1. Components ---small gland or endocrine cell: islet of pancreas and corpus luteum --endocrine gland Thyroid gland Parathyroid gland Adrenal gland Pituitary gland(hypophysis · Pineal body1. Components: ---small gland or endocrine cell: islet of pancreas and corpus luteum ---endocrine gland: • Thyroid gland • Parathyroid gland • Adrenal gland • Pituitary gland(hypophysis) • Pineal body