Lab 4 internal features of the brainstem, blood supply and the cerebellum

Question 1

TVP is an (blank) pathway that. Afferent travel through the DRG and ascend up the spinal cord where they synapse in the (Blank & Blank) nucleus. after synapsing, fibers (blank) and travel up the Medial Lemniscus where they synapse in the VPL of the (blank) and terminate in the (blank) cortex.

Answer 1

Ascending pathway 
cuneate or gracile nucleus
decussate 
thalamus
primary somatic sensory cortex

Question 2

what is the name of the pathway that carries TVP from the body

Answer 2

dorsal columns-medial lemniscus pathway

Question 3

what will a lesion below the medulla of the medial lemniscus pathway cause? above the medulla?

Answer 3

ipsilateral TVP loss

contralateral TVP loss

Question 4

pain and temperature travel via what tract?

Answer 4

anterolateral system (spinothalamic)

Question 5

P&T travel through the (blank) and synapse in the (blank) horn of the spinal cord. after this point fibers (blank) and ascend up the spinal cord where they synapse in the (blank) of the thalamus. Fibers terminate in the (blank) cortex.

Answer 5

DRG
dorsal horn 
ducussate 
VPL
primary somatic sensory cortex

Question 6

what is the main tract that carries descending motor information?

Answer 6

lateral corticospinal tract

Question 7

where does decussation of the lateral corticospinal tract occur?

Answer 7

pyramids of the medulla

Question 8

what structure in the midbrain does the corticospinal tract travel through?

Answer 8

cerebral peduncles

Question 9

what are the 3 functional units areas of the cerebellum?

Answer 9

vestibulocerebellum
spinocerebellum
cerebrocerebellum

Question 10

what 2 structures make up the vestibulocerebellum?

Answer 10

flocculus and the nodulus

Question 11

what area receives input from the vestibular apparatus and is important in control of balance? How does it receive this input?

Answer 11

vestibulocerebellum

via the inferior cerebellar peduncle

Question 12

the midline vermis and the paramedian area of the cerebellum make up what functional lobe?

Answer 12

spinocerebellum

Question 13

what area sends projections to fastigial and interpositus nuceli?

Answer 13

spinocerebellum

Question 14

the spinocerebellum receives information from the muscles and joint via what structure?

Answer 14

inferior cerebellar peduncle

Question 15

the (blank) processes information and sends efferents to other areas of the brain and brainstem mostly by (blank) which in turn are able to control primary axial musculature for balance and positioning.

Answer 15

spinocerebellum

superior cerebellar peduncles

Question 16

what does the lateral masses of tissue of the cerebellar hemispheres make up?

Answer 16

cerebrocerebellum

Question 17

the cerebrocerebellum receives most of its input from the basilar pons via the (blank) and after processing the input it sends efferents to the (blank) nucleus of the deep cerebellar nuclei.

Answer 17

middle cerebral peduncles

dentate nuclei

Question 18

the dentate nuclei project via (blank) to the motor relay nuclei of the thalamus which in turn project to the motor cortical areas.

Answer 18

superior cerebellar peduncles

Question 19

the cerebrocerebellum is concerned with what?

Answer 19

information about proposed body movement and fine motor control