Medulla

Question 0

Preolivary sulcus

Answer 0

Separates the pyramid from the olive and contains the hypoglossal XII CN

Question 1

Pyramid

Answer 1

Pair of elongated elevations on either side of the anterior median. Bound laterally by the olive.

Question 2

Olive

Answer 2

Bound medically by the preolivary sulcus and laterally by the postolivary sulcus

Question 3

Anterior median sulcus

Answer 3

Separates the two pyramids and terminates in the inferiorly in the pyramidal decussation

Question 4

Cranial nerve XII hypoglossal

Answer 4

In preolivary sulcus between pyramid and olive on the medulla

Question 5

Cranial nerve XI Accessory

Answer 5

Inline with the vagus CN but inferior to the postolivary sulcus. Most inferior CN

Question 6

Cranial nerve X Vagus

Answer 6

Superior to the accessory CN. Found in postolivary sulcus

Question 7

Cranial nerve IX Glossopharyngeal

Answer 7

Superior to CN X Vagus. Most superior CN in the postolivary sulcus

Question 8

Posterior median sulcus

Answer 8

Found on he posterior side of the medulla. Divides the two lateral halfs

Question 9

Gracile tubercle

Answer 9

Most medial tubercle next to the posterior median sulcus on the medulla. Bound laterosuperially by the cuneate tubercle

Question 10

Cuneate tubercle

Answer 10

Lateral to the gracile tubercle on the posterior medulla

Question 11

Floor of the 4th ventricle

Answer 11

Caudal tail of the fourth ventricle is the obex found directly superior to the posterior median sulcus

Question 12

Inferior cerebellar peduncle

Answer 12

Connects the medulla to the cerebellum