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PTRS 852 > 5 > Flashcards

5 Flashcards

1
Q

Tracts that originate in the brainstem

A

Tectospinal
rubrospinal
Reticulospinal
Vestibulospinal

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2
Q

sections of the brainstem

A

Basilar
Tegmentum
Midbrain has additional poserior section; tectum

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3
Q

section located anterior part of brainstem and contains predominately motor system structures

A

Basilar section

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4
Q

What does the basilar section of the brainstem contain

A

Descending axons from cerebral cortex

motor nuclei

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5
Q

section located in the posterior part of the brainstem

A

Tegmentum

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6
Q

What does the tegmentum section of the brainstem contain

A

Reticular formation
Sensory nuclei and ascending sensory tracts
Cranial nerve nuclei
Medial longitudinal fasiculus

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7
Q

Adjusts general activity level of nervous system

A

Reticular formation

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8
Q

Tract that coordinates eye and hand movement

A

Medial longitudinal fasiculus

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9
Q

additional posterior section in the midbrain

A

tectum

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10
Q

What does the tectum section of the brainstem contain

A

pretectal area

Superior and inferior colliculi

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11
Q

Reflexive control of eye and head movement

A

Tectum

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12
Q

Main functions of the reticular formation

A

Integrates sensory and cortical info
Regulates somatic motor activity, autonomic func and consciousness
Modulates nociceptive info

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13
Q

Functions of the medulla

A

Contributes to control of eye and head movements
Coordinates swallowing
Helps regulate cardiovascular, respiratory and visceral activity

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14
Q

Which cranial nerves are entirely in the skull

A

CN I and II

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15
Q

CN I

A

Olfactory
Smell
Connection to brain: Inferior frontal lobe
Identify substances

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16
Q

CN II

A

Optic
Vision
Connection to brain: Diencephalon
Check vision/pupillary reflex (sensory)

17
Q

CN III

A

Oculomotor
Moves eye up, down, medially, raises upper eyelid, constricts pupil, adjusts lens shape
Conn to brain: midbrain
Track finger, check eyelids, pupillary reflex (motor)

18
Q

CN IV

A

Trochlear
Move eye medially and down
Con to brain: midbrain
Have track finger

19
Q

CN V

A

Trigeminal
Facial sensation, chewing, sensation from TMJ
CTB: pons
Sensation of face, corneal reflex (sensory), masseter reflex

20
Q

CN VI

A

Abducens
Abducts eye
CTB: between pons and medulla
Have track finger

21
Q

CN VII

A 
Facial
Facial expression, closes eye, tears, salvation, taste
CTB between pons and medulla
Facial movements
Corneal reflex (motor part)
22
Q

CN VIII

A 
Vestibulocochlear
Sensation of head positions relative to gravity and head movement: hearing
CTB between pons and medulla
Vestibular function
Auditory function
23
Q

CN IX

A

Glossopharyngeal
Swallowing, salvation, taste
CTB medulla
Gag reflex sensory part

24
Q

CN X

A

Vagus
Regulates viscera, swallowing, speech, taste
CTB medulla
Have patient say ah, gag reflex motor

25
Q

CN XI

A

Accessory
Elevates shoulders, turns head
CTB spinal cord and medulla
MMT sternocleidomastoid and upper trap

26
Q

CN XII

A

Hypoglossal
Moves tongue
CTB medulla
have patient stick out tongue

27
Q

Facilitates LMN’s innervating muscles of head and neck

A

Corticobulbar tracts

28
Q

Except LMN’s to muscles of lower face (CN VII and V) and tongue (CN XII) LMN’s are controlled by

A

Contralateral corticobulbar fibers

29
Q

Disorders of the brainstem signs

A

Dysphagia
Dysarthria
Diplopia
Dysmetria

30
Q

Lesion to one side of brainstem at CN III, VI, XIII (never all three) also damages nearby corticospinal tract

A

Alternating hemiplegia

31
Q

Symptoms of alternating hemiplegia of LMN

A

Flaccid paralysis on the same side of face/head as the lesion

32
Q

Symptoms of alternating hemiplegia of UMN

A

spasctic paralysis of arm/leg on opposite side of body

PTRS 852 (11 decks)

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