adrenal medulla

Function

• catecholamine secreting portion of adrenal gland

Structure

• lies deep to the adrenal cortex, in the center of the adrenal gland

Histology

• composed of
  • large pale staining epithelioid cells
    • chromaffin cells organized in ovoid clusters & short interconnecting cords
  • connective tissue
  • sinusoidal capillaries
  • ganglion cells
  • nerves

More general terms

• endocrine gland

Component of

• adrenal (suprarenal) gland