4 - KUB and Adrenals 2026

Psoas major

Also known as the muscle of the loin

L1-L4

Nerve roots of the lumbar plexus

Iliohypogastric nerve

(L1)

Supplies the skin of the lower part of the anterior abdominal wall

Ilioinguinal nerve

(L1)

Supplies the skin of the groin and the scrotum/labia majora

Genitofemoral nerve

(L1-L2)

What nerve is associated with the cremasteric reflex?

Lateral femoral cutaneous nerve

(L2-L3)

Supplies the skin over the lateral surface of the thigh

Femoral nerve

(L2-L4)

Largest branch of the lumbar plexus and supplies the muscles of the anterior thigh

Obturator nerve

(L2-L4)

Supplies the medial thigh muscles

L4-S3

Nerve roots of the sciatic nerve

L2

Hilum of the kidney is at what vertebral level

Perirenal fat

Renal fascia / Gerota's fascia

Pararenal fat

3 coverings of the kidney (from inner to outer)

Renal vein

Renal artery

Renal pelvis

3 structures that enter the renal hilum (anterior to posterior)

Lateral border of the erector spinae

Inferior edge of the 12th rib

Renal angle is formed by what structures

Inferior part

The renal fascia encloses the kidney and suprarenal glands, except for which part of the kidney?

Renal pelvis

It is the upper expanded end of the ureter

Medulla

Part of the kidney that contains the Henle's loops and collecting tubules

Cortex

Part of the kidney that contains the renal corpuscles, PCT, and DCT

Right renal artery

Which renal artery is longer and passes posterior to the IVC

Left renal vein

Which renal vein is longer

External Iliac artery

During renal transplantation, the Renal artery is anastomosed to what vessel?

External Iliac vein

During renal transplantation, the Renal vein is anastomosed to what vessel?

Renal nutcracker syndrome

What condition is a result of the compression of the left renal vein in the aorta-SMA angle

Intermediate mesoderm

Embryonic origin of the adrenal cortex

Neural crest

Embryonic origin of the adrenal medulla

Right adrenal

Triangular-shaped adrenal gland

Left adrenal

Crescent/Lunar-shaped adrenal

Adrenal medulla

Part of adrenal gland that secretes epinephrine and norepinephrine

Zona glomerulosa

Which adrenal zone secretes aldosterone

Zona fasciculata

Which adrenal zone secretes glucocorticoid

Zona reticularis

Which adrenal zone secretes sex hormones

Superior adrenal artery (from the inferior phrenic artery)

Middle adrenal artery (from the abdominal aorta)

Inferior adrenal artery (from the renal artery)

Suprarenal arteries arise from 3 redundant sources

IVC

Right adrenal vein drains to what structure?

Left renal vein

Left adrenal vein drains into what structure