1. What organ is both an exocrine & endocrine gland? The pancreas is an exocrine gland because it releases digestive juices to complete the breakdown carbohydrates into the small intestine. The pancreas is also an endocrine because it has clusters of cell (islets of Langerhans) that secrete hormones such as glucagon & insulin directly into the blood stream. back to questions

2. How does radioactive iodine help cure Graves' disease? Graves' disease (exophthalmic or toxic goiter) can result from a thyroid gland that is overproducing the iodine-containing hromone thyroxine. The gland will rapidly absorb a dose of radioactive iodine, which will emit radiation that then selectively destroys the gland. back to questions

3. What condition do you have if you have an enlargement of the thyroid gland? A goiter is an enlarged thyroid which causes a swelling in thefront part of the neck. Simple goiter is caused by the lack of iodine in the diet. Although the administration of iodine will not cure simple goiter, it will prevent it or stop an existing goiter from enlarging. back to questions