Neuro Fns Lect #20

Front 1

The space in between the stria medullaris acoustica and the decussation of the trochlear nerve, on the Dorsal aspect of the midbrain defines the boundary of this?

Back 1

The Pons

Front 2

What are the boundaries of the Pons on the ventral aspect?

Back 2

Inferior pontine sulcus and superior pontine sulcus

Front 3

This is an elevation of the dorsal aspect of the pons on each side of the midline just rostral to the stria medullaris acoustica?

Back 3

The facial colliculus

Front 4

This is the membrane that forms the rostral part of the roof of the 4th ventricle?

Back 4

Superior Medullary Velum

Front 5

This peduncle is the most larteral, and originates on the ventral pons?

Back 5

Middle cerebelar peduncle

Front 6

This cranial nerve exits the lower pons at the inferior pontine sulcus close to the pyramid in line with CNXII?

Back 6

Abducens (VI)

Front 7

This cranial nerve emerges in the lower pons at the cerebellopontine angle and divides into a motor root and an intermediate nerve?

Back 7

CNVII

Front 8

This cranial nerve emerges from the mid-pons at the junction of the middle cerebellar peduncle and the transverse fibers of the basilar pons?

Back 8

CNV

Front 9

What is the dorsal portion of the pons called?

Back 9

Pontine tegmentum

Front 10

What is the ventral portion of the pons called?

Back 10

Basilar pons

Front 11

Wat two things constitute the roof of the pons?

Back 11

Cerebellum and the superior medullary velum

Front 12

What SPACE lies between the roof of the pons and the pontine tegmentum?

Back 12

4th ventricle

Front 13

Longitudinal fiber bundles in the basilar pons are derived from what structure in the brain?

Back 13

Cerebral Cortex

Front 14

These fibers within the basilar pons project to the spinal cord via pyramids?

Back 14

Corticospinal Fibers

Front 15

These fibers within the basilar portion of the pons are derived from the motor cortex and constitute the upper motor neuron pathway for cranial nerve motor nuclei?

Back 15

Corticobulbar Fibers

Front 16

These fibers are derived from the 4 lobes and descend ipsilaterally and synapse on pontine nuclei within the basilar pons?

Back 16

Corticopontine Fibers

Front 17

The axons of these neurons within the basilar pons form the transverse fibers of pons (pontocerebellar fibers)

Back 17

Pontine Nuclei

Front 18

These fibers cross and form the contralateral middle cerebellar peduncle, and are part of the system by which the cortex influences the contralateral cerebellum

Back 18

Pontocerebellar fibers

Front 19

This GSE cell group is located medial to the sulcus limitans closest to the midline in the lower pons?

Back 19

Abducens nucleus

Front 20

CN 6 innervates what muscle?

Back 20

Lateral rectus muscle

Front 21

This SVE cell group located in the lower pons is medial to the sulcus limitans and its position is comparable to the nucleus ambiguus of the medulla?

Back 21

Facial motor nucleus

Front 22

What is the area called where axons from the facial motor nucleus bend dorsally around CN VI?

Back 22

Internal Genu of VI

Front 23

The axons of this nucleus located in the lower pons innervate the stapedius, posterior digastric, and stylohyoid?

Back 23

Facial motor nucleus

Front 24

The vestibular nuclei and spinal V nucleus and tract are (lateral/medial) to the sulcus limitans in the lower pons?

Back 24

Lateral

Front 25

This nucleus in the lower pons has nuerons of SSA fiber component?

Back 25

Vestibular nuclei

Front 26

This structure is located ventral to the motor nucleus of CNII in the lower pons, and is associated with the auditory system?

Back 26

Superior Olivary Complex

Front 27

This band of auditory relay fibers can be located in the ventral tegmentum?

Back 27

Trapezoid body

Front 28

This tract rotates upon entry into the pons from the medulla,to extend horizontally….dont slip!!

Back 28

Medial Leminiscus

Front 29

These tracts are located at the lateral edge of the medial leminiscus?

Back 29

Spinothalamic tracts

Front 30

This structure in the lower pons is located on each side of the midline (retaining its original position) and is ventral to the internal genu of 7?

