3.0 neuro - brain stem Flashcards
What does the brain stem connect
Spinal cord to the diencephalon and cerebrum
What are the three regions of the spinal cord (superior to inferior)
Midbrain, Pons, Medulla oblongata
What landmarks are visible on the ventral surface of the medulla oblongata
Pyramid (medial), olivary eminence (lateral)
What cranial nerves are associated with the medulla oblongata
CN IX glossopharyngeal, CN X vagus, CN XII hypoglossal
What region of the brain stem forms the floor of the 4th ventricle
Pons
What is the middle cerebellar peduncle
Bundle of axons that connects the cerebellum to the cerebral cortex and pons
What cranial nerves are associated with the pons
CN V trigeminal, CN VI abducens, CN VII facial, CN VIII vestibulocochlear
What landmarks are present at the base of the midbrian
Crus cerebri, substantia nigra
What and where is the tectum
Roof of the midbrain, 2 superior and 2 inferior colliculi
What cranial nerves are associated with the midbrain
CN III oculomotor, CN IV trochlear
Which part of the brain stem does the cerebral aqueduct pass
Midbrain
What is the reticular system
Diffuse group of neurons within the medulla oblongata, pons, midbrain
What type of sensory information does the reticular system receive
Somatic and visceral, not specific sensation but general awareness, regulates breathing and heart rate, contributes to alertness and consciousness