Paralysis

Question 1

Common neurologic sign that can be seen in many neurologic diseases

Answer 1

Paralysis

Question 2

Implications of paralysis

Answer 2

No functional movements of extremities
Little to no muscle contraction
Abnormal movements

Question 3

Cause of paralysis

Answer 3

Disruption or damage to any motor pathways

Question 4

What happens when the anterior horn cell is damaged?

Answer 4

SMA

Question 5

Tracts responsible for voluntary movement

Answer 5

Corticospinal and Corticobulbar tracts

Question 6

Responsible for voluntary movement in the head

Answer 6

Corticobulbar tract

Question 7

Responsible for voluntary muscle contraction of all skeletal muscles

Answer 7

Corticospinal tract

Question 8

Tracts responsible for involuntary movements

Answer 8

Rubrospinal tract
Reticulospinal tract
Vestibulospinal tract

Question 9

Track responsible for neck muscles

Answer 9

Vestibulospinal tract

Question 10

from red nucleus; comes down
and connects to the anterior horn cell

Answer 10

Rubrospinal tract

Question 11

from reticular formation

Answer 11

Reticulospinal tract

Question 12

Origin of LMN

Answer 12

Anterior Horn Cell

Question 13

Cell body for LMN

Answer 13

Anterior Horn Cell

Question 14

Axon for LMN

Answer 14

Peripheral nn

Question 15

Where does majority of the corticospinal fibers decussate?

Answer 15

Lower medulla

Question 16

Clinical presentation of UMNL

Answer 16

Spastic
Hyperreflexia
Positive Babinski
Normal EMG/NCV

Question 17

Clinical presentation of LMNL

Answer 17

Flaccid
Hyporeflexia/Areflexia
Atrophy
Fasciculations

Question 18

What structure manages involuntary movements?

Answer 18

Brain stem

Question 19

assemble the muscles needed to
create the movement ordered by the cortex

Answer 19

Basal ganglia

Question 20

Where do corticobulbar tracts decussate @

Answer 20

@ the level of the cranial nerve nuclei they go down w

Question 21

Where does the corticospinal tract start?

Answer 21

Area 4

Question 22

Where does the corticospinal tract end?

Answer 22

Anterior horn cell

Question 23

What factor is the predictor of the recovery from paralysis?

Answer 23

Damage to the corticospinal tract

Question 24

Contracts muscle but not precisely

Answer 24

Crude response

Question 25

Spasticity is due to

Answer 25

Reflex arc gone berserk and disinhibition of upper motor neurons