Endocrine organ histology Thi pitutary gland Pituitary gland Pituitary lobe cell (EM) The thyroid gland Thyroid gland Thyroid gland (EM) The adrenal glands Adrenal cortex 1 (EM) Adrenal cortex 2 (EM) Adrenal gland Adrenal marrow (EM)