Blood Supply, Hemorrhage, and Herniation Flashcards
The internal carotid a. is broken up into four parts based on location. Which of the following parts of the internal carotid a. is surrounded by the sympathetic plexus, CN III, CN IV, CN VI and CN V1?
A. Cervical Part
B. Petrous Part
C. Cavernous Part
D. Cerebral Part
Cavernous Part
The cervical portion of the vertebral A. travels through which of the follwoing?
A. Vertebral Foramen of C1-C7
B. Transverse Foramen of C1-7
C. Transverse Foramen of C1-6
D. Vertebral Foramen of C1-C6
Transverse Foramen of C1-6
There are 3 parts of the Vertebral A. which of the following portions perforates the dura and arachnoid mater and passes through the foramen magnum?
A. Cervical Part
B. Atlantic Part
C. Intercranial Part
Atlantic Part
At which of the following strutures do the two vertebral arteries come unite to form the basilar A. ?
A. Open Medulla
B. Pons
C. Midbrain
D. Closed Medulla
Pons
Which of the following correctly explains how Vertebral Basilar Insufficiency can occur? (select all that apply)
A. Occulusion of the subclavian A. proximal to where the vertebral A. comes off
B. Occlusion of the Subclavian A. distal to where the vertebral A. comes off
C. Extreme hyperextension of the head
D. Extreme head rotation (Bow-Hunters Syndrome)
C. Extreme hyperextension of the head
D. Extreme head rotation (Bow-Hunters Syndrome)
Subclavian Steel Syndrome is when the subclavian a. “steals” blood from the brain, and instead of supplying it, blood flow is shunted to the contralateral subclavian a.. Which of the following correctly expresses how this phenomenon occurs?
A. Occulusion of the subclavian A. proximal to where the vertebral A. comes off
B. Occlusion of the Subclavian A. distal to where the vertebral A. comes off
C. Extreme hyperextension of the head
D. Extreme head rotation (Bow-Hunters Syndrome)
Occulusion of the subclavian A. proximal to where the vertebral A. comes off
The arteries and nerves of the brain have certain relationships that have clinical significance. Formation of anyeursms or abberrent loops of arteries near the respective CNs can lead to cranial nerve pathologies. Which of the following arteries is found near CN II?
A. Superior Cerebellar A.
B. Posterior Cerebral A., Superior Cerebellar A., and Posterior COmmunicating A.
C. Internal Carotid A, Anterior Cerebral A., and Anterior Communicating A.
D. Anterior Inferior Cerebellar A.
E. Labyrinthine A. (Internal Acoustic A.) and Anterior Inferior Cerebellar A.
Internal Carotid A, Anterior Cerebral A., and Anterior Communicating A.
The arteries and nerves of the brain have certain relationships that have clinical significance. Formation of anyeursms or abberrent loops of arteries near the respective CNs can lead to cranial nerve pathologies. Which of the following arteries is found near CN III?
A. Superior Cerebellar A.
B. Posterior Cerebral A., Superior Cerebellar A., and Posterior COmmunicating A.
C. Internal Carotid A, Anterior Cerebral A., and Anterior Communicating A.
D. Anterior Inferior Cerebellar A.
E. Labyrinthine A. (Internal Acoustic A.) and Anterior Inferior Cerebellar A.
Posterior Cerebral A., Superior Cerebellar A., and Posterior COmmunicating A.
CN III is sandwiched between these three arteries
The arteries and nerves of the brain have certain relationships that have clinical significance. Formation of anyeursms or abberrent loops of arteries near the respective CNs can lead to cranial nerve pathologies. Which of the following arteries is found near CN VI?
A. Superior Cerebellar A.
B. Posterior Cerebral A., Superior Cerebellar A., and Posterior COmmunicating A.
C. Internal Carotid A, Anterior Cerebral A., and Anterior Communicating A.
D. Anterior Inferior Cerebellar A.
E. Labyrinthine A. (Internal Acoustic A.) and Anterior Inferior Cerebellar A.
Labyrinthine A. (Internal Acoustic A.) and Anterior Inferior Cerebellar A.
The Abducen’s N. is sandwiched between these arteries
The arteries and nerves of the brain have certain relationships that have clinical significance. Formation of anyeursms or abberrent loops of arteries near the respective CNs can lead to cranial nerve pathologies. Which of the following arteries is found near CN V?
A. Superior Cerebellar A.
B. Posterior Cerebral A., Superior Cerebellar A., and Posterior COmmunicating A.
C. Internal Carotid A, Anterior Cerebral A., and Anterior Communicating A.
D. Anterior Inferior Cerebellar A.
E. Labyrinthine A. (Internal Acoustic A.) and Anterior Inferior Cerebellar A.
Superior Cerebellar A.
Formation of abberent loops in the Superior Cerebellar A. will lead to Trigeminal nerve issues
The arteries and nerves of the brain have certain relationships that have clinical significance. Formation of anyeursms or abberrent loops of arteries near the respective CNs can lead to cranial nerve pathologies. Which of the following arteries is found near CN VII?
A. Superior Cerebellar A.
B. Posterior Cerebral A., Superior Cerebellar A., and Posterior COmmunicating A.
C. Internal Carotid A, Anterior Cerebral A., and Anterior Communicating A.
D. Anterior Inferior Cerebellar A.
E. Labyrinthine A. (Internal Acoustic A.) and Anterior Inferior Cerebellar A.
Anterior Inferior Cerebellar A.
abberent loops cause issues with the Facial N.
The Anterior Spinal A. comes off the _________ to supply what two structures, the ________ and the _______
The Anterior Spinal A. comes off the vertebral A. to supply what two structures, the Spinal Cord and the Medulla
The Posterior Inferior Cerebellar A (PICA), and the Anterior Vertebral A. both come off the Vertebral A.. The PICA comes off laterally and gives off what artery?
What 2 structures does it supply?
Posterior Spinal A.
Spinal Cord and Medulla
All of the following arteries come directly off the Vertebral A. except?
A. Posterior Inferior Cerebellar A.
B. Anterior Spinal A.
C. Posterior Spinal A.
D. None of the above come off directly
Posterior Spinal A.
comes off the PICA
Which of the following arteries gives off the Superior Cerebellar A. ?
A. Middle Cerebral A.
B. Basilar A.
C. Anterior Choroidal A.
D. Pontine arteries
E. Lenticulostriate arteries
Basilar A.
What major artery comes directly off the ICA but is NOT part of the circle of willis?
A. Middle Cerebral A.
B. Basilar A.
C. Anterior Choroidal A.
D. Pontine arteries
E. Lenticulostriate arteries
Middle Cerebral A.
Select all of the following arteries that are branches off the Middle Cerebral A.?
A. Superior Cerebellar A.
B. Basilar A.
C. Anterior Choroidal A.
D. Pontine arteries
E. Lenticulostriate arteries
Lenticulostriate arteries
Anterior Choroidal A.
Which of the following portions of the Middle Cerebreal A. gives off branches on the Insula?
A. M1
B. M2
C. M3
D. M4
M2
Border zones are the locations on the brain where the terminal branches of the Anterior, Middle, and Posterior Cerebral As go. These areas are incredibly vulnerable to damage.
The Anterior Cerebral A. is divided into 5 segments. Which of these segments is caudal to the corpus callosum?
A. A1
B. A2
C. A3
D. A4
E. A5
A5
ACA ends posterior to the corpus callosum
A5= Postcallosal
Which of the following parts of the ACA goes from the ICA to anterior communicating A.?
A. A1
B. A2
C. A3
D. A4
E. A5
A1
A1= Precommunicating Segment