SUPRARENAL GLAND
- Also known as Adrenal gland.
- Paired Retroperitoneal organ.
- Located on the upper poles of the kidneys at the level of TII-TI2.
- The right adrenal gland is triangular in shape, and the left is semilunar.
- The right is situated more caudally than the left one.
- Weight ~ 4.2 - 5 g.
Vasculation:
Arterial blood supply:
- 1 Superior adrenal/suprarenal artery – from the inferior phrenic artery
- 2 Middle adrenal/suprarenal artery – from the abdominal aorta
- 3 Inferior adrenal/suprarenal artery – from the renal artery
Venous drainage: – suprarenal veins (on the right side into the inferior vena cava, on the left into the left renal vein)
Lymphatic drainage: lumbar nodes and posterior mediastinal nodes
Sympathetic and parasympathetic part of the autonomic nervous system, sensory: – adrenal/suprarenal plexus
Syntopy:
- 1 Cranially: diaphragm, subhepatic space
- 2 Caudally: upper pole of the kidney
- 3 Ventrally on the right side: liver
- 4 Ventrally on the left side: stomach
- 5 Ventrally on both sides: prerenal layer of the renal fascia, perirenal fat capsule
- 6 Dorsally: perirenal fat capsule, retrorenal layer of the renal fascia, pararenal fat body, diaphragm, costodiaphragmatic recess
- 7 Medially on the right side: inferior vena cava
- 8 Medially on the left side: abdominal aorta
- 9 Laterally: pararenal fat body