Back 30

MLF

Front 31

This fiber tract is located between CN VI and CNVII fibers in the middle tegmentum and contains both ascending and descending fibers

Back 31

Central Tegmental Tract

Front 32

This GSA nucleus in the middle pons is lateral to the CN V nerve?

Back 32

Principle sensory nucleus of V

Front 33

What sensory modalities does principle sensory nucleus of V convey?

Back 33

Tactile and pressure sensations from the face

Front 34

This SVE nucleus is located medial to CN V in the pontine tegmentum?

Back 34

Motor nucleus of V

Front 35

This tract/nucleus duo is located In the middle pons at the border of tegmentum with the lateral wall of the fourth ventricle?

Back 35

Mesencephalic tract and nucleus of V

Front 36

What kind of neurons are found in the mesencephalic nucleus?

Back 36

pseudounipolar neurons

Front 37

What is the function of the mesencephalic nucleus and tract of V?

Back 37

unconscious proprioception for the face (jaw jerk reflex)

Front 38

This is the auditory relay tract that begins in the middle pons, and is lateral to the STT?

Back 38

Lateral Leminiscus

Front 39

What forms the roof of the pons in the middle pons level?

Back 39

Superior medullary velum

Front 40

What forms the roof of the pons at the lower pons level?

Back 40

Cerebellum

Front 41

These crossing fibers are found in the superior medullary velum at the level of the isthmus?

Back 41

CN IV

Front 42

What muscle does CN 4 innervate?

Back 42

Superior Oblique Muscles

Front 43

These pigmented cells located at the upper pons control cortical activation (focus our attention)?

Back 43

Locus Ceruleus

Front 44

What nuerotransmitter do locus ceruleus use?

Back 44

NE norepinephrine

Front 45

This peduncle's fibers decussate at the level of the upper pons in the ventral tegmentum?

Back 45

Superior Cerebellar Peduncle

Front 46

This tract in the upper pons is EXTERNAL to the superior cerebelar peduncle and is an auditory relay fiber tract?

Back 46

Lateral Leminiscus

Front 47

The intermediate nerve contains fiber types of (GVE, SVA, Both, neither)

Back 47

Both

Front 48

Which part of cranial nerve VII (intermediate nerve or motor nerve) gives GVE innervation of the lacrimal, subingual and submandibular glands?

Back 48

Intermediate

Front 49

Where do axons of the principle nucleus of V project to?

Back 49

Thalamus

Front 50

What type of sensation does the mesencephalic nucleus of V give?

Back 50

Tactile - afferent limb of "jaw jerk" reflex

Front 51

Neuron cell bodies of the "jaw jerk" reflex are found where?

Back 51

Mesencephalic tract and nucleus of V (NOT trigeminal ganglion)

Front 52

Where does the central process of the mesencephalic nucleus of V give off collaterals to?

Back 52

Motor nucleus of V (contract muscles of jaw)

Front 53

What is the pathway of the sensory limb of the corneal reflex?

Back 53

long ciliary > nasociliary > CN V > trigeminal ganglion > trigeminal nerve > spinal V tract > spinal V nucleus > Bilateral motor nuclei of CN VII

Front 54

What is the pathway of the motor limb of the corneal reflex?

Back 54

Bilateral Facial motor nuclei > CN VII > upper divisions of CNVII > zygomatic nerves of CN VII > palpebral part of the orbicularis oculi

Front 55

You touch a patients right eye and both eyes blink, you touch his left and you get no response in either eye, where is the lesion?

Back 55

Left CN V

Front 56

You touch a patients right eye his right eye blinks but nothing happens inhis left eye, when you touch his left eye, his right eye blinks but no blinking in the left, where is the lesion?

Back 56

Left CNVII

Front 57

Superior, middle, and inferior alternating hemiplegia involve damage to which three cranial nerves, respectively?

Back 57

3,6,12

Front 58

What structures are affected in Millard-Gubler syndrome?

