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Suprarenal Gland(Anatomically)

Nur Athirah binti Mohd Azhar D11A024Nur Alyaa binti Khairil AnwarD11A023

Paired Lie in the abdominal cavity close to the

craniomedial border of the kidneys Located in a retroperitoneal position at

the roof of abdomen. Superior to kidney (renal) but have no

functional relationship with kidney. Surrounded by adipose tissue and renal

fascia. The connective tissue capsule extends into the gland as thin trabeculae of loose vascular reticular connective tissue.

Known as adrenal gland

Structure of Suprarenal Gland

Properties Divided into1. Outer cortex (derived from

mesenchyme)2. Inner medulla (derived from

neural crest cells)

These parts are responsible in hormonal regulation, according to their histological structure :

- Medulla :- Cortex : corticosteroid,

androgen

CORTEX Produce 3 main groups of hormones1. Glucocorticoids (regulate

carbohydrate metabolism)2. Mineralocorticoids (maintain

electrolyte concentration in the ECF)3. Androgens (posses the same

masculinizing effect as testosterone)

MEDULLA Norepinephrine,

epinephrine ( fight or flight responses)

Blood supply comes from three arteries ;

- superior suprarenal artery from inferior phrenic artery- middle suprarenal artery from abdominal artery- inferior suprarenal artery from renal artery

Left adrenal gland of a pig

<<<< paramedian section

Outer Surface>>>>

ADRENAL GLAND IN DIFFERENT SPECIES

Right adrenal Gland of an ox

Outer surface>>>>

<<<< Paramedian section