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Flashcards in Last bits Deck (13):
1

Of the following, which excites extensors, and inhibits flexors:
-Lateral reticulospinal tract
-Medial reticulospinal tract
-Lateral vestibulospinal tract
-Medial vestibulospinal tract

Medial reticulo and lateral vestibulospinal tracts

2

Where does the input for the labyrinthian righting reflex come from?

Vestibular apparatus

3

Upper pons lesion will produce decerebrate or decorticate posturing?

Decerebrate

4

Lesion below the red nuclei, but above the vestibular nuclei will allow what tract to facilitate extension and cause decerebrate posturing?

Lateral Vestibulospinal tract

5

Where are the two places the lesions can occur to produce decorticate posturing?

Internal capsule
Midbrain

6

Why is it that a lesion to the internal capsule or the midbrain causes decorticate posturing?

Release of cortical influence over the vestibulospinal and neck reflexes

7

Lesions to the spinocerebellum causes hyper or hypotonia?

Hypotonia

8

What are the three cortical areas involved in the motor loop of the basal ganglia?

Primary motor
Supplementary motor
Premotor

9

What are the two cortical areas involved in the oculomotor loop of the basal ganglia?

FEF
Supplementary eye fields

10

What is the cortical area involved in the prefrontal loop of the basal ganglia?

Dorsolateral prefrontal area

11

What are the two cortical areas involved in the limbic loop of the basal ganglia?

Anterior cingulate
Orbitofrontal

12

What are the functions of the vermal part of the spinocerebellar tract? (2)

Axial and proximal muscle regulation and eye saccades

13

What is the function of the intermediate part of the spinocerebellar tract?

Distal muscle regulation