E4 Brainstem

Question 1

What is the reticular formation?

Answer 1

A central core of nuclei that runs through the entire length of the brainstem

Question 2

Where is the rostral reticular formation? Caudal reticular formation?

Answer 2

Midbrain and upper pons.

Pons and medulla

Question 3

What does the Rostral reticular formation regulate?

Answer 3

Alertness, state of consciousness, and the sleep wake cycle

Question 4

Thru what does the RRF perform its function?

Answer 4

Ascending reticular activating system (ARAS)

Question 5

Via what does the ARAS project to many cortical regions?

Answer 5

Thalamic nuclei

Question 6

What is a classic sign of a lesion to the rostral reticular formation?

Answer 6

Coma

Question 7

What is the caudal reticular formation involved in?

Answer 7

Important motor, reflex and autonomic functions

Question 8

Which arterial system supplies the structures of the brainstem?

Answer 8

Vertebral artery

Question 9

What is the blood supply to the caudal medulla?

Answer 9

Posterior spinal artery, Vertebral artery and Ant. Spinal Artery

Question 10

What is the blood supply to the rostral medulla?

Answer 10

Vertebral artery and PICA, Anterior Spinal artery

Question 11

What is the blood supply to the caudal pons?

Answer 11

Basilar artery and AICA

Question 12

What is the blood supply to the mid to rostral pons?

Answer 12

Basilar artery

Question 13

What is the blood supply to the midbrain?

Answer 13

Sup. Cerebellar artery and Posterior Cerebellar Artery, and Basilar artery