Brain - centers - Brain Stem

5 important questions on Brain - centers - Brain Stem

What is the name of the structure that has 4 domelike protrusions that come in pairs of the dorsal midbrain? What are each of the 4 protrusions called and what do they do?

Corpora quadrigemina
Superior pair = superior colliculi - coordinate eye & head movements
Inferior pair = inferior colliculi - response to sound

Why are the red nuclei of the midbrain called “relay nuclei” for descending motor pathways. What does this mean about their purpose?

that act as processing stations to receive, organize, and pass motor signals to down to efferent pathways

The major function of the medulla oblongata is to govern autonomic functions. What 3 functions is it the control centre for?

Cardiovascular control centre
Vasomotor centre
Respiratory centres
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In the pons region of the brainstem it is the origin of 3 cranial nerves. What are these nerves? What is the name of the net-like web of connected nerve cells that passes through the pons called? What are its 3 functions

Origin of cranial nerves V(trigeminal), VI (abducens), and VII (facial).
Reticular formation, functions;
  1. respiratory control w/ respiratory centres in medulla
  2. sleep
  3. consciousness

In the pons of the brainstem there is a similar structure to that found in the midbrain but it conveys information to and from cerebellum to the cerebral cortex. What is this structure called?

Nuclei, a group of 100 small cells that act as processing stations to receive, organize, and pass signals from the cerebellm to the celebral cortex

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