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49 Cards in this Set
- Front
- Back
The hypothalamus controls the ____.
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pituitary
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The hypothalamus operates on the principle of ____ feedback.
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negative
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The ____ secretes stimulating and inhibiting hormones.
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hypothalamus
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The anterior pituitary secretes these 6 hormones.
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1. TSH
2. ACTH 3. GH 4. FSH/LH 5. prolactin |
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Posterior pituitary secretes these two hormones.
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1. oxytocin
2. ADH |
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What are the two endocrine glands that are not under hypothalamic control?
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1. parathyroid glands
2. pancreas |
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Which gland is called the master gland due to its influence over so much of the body's functioning?
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pituitary gland
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All the other glands depend on the secretions of this gland for stimulation.
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pituitary gland
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Thyroid stimulating hormone stimulates the thyroid to secrete?
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T3 and T4
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T3 and T4 controls the metabolism of ____, ____, ____ and affects ____, ____, ____, and ____.
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CHO, fats, protein, CV, neuro, GI, reproductive functioning
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ACTH stimulates the adrenal medulla to secrete what two hormones?
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epinephrine, norepinephrine
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ACTH stimulates the adrenal cortex to secrete ____, ___, and ___.
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cortisol, mineralcorticoids (Aldosterone), androgens
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Cortisol does what 3 things?
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Stimulates gluconeogenesis, decreases inflammation, and suppresses immune response
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What does aldosterone do?
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Increased reabsorption of sodium and water with increased excretion of potassium
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PTH does what?
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maintains serum calcium levels
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80-90% are pituitary adenomas which produce at least one pituitary hormone such as ___, ___, and ___.
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growth hormone, prolactin, ACTH
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Signs and symptoms of a pituitary adenoma:
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-headaches
–loss of peripheral vision –unstable temperature –neurological manifestations, emotional changes -hydrocephalus -signs associated with excessive growth hormone, prolactin, ACTH |
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Drug therapy for pituitary adenomas is ___.
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bromocriptine
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With bromocriptine monitor for ___.
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hypertension
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Which hormone is of greatest concern after a transphenoidal hypophysectomy?
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cortisol
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After a transphenoidal hypophysectomy, which 3 hormones may need to be replaced?
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cortisol, ADH, thyroid hormone
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Medication to treat acromegaly?
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octreotide
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Medication to treat hyperprolactinemia?
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bromocriptine
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This medication is used for chronic SIADH.
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demeclocycline
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Surgery for a pituitary adenoma is called?
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transphenoidal hypophysectomy
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Which hormone is of greatest concern post-op for a transphenoidal hypophysectomy?
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cortisol
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___ which inhibits prolactin secretion is used for hyperprolactinemia.
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bromocriptine
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5 S/S of hyperprolactinemia:
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1. galactorrhea
2. decreased libido 3. erectile dysfunction 4. menstrual irregularities 5. decreased visual fields |
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Medication for pituitary DI?
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desmopressin (DDAVP)
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Acute SIADH is treated with?
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hypertonic saline (3%)
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Chronic SIADH is treated with?
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-fluid restriction
-high sodium diet -Lasix -demeclocycline (blocks the action of ADH) |
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What medications are used to treat SIADH?
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demeclocycline, Lasix
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S/S of hypothyroidism?
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-mental retardation in infants
-intolerant to cold, low temperature, dry skin, dry hair -increased interstitial fluid (myxedema) -*increased cholesterol and TG -*anemia -bradycardia, enlarged heart, hypotension -apathy, slow speech, lethargy, parasthesia -reproductive abnormalities -goiter, may or may not be present |
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In hypothyroidism, TSH is ___ and T3 and T4 are ___.
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elevated, decreased
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Medication for hypothyroidism?
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levothyroxine (synthroid)
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FACT:
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Synthroid is best absorbed if taken on an empty stomach.
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FACT:
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Iron interferes with the absorption of Synthroid.
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S/S of hyperthyroidism:
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-goiter
-increased body temperature, intolerant to heat -increased appetite, weight loss, weakness, diarrhea -decreased cholesterol and TG -tachycardia, increased BP, CHF, *A-fib, DOE, CP -nervousness, restless, insomnia, tremors -osteoporosis -exophthalmos (volume expansion of muscle tissue) -altered reproductive function |
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In hyperthyroidism TSH levels are ___ and T3 and T4 levels are ___.
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decreased, elevated
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Medications used for hyperthyroidism?
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1. Lugol's solution
2. BB 3. thioamides (PTU, tapazole) |
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What is the risk of thioamides (PTU, tapazole)for hyperthyroidism?
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agranulocytosis
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Radioactive iodine therapy is used in ___.
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hyperthyroidism
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S/S of hypoparathyroidism:
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-tetany
-laryngospasms -seizures -EKG changes |
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Pathophysiology of hyperparathyroidism:
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-hypercalcemia
-osteoporosis -kidney stones -peptic ulcer disease |
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FACT:
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Cortisol itself possesses mineralcorticoid activity; therefore, cortisol excess results in characteristic signs and symptoms of increased mineralcorticoid activity.
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FACT:
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Watch for signs of DVT in Cushing's disease.
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A tumor of the adrenal medulla which secretes (hypersecretion) epinephrine/norepinephrine causes this condition.
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pheochromocytoma
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What does pheochromocytoma cause?
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Severe hypertension not responsive to meds.
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Hyposecretion of cortisol and aldosterone results in this disease?
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Addison's disease
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