movements
***Major motor pathway
Tectospinal tract
possibly coordinates eye/body movement
***Major motor pathway
Cerebral cortex (7 areas/things it does)
1) primary motor cortex (direct stim lower motor neurons)
2) premotor cortex (involved in planning and selecting movement)
3) supplemental motor area (involved in planning internally-cued movement)
4) somatotopic organization
- medial/superior: legs
- dorsal: hands/arms
- lateral: face
5) controls contralateral body
6) controls large groups of muscles
7) hands/face are in different vascular distribution from legs
White matter pathways (4)
1) corona radiata
- occasionally damaged in surgery/stroke
2) internal capsule
- fibers spatially close together
- possible to hit both arms and legs simultaneously
3) cerebral peduncles
4) somatotopic orgainzation
- lateral: legs
- medial: face/arms
Corticobulbar tract path
1) terminates in brainstem nuclei
2) controls motor movement to face
3) mostly bilateral innervation
4) facial nucleus (facial motor control)
- upper face = bilateral innervation
- lower face =
- -unilateral contralateral innervation
- - fibers cross in pons before facial nucleus