A patient has a tumor that secretes excess CRH (corticotropin-releasing hormone). The tumor is not located...
A patient has a tumor that secretes excess CRH (corticotropin-releasing hormone). The tumor is not located in the normal CRH-secreting structure and does not respond to the normal positive or negative stimuli for CRH. Will the following levels be normal, low or high?
a. Plasma cortisol
b. Plasma ACTH
c. CRH secretion by the hypothalamus (only consider the CRH secreted from the normal location, not the tumor-associated secretion for this question)
d. Plasma glucose
Homework Answers
Plasma cortisol will be high beacuse ectopically released CRH will act on adrenal gland to produce cortisol in excess amount.
Plasma ACTH and CRH secretion by hypothalamus will be low , beacuse excess cortisol will negatively regulate ACTH and CRH secretion.
Plasma glucose will be lower beacuse excess cortisol will cause excess metabolism of glucose.
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A patient has a tumor that secretes excess CRH
(corticotropin-releasing hormone). The tumor is not located...
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Table 1 Secretes releasing hormone, which are sent to the... Produced in Hypothalamus. but stored in the... _Pituitary Porror Pituitary Which stimulates production of... These hormones target these organs.... These hormones target these organs.... Word Bank: Adrenal Gland, Adrenocorticotropin Hormone (ACTH), Anterior, Anti-Diuretic Hormone (ADH), Bones, Corticotropin-Releasing Hormone (CRH), Follicle Stimulating Hormone (FSH), Gonadotropin-Releasing Hormone (GnRH) Growth Hormone (GH), Growth Hormone-Releasing Hormone (GHRH), Hypothalamus, Kidney, Luteinizing Hormone (LH), Mammary Glands, Muscle, Oxytocin, Ovaries, Posterior, Prolactin, Prolactin-Releasing...
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(LinkS to an external site. All of the above symptoms have been getting worse. Blood pressure is 170/110, respirations 12/min and some ankle edema (non-pitting) was noted. The limbs seem relatively thin and the trunk thickened, especially between the upper shoulder blades. Diagnosis was made of Cushing disease/syndrome. How could you differentiate between the two? Elevated levels of cortisol has two effects of plasma leading to increased volume: 1) up-regulation of receptors for aldosterone and 2) an increased effectiveness of...
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Question 3 (10 points) Based on the Underhills' stress levels that night, which of the following represent long-loop negative feedback mechanisms that you would expect in this case? Select TWO CRH stimulates cortisol ACTH stimulates CRH Part 1 Cortisol inhibits ACTH ACTH inhibits CRH Cast of Characters . Sam Garrison - Detective • Roma and Clint Underhill - The hot couple • Kavita Dickson - EMR paramedics • Larry Gonzales - Policeman T3 and T4 inhibit CRH T3 and T4...
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