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Flashcards in Brain Stem Deck (6)
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1
Q

How is motor information carried from the primary motor cortex through the brainstem?

A

Midbrain: In the ventral Crus Cerebri
Pons: In the Pontine nuclei which are amongst the pars basilaris (containing cranial nerve nuclei)
Medulla: Pyramids, where pyramidal tracts are found and the neurons decussate

2
Q

How is pain and temperature information travel up the brainstem?

A

Through the tegmentum of all three sections.

3
Q

How is touch and pressure conveyed in the brainstem?

A

Touch and pressure fibres terminate in gracile and cuneate nuclei in the posterior medulla, then from there travel up the tegmentum in all sections.

4
Q

What structure is located in the midbrain?

A

The substantia nigra, which contains dopamine producing cells which communicate with the basal ganglia

5
Q

What are the corpora quadrigemina and what do they do?

A

Superior colliculi- visual attention

Inferior colliculi- auditory attention

6
Q

What are the three structures found in the posterior part of the pons behind the tegmentum?

A

The three cerebellar peduncles which communicate with the cerebellum