T3, T4, TSH {Ans: Diagnosing hypo/hyperthyroidism T3/T4 = thyroid. TSH = Pituitary. T3/T4 abnormality = problem with THYROID. T3/T4 normal + TSH abnormal = Secondary thyroid problem If too much T3/T4, then TSH will be down. Vice Versa.}The nurse is teaching staff about the most common cause of Down syndrome. What is the nurse describing? {Ans: Answer: Maternal nondisjunction}adrenal cortex {Ans: outer section of each adrenal gland; secretes cortisol, aldosterone, and sex hormones}How are potassium and sodium transported across plasma membranes? {Ans: Answer: By adenosine triphosphate enzyme (ATPase)}metabolism, temperature {Ans: Thyroid produces hormones T3, T4, and plays big role in __, ___ regulation and growth and development}Addison's {Ans: ___ symptoms: brownish hyperpigmentation of skin diarrhea, nausea hyponatremia d/t low aldosterone levels --> hyperkalemia hypoglycemia d/t low cortisol low bp, risk for vascular collapse going into shock}