Back 58

corticospinal tract, corticobulbar tract, abducens nerve, and facial nerve

Front 59

The space in between the stria medullaris acoustica and the decussation of the trochlear nerve, on the Dorsal aspect of the midbrain defines the boundary of this?

Back 59

The Pons

Front 60

What are the boundaries of the Pons on the ventral aspect?

Back 60

Inferior pontine sulcus and superior pontine sulcus

Front 61

This is an elevation of the dorsal aspect of the pons on each side of the midline just rostral to the stria medullaris acoustica?

Back 61

The facial colliculus

Front 62

This is the membrane that forms the rostral part of the roof of the 4th ventricle?

Back 62

Superior Medullary Velum

Front 63

This peduncle is the most larteral, and originates on the ventral pons?

Back 63

Middle cerebelar peduncle

Front 64

This cranial nerve exits the lower pons at the inferior pontine sulcus close to the pyramid in line with CNXII?

Back 64

Abducens (VI)

Front 65

This cranial nerve emerges in the lower pons at the cerebellopontine angle and divides into a motor root and an intermediate nerve?

Back 65

CNVII

Front 66

This cranial nerve emerges from the mid-pons at the junction of the middle cerebellar peduncle and the transverse fibers of the basilar pons?

Back 66

CNV

Front 67

What is the dorsal portion of the pons called?

Back 67

Pontine tegmentum

Front 68

What is the ventral portion of the pons called?

Back 68

Basilar pons

Front 69

Wat two things constitute the roof of the pons?

Back 69

Cerebellum and the superior medullary velum

Front 70

What SPACE lies between the roof of the pons and the pontine tegmentum?

Back 70

4th ventricle

Front 71

Longitudinal fiber bundles in the basilar pons are derived from what structure in the brain?

Back 71

Cerebral Cortex

Front 72

These fibers within the basilar pons project to the spinal cord via pyramids?

Back 72

Corticospinal Fibers

Front 73

These fibers within the basilar portion of the pons are derived from the motor cortex and constitute the upper motor neuron pathway for cranial nerve motor nuclei?

Back 73

Corticobulbar Fibers

Front 74

These fibers are derived from the 4 lobes and descend ipsilaterally and synapse on pontine nuclei within the basilar pons?

Back 74

Corticopontine Fibers

Front 75

The axons of these neurons within the basilar pons form the transverse fibers of pons (pontocerebellar fibers)

Back 75

Pontine Nuclei

Front 76

These fibers cross and form the contralateral middle cerebellar peduncle, and are part of the system by which the cortex influences the contralateral cerebellum

Back 76

Pontocerebellar fibers

Front 77

This GSE cell group is located medial to the sulcus limitans closest to the midline in the lower pons?

Back 77

Abducens nucleus

Front 78

CN 6 innervates what muscle?

Back 78

Lateral rectus muscle

Front 79

This SVE cell group located in the lower pons is medial to the sulcus limitans and its position is comparable to the nucleus ambiguus of the medulla?

Back 79

Facial motor nucleus

Front 80

What is the area called where axons from the facial motor nucleus bend dorsally around CN VI?

Back 80

Internal Genu of VI

Front 81

The axons of this nucleus located in the lower pons innervate the stapedius, posterior digastric, and stylohyoid?

Back 81

Facial motor nucleus

Front 82

The vestibular nuclei and spinal V nucleus and tract are (lateral/medial) to the sulcus limitans in the lower pons?

Back 82

Lateral

Front 83

This nucleus in the lower pons has nuerons of SSA fiber component?

Back 83

Vestibular nuclei

Front 84

This structure is located ventral to the motor nucleus of CNII in the lower pons, and is associated with the auditory system?

Back 84

Superior Olivary Complex

Front 85

This band of auditory relay fibers can be located in the ventral tegmentum?

Back 85

Trapezoid body

Front 86

This tract rotates upon entry into the pons from the medulla,to extend horizontally….dont slip!!

Back 86

Medial Leminiscus

Front 87

These tracts are located at the lateral edge of the medial leminiscus?

Back 87

Spinothalamic tracts

Front 88

This structure in the lower pons is located on each side of the midline (retaining its original position) and is ventral to the internal genu of 7?

Back 88

MLF

Front 89

This fiber tract is located between CN VI and CNVII fibers in the middle tegmentum and contains both ascending and descending fibers

Back 89

Central Tegmental Tract

Front 90

This GSA nucleus in the middle pons is lateral to the CN V nerve?

Back 90

Principle sensory nucleus of V

Front 91

What sensory modalities does principle sensory nucleus of V convey?

Back 91

Tactile and pressure sensations from the face

Front 92

This SVE nucleus is located medial to CN V in the pontine tegmentum?

Back 92

Motor nucleus of V

Front 93

This tract/nucleus duo is located In the middle pons at the border of tegmentum with the lateral wall of the fourth ventricle?

Back 93

Mesencephalic tract and nucleus of V

Front 94

What kind of neurons are found in the mesencephalic nucleus?

Back 94

pseudounipolar neurons

Front 95

What is the function of the mesencephalic nucleus and tract of V?

Back 95

unconscious proprioception for the face (jaw jerk reflex)

Front 96

This is the auditory relay tract that begins in the middle pons, and is lateral to the STT?

Back 96

Lateral Leminiscus

Front 97

What forms the roof of the pons in the middle pons level?

Back 97

Superior medullary velum

Front 98

What forms the roof of the pons at the lower pons level?

Back 98

Cerebellum

Front 99

These crossing fibers are found in the superior medullary velum at the level of the isthmus?

Back 99

CN IV

Front 100

What muscle does CN 4 innervate?

Back 100

Superior Oblique Muscles

Front 101

These pigmented cells located at the upper pons control cortical activation (focus our attention)?

Back 101

Locus Ceruleus

Front 102

What nuerotransmitter do locus ceruleus use?

Back 102

NE norepinephrine

Front 103

This peduncle's fibers decussate at the level of the upper pons in the ventral tegmentum?

Back 103

Superior Cerebellar Peduncle

Front 104

This tract in the upper pons is EXTERNAL to the superior cerebelar peduncle and is an auditory relay fiber tract?

Back 104

Lateral Leminiscus

Front 105

The intermediate nerve contains fiber types of (GVE, SVA, Both, neither)

Back 105

Both

Front 106

Which part of cranial nerve VII (intermediate nerve or motor nerve) gives GVE innervation of the lacrimal, subingual and submandibular glands?

Back 106

Intermediate

Front 107

Where do axons of the principle nucleus of V project to?

Back 107

Thalamus

Front 108

What type of sensation does the mesencephalic nucleus of V give?

Back 108

Tactile - afferent limb of "jaw jerk" reflex

Front 109

Neuron cell bodies of the "jaw jerk" reflex are found where?

Back 109

Mesencephalic tract and nucleus of V (NOT trigeminal ganglion)

Front 110

Where does the central process of the mesencephalic nucleus of V give off collaterals to?

Back 110

Motor nucleus of V (contract muscles of jaw)

Front 111

What is the pathway of the sensory limb of the corneal reflex?

Back 111

long ciliary > nasociliary > CN V > trigeminal ganglion > trigeminal nerve > spinal V tract > spinal V nucleus > Bilateral motor nuclei of CN VII

Front 112

What is the pathway of the motor limb of the corneal reflex?

Back 112

Bilateral Facial motor nuclei > CN VII > upper divisions of CNVII > zygomatic nerves of CN VII > palpebral part of the orbicularis oculi

Front 113

You touch a patients right eye and both eyes blink, you touch his left and you get no response in either eye, where is the lesion?

Back 113

Left CN V

Front 114

You touch a patients right eye his right eye blinks but nothing happens inhis left eye, when you touch his left eye, his right eye blinks but no blinking in the left, where is the lesion?

Back 114

Left CNVII

Front 115

Superior, middle, and inferior alternating hemiplegia involve damage to which three cranial nerves, respectively?

Back 115

3,6,12

Front 116

What structures are affected in Millard-Gubler syndrome?

Back 116

corticospinal tract, corticobulbar tract, abducens nerve, and facial nerve