Adrenal gland:
- Adrenal gland in fishes is quite different from that of mammals. The two components of adrenal gland i.e. cortex and medulla are separately found.
- Location: One of three layers of cells lying along cardinal veins in the region of the hemapoietic head kidney.
- Origin: Mesodermal layer of embryo
- Secretion: Adrenaline, Cortisol
Function:
- Promote utilization of steroid fat
- Carbohydrate metabolism
- Water metabolism
- Protein catabolism
- Sodium retention
- Electrolyte metabolism