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anatomy > Brain Stem Wk4 > Flashcards

Brain Stem Wk4 Flashcards

1
Q

What are the brainstem do

A

Origin of cranial nerves, thoroughfare for ascending sensory & descending motor and site that including CVR, respiratory and level of consciousness

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2
Q

Brainstem consists of

A

midbrain, pons, medulla

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3
Q

The substantia nigra are the

A

lines on the midbrain

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4
Q

Red nucleus are the small

A

ovals on the midbrain

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5
Q

Tectum and tegmentum are the

A

boobs and eyes respectively for the midbrain

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6
Q

The mickey mouse ears are the

A

cerebral peduncle

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7
Q

The mickey mouses mouth is the

A

cerebral aqueduct

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8
Q

In the pons, which structures are present?

A

inferior colliculus and corticospinal & corticobulbar fibres

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9
Q

In the medulla, what structures are there

A

central canal and pyramids

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10
Q

What are the bumps on the brainstem

A

Superior and inferior colliculus

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11
Q

Medulla consists of the

A

olives (laterally) & pyramids (medially)

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12
Q

Crus cerebri (cerebral peduncles)

A

is located in the midbrain

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13
Q

What is the gap in between the midbrain (between mammillary bodies & crus cerebri)?

A

CSF cisterns (interpeduncular cistern)

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14
Q

Decussation of pyramids is where

A

the motor information moves from one side to another side (waving right hand = orginated in left motor cortex via cortical spinal tract)

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15
Q

Superior & inferior colliculus is sometimes referred to as

A

corpora quadrogemia

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16
Q

What are considered to be the dorsal column tracts

A

Fasciculus cuneatus & gracilis = they carry sensory info from arms & legs to somatosensory cortex

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17
Q

Alar plate =

A

sensory information into nervous system like touch, hearing, balance, taste

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18
Q

Basal plate =

A

motor infomation like sticking your tongue out

19
Q

Tectum

A

superior and inferior colliculi are situated

20
Q

Tegmentum

A

Central and biggest section

21
Q

The Edinger-Westphal nucleus is found in the

A

midbrain level

22
Q

What are the components for midbrain

A

cerebral peduncles (crus cerebri); superior colliculus, cerebral aqueduct, oculomotor nucleus

23
Q

Hypoglossal nucleus innervates

A

tongue muscle

24
Q

Vestibular nuclei receives

A

balancing information

25
Q

Pyramids are part of the

A

corticospinal tract

26
Q

Reticular formaiton is a

A

complicated network of circuits extending from the midbrain to medulla

27
Q

Descending tracts give

A

info about voluntary skeletal muscle mmt for limbs & head/neck region

28
Q

Inside the white fibre tracts are the

A

motor nucleus - like hypoglossal nerve, trochlear nerve, oculomotor, red nucl, trigeminal, abducent nerve, medial longitual fasciculus, facial nucl.

29
Q

Ascending tracts helps with the

A

info coming from the arms to travel to the thalamus

30
Q

Midbrain receives blood from

A

posterior cerebral artery & basiliar artery

31
Q

Middle pons receives blood from

A

AICA - anterior inferior cerebellar art & basiliar art

32
Q

Upper medulla receives blood supply

A

Posterior inferior cerebellar artery (PICA); vertebral art; anterior spinal art

33
Q

Caudal medulla receives blood

A

posterior spinal, PICA, vertebral, and anterior spinal

34
Q

Brainstem processes include

A

speech, eye mmt, coordination of head & eye, control of posture, mastication, regulation of BP and respiration, level of arousal

35
Q

What are the structures present in the medulla

A

Inferior olives, pyramids, hypoglossal nucleus

36
Q

Why is AICA not provide blood to the pons primarily

A

The anterior inferior cerebellar artery (AICA) also originates from the basilar artery but is primarily responsible for supplying blood to the cerebellum (particularly the anterior inferior portion) and parts of the inner ear.

37
Q

Somatic motor nuclei are

A

medial

38
Q

Sensory nuclei are

A

lateral

39
Q

In Midbrain (1), what can we see

A

cerebral pedunles, superior colliculus, oculomotor nucleus and cerebral aqueduct

40
Q

In Midbrain (2), what can we see

A

cerebral peduncles, inferior colliculus, trochlear nucl., medial lemniscus, substantia nigra

41
Q

In Pons (3) , what can we see

A

inferior colliculus and corticospinal & corticobulbar fibres

42
Q

In Open medulla (4), we can see

A

inferior olivary nucl., medial lemniscus, dorsal motor nucleus of vagus, hypoglossal nucleus, vestibular nuclei, pyramids, solitary nucleus

43
Q

In Closed medulla (5), we can see

A

gracile fas/nucl (lower limbs); cuneate fas/nucl (upper limbs); spinal trigmeninal tract; spinocerebellar tract, pyramids (corticospinal)

44
Q

In Closed medulla (6), we can see

A

pyramidal decussation - corticospinal tract crosses over

anatomy (50 decks)

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