Module 9: Endocrine System: Adrenal gland

Question 1

2 zones of adrenal glands

Answer 1

cortex (secretes corticosteroids, glucocorticoids, sex hormones, mineralcorticoids)
Medulla (synthesizes and secretes epinephrine and norepinephrine)

Question 2

Adrenal cortex

Answer 2

covered by capsule
divided into 3 zones:
-outer layer: zona glomerulosa; secretory cells arranged in small rounded clusters
-middle layer: Zona fasciculata; arranged in long rows; cells have foamy appearance due to cholesterol derivatives; secretes glucocorticoid hormones (cortisol)
-inner layer: zona reticularis; irregular network of cells, secrete androgens

Question 3

Adrenal medulla

Answer 3

secretes catecholamines

Called “chromaffin cells”