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Adrenal Glands Anatomy

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Adrenal Glands Anatomy

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Adrenal glands are a pair of important
Endocrine glands situated on the
posterior abdominal wall over the upper
pole of kidneys behind the peritoneum.

 LOCATION;
Epigastrium, at the upper pole of kidney.
Infront of the crus of the diaphragm,opposite the vertibral
end of the11th intercostal space and12th rib.

 SIZE, SHAPE AND WEIGHT
Length-50mm
Bredth-30mm
Thickness-10mm and
Weight-5g
Rt-Triangular or Pyramidal
Lt-Semilunar

Adrenal glands are a pair of important
Endocrine glands situated on the
posterior abdominal wall over the upper
pole of kidneys behind the peritoneum.

 LOCATION;
Epigastrium, at the upper pole of kidney.
Infront of the crus of the diaphragm,opposite the vertibral
end of the11th intercostal space and12th rib.

 SIZE, SHAPE AND WEIGHT
Length-50mm
Bredth-30mm
Thickness-10mm and
Weight-5g
Rt-Triangular or Pyramidal
Lt-Semilunar

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Adrenal Glands Anatomy

  1. 1. ANATOMY OF ADRENAL GLANDS By- Dr. Geeta Dolli Associate Professor
  2. 2. ADRENAL (SUPRARENAL) GLAND Adrenal glands are a pair of important Endocrine glands situated on the posterior abdominal wall over the upper pole of kidneys behind the peritoneum.
  3. 3.  LOCATION; Epigastrium, at the upper pole of kidney. Infront of the crus of the diaphragm,opposite the vertibral end of the11th intercostal space and12th rib. SIZE, SHAPE AND WEIGHT Length-50mm Bredth-30mm Thickness-10mm and Weight-5g Rt-Triangular or Pyramidal Lt-Semilunar SHEATHS: Areolar tissue+fat, perirenal fascia
  4. 4. RIGHT ADRENAL GLAND  The Right Adrenal Gland is triangular in shape Apex- Bare area of liver  Base- Upper pole of right kidney  Surfaces 2 in Number • Anterior surface- Inferior vena cava, Right lobe of liver, duodenum • Posterior surface- Right crus of diaphragm  Borders 3 in number • Anterior- hilum, suprarenal vein • Medial- Right coeliac ganglion, right inferior phrenic artery • Lateral- Liver
  5. 5. LEFT ADRENAL GLAND  The Left Adrenal Gland is semi- circular in shape  2 Ends  Upper- Posterior end of spleen  Lower- Hilum, left suprarenal vein  2 Surfaces  Anterior- stomach,splenic artery, pancreas  Posterior- Kidney, Left crus of diaphragm  2 Borders  Medial- Left coeliac ganglion, left inferior phrenic artery,left gastric artery  Lateral- Stomach
  6. 6. STRUCTURE OF ADRENAL GLAND  ANATOMY OF ADRENAL GLANDS  The adrenal glands are paired bodies lying cranial to the kidneys within the retroperitoneal space.  The glands consist of two layers; I. cortex II. medulla
  7. 7. The adrenal cortex is red to light brown in colour and is composed of three zones. From the outer to inner, the layers are; 1. zonaglomerulosa 2. zonafasciculata 3. zonareticularis The adrenal cortex represents 80- 90% of the adrenal gland. The adrenal medulla represents only 10-20% of the adrenal gland.
  8. 8. • The adrenal glands are firm, and their capsule is easily fractured on flexion. The cortex on appearance is yellow and radially striated, whilst the medulla is darker with a more uniform appearance. • The zonaglomerulosa is narrow and the cells are in a whorled pattern. • The zonafasiculata is wide and the cells lie in columns and the zonareticularis is more randomly organised.
  9. 9. Cortex Medulla Catecholamine Zona reticularis Sex hormones Zona fesciculata Glucocorticoids Zona glomerulosa Mineralocorticoids
  10. 10. BLOOD SUPPLY Arteries • Superior suprarenal artery • Middle suprarenal artery • Inferior suprarenal artery Veins • Right suprarenal vein • Left suprarenal vein
  11. 11. LYMPHATIC DRAINAGE AND NERVE SUPPLY Lymphatic drainage • Lumbar lymph nodes Nerve supply • Preganglionic sympathetic fibers • Postganglionic sympathetic fibers- chromaffin cells
  12. 12. APPLIED ANATOMY Addison’s disease Cushing’s syndrom Adrenogenital syndrom Adrenalectomy Phaeochromocytoma Ectopic sites Masculinisation/ Feminisation

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