Question 1

Which of the following is the correct sequence of events leading to the polyuria and dehydration associated with diabetes mellitus?

Accepted Answer

A)  Hyperglycemia  →\rarr→  glucose in urine raises osmolarity of tubular fluid  →\rarr→  glucose transport maximum exceeded  →\rarr→ glucose enters renal tubules  →\rarr→  osmotic diuresis
B)  Hyperglycemia  →\rarr→  glucose enters renal tubules  →\rarr→  glucose transport maximum exceeded  →\rarr→  glucose in urine raises osmolarity of tubular fluid  →\rarr→  osmotic diuresis
C)  Hyperglycemia  →\rarr→  glucose enters renal tubules  →\rarr→  glucose in urine raises osmolarity of tubular fluid  →\rarr→  osmotic dieresis  →\rarr→  glucose transport maximum exceeded
D)  Hyperglycemia  →\rarr→  glucose transport maximum exceeded  →\rarr→  glucose enters renal tubules  →\rarr→  glucose in urine raises osmolarity of tubular fluid  →\rarr→  osmotic diuresis
E)  Osmotic diuresis  →\rarr→  glucose enters renal tubules  →\rarr→  glucose transport maximum exceeded  →\rarr→  glucose in urine raises osmolarity of tubular fluid  →\rarr→ hyperglycemia F) A) and E)
G) A) and D)

Question 2

Which of the following makes it possible for even a small quantity of hormone to have a strong effect on its target cell?

Accepted Answer

A)  Negative feedback inhibition
B)  The antagonistic effect
C)  Up-regulation
D)  Enzyme amplification
E)  Down-regulationF) B) and D)
G) B) and E)

Question 3

Both the thymus and the pineal gland shrink after childhood.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not a role of prostaglandins?

Accepted Answer

A)  To induce labor contractions
B)  To stop fever and pain
C)  To constrict or dilate arterioles
D)  To act as vasodilators or vasoconstrictors
E)  To inhibit gastric secretionF) D) and E)
G) B) and C)

Question 5

Peptide hormones are synthesized by cytoplasmic ribosomes as active enzymes.

Accepted Answer

A) True 
 B)False

Question 6

Addison disease is a consequence of a tumor of the adrenal medulla.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is not a cause of Cushing syndrome?

Accepted Answer

A)  ACTH hypersecretion by the pituitary
B)  ACTH-secreting tumors
C)  Hyperactivity of the adrenal cortex
D)  Hyperactivity of the adrenal medulla
E)  Excess cortisol secretionF) A) and D)
G) A) and E)

Question 8

The absence of iodine in the diet leads to __________.

Accepted Answer

A)  hypoparathyroidism
B)  hypothyroidism
C)  hypocalcemia
D)  hypoglycemia
E)  hypoxemiaF) A) and E)
G) B) and D)

Question 9

Hormones serve as intracellular messengers.

Accepted Answer

A) True 
 B)False

Question 10

The __________ is not an endocrine gland but it has a role in endocrine function.

Accepted Answer

A)  kidney
B)  pancreas
C)  thyroid gland
D)  parathyroid gland
E)  adrenal glandF) B) and D)
G) C) and D)

Question 11

Which of the following hormones is not a tropin?

Accepted Answer

A)  TSH
B)  GRH
C)  ACTH
D)  PRL
E)  TRHF) D) and E)
G) A) and E)

Question 12

The hypophyseal portal system connects the _________ with the _________.

Accepted Answer

A)  anterior pituitary; hypothalamus
B)  posterior pituitary; hypothalamus
C)  anterior pituitary; posterior pituitary
D)  hypothalamus; thyroid
E)  pituitary glands; thyroidF) A) and C)
G) A) and D)

Question 13

Which of the following is not a hypothalamic hormone?

Accepted Answer

A)  Antidiuretic hormone (ADH) 
B)  Luteinizing hormone (LH) 
C)  Thyrotropin releasing hormone (TRH) 
D)  Somatostatin
E)  Prolactin-inhibiting hormone (PIH) F) B) and D)
G) C) and E)

Question 14

Regardless of the cause of stress,the body reacts in a fairly consistent way to different stressors.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following organs has both endocrine and exocrine functions?

Accepted Answer

A)  The adrenal gland
B)  The salivary glands
C)  The ovary
D)  The pineal gland
E)  The thymusF) A) and B)
G) A) and C)

Question 16

The zona fasciculata in the adrenal gland secretes ___________.

Accepted Answer

A)  glucagon
B)  epinephrine
C)  estradiol
D)  aldosterone
E)  cortisolF) A) and B)
G) C) and D)

Question 17

Diabetes insipidus is caused by __________.

Accepted Answer

A)  epinephrine hypersecretion
B)  cortisol hypersecretion
C)  aldosterone hypersecretion
D)  antidiuretic hormone (ADH)  hyposecretion
E)  antidiuretic hormone (ADH)  hypersecretionF) C) and E)
G) D) and E)

Question 18

Cholesterol is essential for the synthesis of steroid hormones.

Accepted Answer

A) True 
 B)False

Question 19

Hormones are normally secreted via ducts into the bloodstream.

Accepted Answer

A) True 
 B)False

Question 20

Circulating hormones are mostly taken up and degraded by the _________ and the __________.

Accepted Answer

A)  adrenal glands; intestines
B)  liver; kidneys
C)  blood; kidneys
D)  liver; spleen
E)  spleen; kidneysF) All of the above
G) None of the above

Exam 17: The Endocrine System

Which of the following hormones is not a tropin?

Correct AnswerverifiedShow Answer

Which of the following is not a cause of Cushing syndrome?

Correct AnswerverifiedShow Answer

Which of the following makes it possible for even a small quantity of hormone to have a strong effect on its target cell?

Correct AnswerverifiedShow Answer

Which of the following is not a hypothalamic hormone?

Correct AnswerverifiedShow Answer

The __________ is not an endocrine gland but it has a role in endocrine function.

Correct AnswerverifiedShow Answer

Hormones serve as intracellular messengers.

Correct AnswerverifiedShow Answer

Diabetes insipidus is caused by __________.

Correct AnswerverifiedShow Answer

Peptide hormones are synthesized by cytoplasmic ribosomes as active enzymes.

Correct AnswerverifiedShow Answer

Which of the following is the correct sequence of events leading to the polyuria and dehydration associated with diabetes mellitus?

Correct AnswerverifiedShow Answer

The zona fasciculata in the adrenal gland secretes ___________.

Correct AnswerverifiedShow Answer

Which of the following is not a role of prostaglandins?

Correct AnswerverifiedShow Answer

Which of the following organs has both endocrine and exocrine functions?

Correct AnswerverifiedShow Answer

Cholesterol is essential for the synthesis of steroid hormones.

Correct AnswerverifiedShow Answer

The hypophyseal portal system connects the _________ with the _________.

Correct AnswerverifiedShow Answer

Addison disease is a consequence of a tumor of the adrenal medulla.

Correct AnswerverifiedShow Answer

Both the thymus and the pineal gland shrink after childhood.

Correct AnswerverifiedShow Answer

Circulating hormones are mostly taken up and degraded by the _________ and the __________.

Correct AnswerverifiedShow Answer

Hormones are normally secreted via ducts into the bloodstream.

Correct AnswerverifiedShow Answer

Regardless of the cause of stress,the body reacts in a fairly consistent way to different stressors.

Correct AnswerverifiedShow Answer

The absence of iodine in the diet leads to __________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The hypophyseal portal system connects the _ with the _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Circulating hormones are mostly taken up and degraded by the _ and the __.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified