22: Sensory Pathways

Question 1

Anterior fissure & posterior sulcus

Answer 1

helpes seperate the spinal cord into two halves

Question 2

Gray Commissure

Answer 2

forms a comunication link between the two halfs, a narrow band of gray matter

Question 3

central canal

Answer 3

continues with the ventricles cavities of the brain is found in the gray commissure

Question 4

motor neurons and interneurons

Answer 4

heavily concentrated in the central portion of the spinal cord, causing the look of gray matter

Question 5

sensory nuerons

Answer 5

cell bodies in the dorsal root ganglion

Question 6

horns

Answer 6

gray matter portions of the cord , named by location are, (anterior, posterior, and lateral)

Question 7

white matter

Answer 7

the nerve fibers of the bundles are myelinated for rapid conduction and therefore appear as this

Question 8

nerve colums

Answer 8

the fiber bundles are referred to as this, named for location, (anterior posterior, lateral)

Question 9

tracts

Answer 9

within the colums are these bundles of nerve fibers,

Question 10

spinothalamic tract

Answer 10

acending tract sensory

Question 11

corticospinal tract

Answer 11

decending tract motor

Question 12

ventral root

Answer 12

carries motor information

Question 13

dorsal root

Answer 13

is sensory

Question 14

dorsal column-medial lemniscal

Answer 14

assending tract that carrys surface receptor impulses

Question 15

anterolateral

Answer 15

assending tract that carrys surface receptor impulses

Question 16

cerebral cortex

Answer 16

converting the cerebrum , a layer of gray matter

Question 17

central sulcus

Answer 17

runs from medial to lateral across each hemishpere

Question 18

gyrus

Answer 18

each convolution (raised area) of the cortex is this

Question 19

post central gyrus

Answer 19

area behind the central sulcus

Question 20

somatic sensory area

Answer 20

post central gyrus is this of the cortex

Question 21

proprioception

Answer 21

a sense that requires very rapid transmission of afferent info, the ability to sense the tension and position of the muscles

Question 22

fast pain

Answer 22

sharp, felt quickly

Question 23

slow pain

Answer 23

aching, requires time