Questão 1
Questão
All of the following are nonsteroid hormones except:
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oxytocin
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calcitonin
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cortisol
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glucagon
Questão 2
Questão
Which of the following is not a characteristic of the endocrine system?
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Chemical messenger travels short distance.
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Effector tissues include virtually all tissues.
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Characteristics of regulatory effects are slow to appear and long-lasting.
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Receptors are located on the plasma membrane or within the effector cell.
Questão 3
Questão
All of the following are true statements except:
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there are at least 16 different prostaglandins
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the first prostaglandin was identified in semen
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aspirin produces some of its effects by increasing PGE synthesis
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PGFs have been used to induce labor and accelerate the delivery of a baby
Questão 4
Questão
Endocrine glands may be made up of
Questão 5
Questão
The many hormones secreted by endocrine tissues are structurally classified as
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steroid or nonsteroid hormones
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anabolic or catabolic hormones
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sex or nonsex hormones
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tropic or hypotropic hormones
Questão 6
Questão
Which of the following is a function of glucagon?
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Promotes the entry of glucose into tissue cells
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Tends to decrease blood glucose concentrations
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Tends to increase blood glucose concentrations
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Converts glucose into glycogen
Questão 7
Questão
Principal thyroid hormone.
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T4
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T3 (triiodothyronine)
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thyroxine
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T4 and thyroxine
Questão 8
Questão
The production of thyroid hormone is stimulated by another hormone from the:
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anterior pituitary
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posterior pituitary
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thyroid gland.
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parathyroid gland
Questão 9
Questão
The common molecule from which all steroid hormones are derived is
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phospholipids
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cholesterol
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lecithin
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triglycerols
Questão 10
Questão
The first step in the renin-angiotensin mechanism is:
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angiotensin II circulates to the adrenal cortex, stimulating the secretion of aldosterone
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renin causes angiotensinogen to be converted to angiotensin I
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the juxtaglomerular apparatus secretes renin into the blood in response to a fall in the blood pressure within the kidney
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aldosterone causes increased reabsorption of sodium, which causes increased water retention
Questão 11
Questão
Which of the following glands is not regulated by the pituitary:
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Thyroid
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Ovaries
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Adrenals
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Thymus
Questão 12
Questão
In comparison with the nervous system, the regulatory effects of the endocrine system are [blank_start]slow[blank_end] to appear, but [blank_start]long[blank_end] lasting
Questão 13
Questão
The vascular link between the hypothalamus and adenohypophysis is called the:
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hypophyseal portal system
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hepatic portal system
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releasing hormone portal system
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both hypophyseal portal system and releasing hormone portal system
Questão 14
Questão
The substance that acts as a second messenger at the cellular level is:
Questão 15
Questão
Which of the following hormones is not secreted by the adrenal medulla:
Questão 16
Questão
[blank_start]Tropic[blank_end] [blank_start]hormones[blank_end] target other endocrine glands and stimulate their growth and secretion
Questão 17
Questão
When a small amount of one hormone allows a second hormone to have its full effect, the phenomenon is called:
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synergism
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permissiveness
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antagonism
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combination
Questão 18
Questão
[blank_start]Calcitonin[blank_end] has the opposite effect of parathyroid hormone
Questão 19
Questão
[blank_start]Prolactin[blank_end] affects milk secretion
Questão 20
Questão
[blank_start]PGE[blank_end] is a Prostaglandin that plays a role in the development of a fever:
Questão 21
Questão
[blank_start]Oxytocin[blank_end] is the hormone that causes ejection of milk into the mammary ducts.
Questão 22
Questão
Prolactin is not a tropic hormone?
Questão 23
Questão
Is Steroid a structural classification of hormones?