3.0 neuro - brain stem Flashcards

1
Q

What does the brain stem connect

A

Spinal cord to the diencephalon and cerebrum

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2
Q

What are the three regions of the spinal cord (superior to inferior)

A

Midbrain, Pons, Medulla oblongata

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3
Q

What landmarks are visible on the ventral surface of the medulla oblongata

A

Pyramid (medial), olivary eminence (lateral)

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4
Q

What cranial nerves are associated with the medulla oblongata

A

CN IX glossopharyngeal, CN X vagus, CN XII hypoglossal

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5
Q

What region of the brain stem forms the floor of the 4th ventricle

A

Pons

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6
Q

What is the middle cerebellar peduncle

A

Bundle of axons that connects the cerebellum to the cerebral cortex and pons

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7
Q

What cranial nerves are associated with the pons

A

CN V trigeminal, CN VI abducens, CN VII facial, CN VIII vestibulocochlear

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8
Q

What landmarks are present at the base of the midbrian

A

Crus cerebri, substantia nigra

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9
Q

What and where is the tectum

A

Roof of the midbrain, 2 superior and 2 inferior colliculi

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10
Q

What cranial nerves are associated with the midbrain

A

CN III oculomotor, CN IV trochlear

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11
Q

Which part of the brain stem does the cerebral aqueduct pass

A

Midbrain

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12
Q

What is the reticular system

A

Diffuse group of neurons within the medulla oblongata, pons, midbrain

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13
Q

What type of sensory information does the reticular system receive

A

Somatic and visceral, not specific sensation but general awareness, regulates breathing and heart rate, contributes to alertness and consciousness

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