NU 126 exam 5 Practice Questions and Answers

NU 126 exam 5 Practice Questions and Answers what are the 8 major hormone secreting glands? - Ans:-hypothalamus pineal pituitary thyroid parathyroid thymus adrenal islets of langerhans Where are the parathyroid glands located? - Ans:-posterior surface of the thyroid gland what are the major thyroid hormones - Ans:-T3 , T4 and calcitonin what do T3 and T4 represent - Ans:-iodine molecules ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/22 what is the function of T3 and T4 - Ans:-increase metabolism what stimulates T3 and T4 - Ans:-decreased metoblism what is the function of calcitonin - Ans:-Lowers blood calcium levels lower reabsorption from bones to blood An iodine deficiency can cause: - Ans:-altered thyroid function What is negative feedback? - Ans:-TSH controls the rate in which thyroid releases thyroid hormone through a negative feedback system If TSH is low, what are T3 and T4 - Ans:-high Where is TSH released from? - Ans:-anterior pituitary Where is TRH released from? - Ans:-hypothalamus what is the process of thyroid hormone secretion? - Ans:-TRH - TSH- T3+T4 hypothalamus- anterior pituitary- thyroid what should you do if the thyroid is enlarged upon assessment? - Ans:-auscultate what is a goiter and how may it be caused - Ans:-enlarged thyroid ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/22 commonly occurs with iodine deficiency what does a goiter cause - Ans:-increased TSH, low levels of circulating thyroid hormones fine needle biopsy - Ans:-procedure that uses a fine needle to take a small sample of tissue from a thyroid nodule seen on a thyroid scan Thyroid scan - Ans:-scanner detects radioactivity and visualizes the thyroid gland radioactive iodine uptake - Ans:-Test to measure the amount of radioactive iodine taken up by the thyroid gland; indicator of thyroid gland function. if a patient has hyperthyroidism what would you expect from a radioactive iodine uptake - Ans:-high uptake of iodine if a patient has hypothyroidism what would you expect from a radioactive iodine uptake - Ans:-low uptake of iodine PT teaching prior to radioactive iodine uptake - Ans:-stop any thyroid meds for 2 weeks before test as meds interfere with the test what type of allergy may a patient react poorly to iodine? - Ans:-shellfish What is hypothyroidism? - Ans:-hypo secretion of thyroid hormones (T3 and T4) resulting in decreased metabolic rate ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 4/22 what causes hypothyroidism - Ans:-hashimotos, RAI, thyroidectomy primary hypothyroidism - Ans:-abnormality in the thyroid gland itself -unable to produce adequate amounts of thyroid hormone (hashimotos) secondary hypothyroidism - Ans:-failure of the pituitary gland to secrete TSH tertiary hypothyroidism - Ans:-failure of the hypothalamus to secrete thyroid stimulating hormone what would you expect the thyroid hormones to look like in a patient with hypothyroidism? - Ans:- decreased T3 and T4 levels and elevated TSH What is levothyroxine used for? - Ans:-Hypothyroidism Levothyroxine dosing - Ans:-based on TSH level