Hypothalamus secretes the releasing hormones and the inhibitory hormones into:

1. posterior pituitary 2. thalamus
3. hypophyseal portal veins 4. axons of the infundibulum

Subtopic:  Adenohypophysis & Hypothalamus |
 59%

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Cushing's syndrome is characterized by all the following except:
1. moon face and buffalo hump
2. under-secretion of ACTH
3. easy bruising
4. hyperglycemia

Subtopic:  Pituitary & Hypothalamus |

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Tropin is a hormone that induces the secretion of other hormones. Identify the tropin produced by the anterior pituitary that does not cause the release of another hormone by stimulating another endocrine gland?

1. Corticotropin 2. Thyrotropin
3. Prolactin 4. Gonadotropin
Subtopic:  Prolactin & Posterior Pituitary |
 65%

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Thyroxine and triiodothyronine:
1. are synthesized by stratified cuboidal epithelial cells called follicular cells
2. are very soluble in water and therefore easily soluble in the bloodstream
3. are synthesized and secreted by parafollicular cells
4. are ultimately formed from the amino acid, L-tyrosine

Subtopic:  Thyroid Gland Part I |

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Which of the following correctly describes the role of cAMP and the hormones employing it?
1. binding site; nonsteroid
2. membrane receptor; steroid
3. activity site; G protein
4. second messenger; nonsteroid

Subtopic:  Mechanism of Hormone Action |
 81%

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Hydrophilic hormones are not characterized by the fact that:
1. They can act through intermediary G proteins.
2. A second messenger (e.g. cAMP) is often involved.
3. They can work by activation of transmembrane receptor proteins.
4. They have a long duration of action (e.g. days).

Subtopic:  Mechanism of Hormone Action |

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A decrease in blood glucose is most likely to result in:
1. decreased insulin and glucagon production.
2. increased glucagon production.
3. glycogen being released into the blood.
4. increased glucagon production followed by glucose release from the liver.

Subtopic:  Pancreas: I |
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When dehydration occurs, the response of the human body would be that:
1. More ADH is secreted.
2. Urine will become less concentrated.
3. Diuretic hormone will be secreted.
4. The urine output will increase.

Subtopic:  Prolactin & Posterior Pituitary |
 78%
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A person has weight loss, nervousness, tachycardia and intolerance to heat. He may be suffering from:

1. hypothyroidism 2. diabetes
3. cretinism 4. hyperthyroidism
Subtopic:  Thyroid Gland Part I |
 66%

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One of the reasons for iodine to be a part of a balanced diet would be:
1. Iodine is needed for an enzyme that facilitates the synthesis of thyrotropin-releasing hormone (TRH).
2. The thyroid gland cannot produce thyroxine without iodine, which leads to the goiter condition.
3. Iodine is necessary for the proper functioning of the thyroid, adrenals and pancreas.
4. The iodine is needed for positive feedback to the hypothalamus and the anterior pituitary to stimulate the thyroid to produce more thyroxine. This in turn prevents the goiter condition.

Subtopic:  Thyroid Gland Part I |
 61%
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