spinal cord

Question 1

start of the spinal cord

Answer 1

Atlanto occipital joint / foramen magnum

Question 2

end of spinal cord
Lumbar puncture in adult
Lumbar puncture in children

Answer 2

L1/L2
L3/L4
L4/L5

CONUS MEDULLARIS

Question 3

Epidural space of spinal cord contains

Answer 3

venous plexus of batson

Question 4

fibers carrying pain, touch & temperature synapse at the

Answer 4

substantia gelatinosa

Question 5

sense of movement, vibration, position, 2 point discrimination originate from

Answer 5

nucleus proprius

Question 6

stretch reflex

fibers for formation of muscle spindles (C8-L4 Clareke’s) synapse at

Answer 6

Nucleus dorsalis

Question 7

alpha motor neurons
y- motor neurons

Answer 7

for muscle
from muscle spindles

Question 8

C3-C5
C1-C5

Answer 8

Diaphragm
accessory nerve (trapezius+sternocleidomastoid)

Question 9

Corticospinal tract
Spinothalamic tract

Answer 9

motor (descending)
sensory {pain, touch, temp.

Question 10

dorsal column

medial lenniscus pathway

Answer 10

Fasciculus cuneatus - carry upper limb fibers
Fasciculus gracillis- carry lower limb fibers

carries conscious proprioreception

Question 11

primary somatosensory cortex is

Answer 11

post central gyrus

Question 12

3 MAJOR TRACTS

Answer 12

Cervicospinal
dorsal column
Spinnothalamic

check google for image

Question 13

3 branches of Exeteroceptive of the afferent/descending tract

Answer 13

Lateral spinothalamic (pain & temp.)
ANterioir spinothalamic (touch, pressure )

Question 14

3 Branches of proprioceptive of the afferent/descending tract

Answer 14

F. cuneatus
F. Gracillis

Question 15

Ingerorecptive tract OF Ascending/sensory

Answer 15

Orginate from internal receptors (Autonomicn NS)

Question 16

Ascending descedning is divides into 2

Answer 16

Pyramidal
Extrapyrimidal

Question 17

Pyramidal ( conscious ) is divided to 2

Answer 17

Corticopinal- (lateral, anterioir muscles below the neck )
Corticobulbar- nuclear (cortex~brainstem)
for movement of head, neck in CNS

Question 18

EXtraopyramidal are divided into

Answer 18

Rubrospinal ( muscle tone )
Vestibulospinal (antigravity)
Reticulospinal ( muscl tone )
Tectopinal

Question 19

all sensory pathways go to thalamus ( except olfactory) then to the sensory cortex

Answer 19

post central gyrus, parietal lobe

Question 20

receptors of medial lemniscus pathway

Answer 20

muscle spondles, golgi tendon organs, pacinian and meseiners tactile receptors, joint receptors

Question 21

in 2nd order neurons medial meniscus deccusates & ascends though ______ and terminates at________

Answer 21

controlateral brainstem
ventral posterolateral nucleus of thymus

Question 22

above the sensory decussation transection would cause loss of sensation in

Answer 22

controlater dorsal column modalities

Question 23

transection in the spinal cord leads to loss of

Answer 23

ipsilateral dorsal colum modalities

Question 24

nucleus that receives muscle and tendon afferents and whose axons form spinocerebellar tract

Answer 24

nucleus dorsalis of calrke ( C8-L2)