Test 2 #1

Question 1

things that you see, hear, and touch are ______ stimuli

Answer 1

exteroceptive

Question 2

the erector spinal is innervated by neurons found in the ______

Answer 2

medial ventral horn

Question 3

rent in kansas apartment

Answer 3

100

Question 4

where are alpha motor neurons found?

Answer 4

gray matter of spinal cord

Question 5

proprioceptive sensation of the lower limb is carried by which tract?

Answer 5

gracile

Question 6

sensory information arriving at one side of the body or head typically reaches the cerebral cortex of the contralateral side. The axons that cross the midline to accomplish this are the axons of

Answer 6

2nd order neurons

Question 7

what tract turns your head in response to a stimulus?

Answer 7

tectospinal

Question 8

the nucleus dorsalisls is located in the spinal cord at the segmental levels of

Answer 8

T1-L2

Question 9

most reflexes are simple and require synapses within only one spinal segment. Which reflex requires synapses over several spinal segments?

Answer 9

withdrawal reflex

Question 10

which does not contain corticobular fibers?

Answer 10

lateral corticospinal

Question 11

which contain descending upper motor fibers?

Answer 11

all the above

Question 12

pathway carries pain sensation to the cerebrum?

Answer 12

spinothalamic

Question 13

a 58 year old woman complains of left hand weakness that she noticed while planting flowers in her garden. Neurological examination indicates weak wrist and finger flexion and extension. She also has weakness abducting and adducting and opposing her thumb. all other motor and sensory tests are normal.

Answer 13

Right precentral gyrus

Question 14

52 y/o woman unable to mover her left leg visits your office. Sensory modalities infall her limbs are retained and there appears to be no sign of weakness in any of her other limbs. In which of the following structures are the cell bodies of lower motor neuron innervating the lower limb are located?

Answer 14

Lammina VIII and IX

Question 15

where do the fibers of the anterior corticospinal tract cross?

Answer 15

midline of the spinal cord

Question 16

a 63 year old man has a loss of discriminative touch, vibratory sense and proprioception on his right arm. Where are the cell bodies for a second order neurons in the pathway located?

Answer 16

cuneate nucleus

Question 17

lamina of the rexed (spinal lamina of the gray matter) that collectively form the posterior horn are

Answer 17

I-VI

Question 18

a stimultaneous and opposite pattern of activity in the contralateral limb is known as

Answer 18

crossed effects

Question 19

35 year old roofer is examine in the emergency department after falling two stories and landing abdomen first on a barrel. Reveals weakness and loss of pain and temperature sensation in the left and right lower limbs. What area of the CNS is most likely involved?

Answer 19

anterior spinal cord

Question 20

the area of skin that is innervated by a single nerve and it’s receptors is called a

Answer 20

receptive field

Question 21

what are the posterior columns?

Answer 21

gracile and cuneate fascicles

Question 22

crossing fibers originating from the gracile nucleus is called?

Answer 22

Internal arcuate fiers

Question 23

erector spinae is innervated by neurons in the

Answer 23

medial ventral horn

Question 24

the posterior spinocerebeller tract originates from which nucleus?

Answer 24

dorsal thoracic

Question 25

Neurons in the spinal ganglia are

Answer 25

pseudounipolar

Question 26

why is the cervical region of the spinal cord the largest?

Answer 26

in the most amount of white matter

Question 27

what is the primary transmitter secreted at the NMJ?

Answer 27

acetylecholine

Question 28

receptor from internal stimuli

Answer 28

interoceptor eg stomach pain/BP

Question 29

nociceptor

Answer 29

responds to pain

Question 30

light touch/rapidly adapting receptor

Answer 30

follicular

Question 31

touch differences in touch, slow adapting e.g. holding a pencil

Answer 31

merk’s

Question 32

vibration

Answer 32

pacinian

Question 33

reticular formation

Answer 33

pons

Question 34

noxious, pain, thermal goes on what tract?

Answer 34

Spinothalamic (lateral)

Question 35

dermatome of upper arm

Answer 35

C7

Question 36

Stimulus of a stretch receptor

Answer 36

Gamma

Question 37

Type of nocioceptor

Answer 37

Free nerve ending

Question 38

Follicular receptor

Answer 38

mechanoreceptor

Question 39

Posterior spinocerebellar tract nucleus

Answer 39

dorsal thoracic nucleus

Question 40

Muscle spindle in an example

Answer 40

Stretch receptor

Question 41

Upper arm injury to guy in…

Answer 41

cuneate fasciculus

Question 42

pain sensation to the cerebellum

Answer 42

Spinothalamic

Question 43

does not contain corticobulber fibers

Answer 43

pyramid

Question 44

patellar reflex is an example of

Answer 44

myostatic

Question 45

fibers cross

Answer 45

withdrawal reflex

Question 46

gracile fasciculus/nucleus located in

Answer 46

DRG

Question 47

Fibers of gracile fascicles cross at

Answer 47

internal arcuate fibers