Test 2 #3

Question 1

how many neurons participate in a stretch reflex such as a knee jerk?

Answer 1

2

Question 2

What cortical layer contains BETZ cells?

Answer 2

Inner pyramidal

Question 3

Alpha motor neurons innervate

Answer 3

Extrafusal fibers

Question 4

gamma motor neurons innervate

Answer 4

intrafusal fibers

Question 5

Afferent fibers are always sensory t/f?

Answer 5

False

Question 6

t/f corticospinal fibers are association type fibers?

Answer 6

true

Question 7

strip of skin innervated by single spinal nerve

Answer 7

dermatome

Question 8

muscle spindles are

Answer 8

stretch receptors

Question 9

Nuclear bag fibers receive _____ and _____ fibers

Answer 9

IA primary afferent, Group II afferent

Question 10

the corticospinal tract descends in the _____ limb of the internal casual and is originated in the _____ cortex within the percentile gyrus

Answer 10

posterior, motor

Question 11

in the spinal cord the ventral root is ______ in function

Answer 11

motor

Question 12

compared to large muscles in the thigh, finger muscles require

Answer 12

greater neuronal involvement

Question 13

first order tract of proprioception from the lower limb is the ______ tract

Answer 13

fasciculus gracilis

Question 14

the unconscious proprioceptive fibers of the fasciculus cuneus terminates in the ______ nucleus

Answer 14

accessory cuneate

Question 15

loss of _____ would result from a lesion of the cortical spinal tract?

Answer 15

Ipsilateral voluntary motor control

Question 16

the _______ tract is concerned with intersegmental spinal reflexes

Answer 16

fasciculus proper

Question 17

gives rise the lateral corticospinal tract

Answer 17

pyramidal decussation

Question 18

which of the following tracts decussates in the midbrain

Answer 18

ventral spinocerebellar

Question 19

which of the following tract move the head in maintaining equilibrium and center of gravity

Answer 19

vestibulospinal

Question 20

lateral entry zone of the dorsal root contains______ fibers

Answer 20

proprioceptive

Question 21

the anterior entry zone of the dorsal root contains _____ fibers

Answer 21

fine touch

Question 22

when trying to get glass of water, hand trembles more and more as it get closer to the glass. This describes a problem where?

Answer 22

lesion in the cerebellum

Question 23

Sensory structures in the medulla are _____ to the sulcus limitans

Answer 23

lateral

Question 24

Sensory structures in the spinal chord are

Answer 24

dorsal

Question 25

anterio cortico spinal tract crosses the midline of the ______

Answer 25

spinal cord

Question 26

the posterior spinocerebellar tract originates from the neurons located ______

Answer 26

(VII) nucleus of clarke

Question 27

reticular formation

Answer 27

goes everywhere and does everything

Question 28

at what level does the pathway for pain and temperature sensation for the lower limbs cross the midline?

Answer 28

lumbosacral spinal cord

Question 29

untrue of VPL nucleus

Answer 29

project to the cingulate gyrus

Question 30

spinal cord segments ____ form the cervical enlargement

Answer 30

C5-T1

Question 31

greatest diameter of the lumbar enlargement is at___ level

Answer 31

T12

Question 32

Dorsal nucleus of Clarke is located in what lamina?

Answer 32

VII

Question 33

pain and temperature is sent via

Answer 33

Spinothalamic

Question 34

mossy cell fibers are primarily ______ in function

Answer 34

excitatory

Question 35

Spinocerebellum (paleocerebellum) controls ____ type movements

Answer 35

gross

Question 36

Pontocerebellum (neocoerebellum) controls ____ type of movement

Answer 36

fine

Question 37

blood drains out of the cranium through the _____ vein

Answer 37

internal jugular vein

Question 38

middle cerebral artery runs with the _______

Answer 38

lateral sulcus

Question 39

What supplies the visual cortex?

Answer 39

posterior cerebral artery

Question 40

which drains deep?

Answer 40

Great vein of Galen

Question 41

What crosses the corpus callous?

Answer 41

anterior cerebral artery

Question 42

what drains the internal structures of the brain?

Answer 42

Great cerebral vein of Galen

Question 43

drains the brain

Answer 43

Internal jugular vein

Question 44

what artery supplies blood to the interior part of the temporal lobe?

Answer 44

Posterior cerebral artery