Neuroanatomy: Brain stem

Question 1

3 regions of brain stem

Answer 1

Medulla oblongata, pons, midbrain (caudal to cranial)

Question 2

Medulla oblongata

Answer 2

Pyrimidal, continuous with spinal cord, olivary eminence. 2 areas where fibers cross. Includes cranial nerves 9 10 11 12.

Question 3

Pons

Answer 3

Bridge between medulla and midbrain, include pontine fibers, middle cerebellar peduncle, and floor of 4th ventricle. Includes cranial nerves 5 6 7 8

Question 4

Midbrain

Answer 4

Continuous with diencephalon, includes crus cerebri and tectum, and cerebral aqueduct. Includes cranial nerves 3 4

Question 5

Reticular formation

Answer 5

Group of neurons within pons and medulla that receives sensory information and projects to thalamus and cortex. Regulates breathing and heart rate