Cross-Sectional Anatomy Flashcards
7 cards from real ARRT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Cross-Sectional Anatomy flashcards as text
On axial CT, the cisterna chyli is typically located at which vertebral level and position?
Answer: Anterior to L2-L3 between the aorta and IVC
The cisterna chyli is a lymphatic sac located anterior to the L1-L2 vertebral bodies, between the abdominal aorta and the inferior vena cava.
On axial CT of the knee, the iliotibial band is best identified at which location?
Answer: Lateral aspect of the knee, inserting on Gerdy's tubercle of the tibia
The iliotibial band runs along the lateral thigh and inserts on Gerdy's tubercle on the anterolateral tibia.
Which of the following describes the location of the zona incerta on axial CT brain images?
Answer: A thin band of gray matter between the lenticular fasciculus and the thalamic fasciculus in the subthalamus
The zona incerta is a subthalamic gray matter band situated between the lenticular and thalamic fasciculi.
On a sagittal CT reconstruction of the chest, the azygos vein is best identified by its arch over which structure?
Answer: The right main bronchus
The azygos vein arches over the right main bronchus before draining into the posterior superior vena cava.
On axial CT at the level of the umbilicus, which abdominal wall muscle is most lateral?
Answer: External oblique
The external oblique is the most superficial and lateral of the flat abdominal wall muscles, lying outside the internal oblique.
On axial CT of the head at the level of the fourth ventricle, which structure is immediately posterior to the fourth ventricle?
Answer: Cerebellum (vermis)
The cerebellar vermis forms the posterior wall of the fourth ventricle on axial CT images.
The right coronary artery is most reliably identified on axial CT in which anatomical groove?
Answer: Right atrioventricular (coronary) groove
The right coronary artery runs within the right atrioventricular groove between the right atrium and right ventricle.