So the negative feedback works to keep the blood

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
sending this message (insulin), the cells in the body stop taking extra glucose out of the blood. So the negative feedback works to keep the blood glucose level normal. If glucose is high, the pancreas makes insulin. The insulin causes the glucose to fall. Then this lower level of glucose tells the pancreas to stop making insulin
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Introduction to Hormones/Pituitary Function/Adrenal Function – Objectives 3. Describe the clinical utility of each of the following hormones: Growth Hormone, Prolactin, Oxytocin, Vasopressin, ACTH, Aldosterone, Cortisol, DHEAS, Testosterone GROWTH HORMONE – Increases in GH indicate acromegaly, pituitary tumors, gigantism, and pregnancy; Decreases in GH indicate pituitary GH deficiency, hypopituitarism (congenital or acquired), GH secretory dysfunction, and dwarfism PROLACTIN – primarily used in diagnosing and managing pituitary adenomas and the differential diagnosis of male and female hypogonadism; Increases indicate hypothalamic or pituitary tumors, stress, antidepressants, and breast feeding; Decreases indicate bromocriptine (dopamine agonist) OXYTOCIN – has a critical role in lactation and plays a major role in inducing labor; Pitocin is a synthetic oxytocin used in obstetrics to induce labor VASOPRESSIN – (ADH) Antidiuretic hormone; has an essential role in water balance since it’s action is to regulate renal free water excretion; as plasma osmolality increases, vasopressin secretion increases – the consequence is a reduction in renal free water clearance, a lowering of plasma osmolality, and a return to homeostasis; vasopressin is releases in response to a fall in blood volume or blood pressure; Diabetes insipidus (DI), characterized by copious production of urine (polyuria) and intense thirst (polydipsia), is a consequence of vasopressin deficiency; diabetes insipidus vasopressin deficiency is characterized by intense thirst, polyuria, glucose negative, and low specific gravity ACTH – Adrenocorticotropin hormone; regulates adrenal steroidogenesis; ACTH acts on the cells of the adrenal cortex, stimulating them to produce glucocorticoids (like cortisol) mineralocorticoids (like aldosterone) and androgens (male sex hormones, like testosterone) Production of ACTH depends on the intermittent arrival of corticotropin- releasing hormone (CRH) from the hypothalamus; hypersecretion of ACTH is a frequent cause of Cushing's Syndrome; deficiencies in ACTH can cause Addison’s disease (secondary) CORTISOL – Increase – ectopic ACTH syndrome, ectopic CRH syndrome, adrenal adenoma/ carcinoma, adrenal macronodular hyperplasia, stress, Cushing’s syndrome; Decrease – Addison’s disease, pituitary dysfunction ALDOSTERONE – used to assess adrenal aldosterone production, to diagnose primary
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern