MSF 3 Exam 2026 Questions and
Answers
Which of the following are released by the anterior pituitary?
A. Oxytocin
B. Vasopressin
C. Thyrotropin-releasing hormone
D. Growth hormone - Correct answer-D. Growth hormone
All steroid hormones are derived from _________________, so they have similar
four-ring structures.
A. Cholesterol
B. Tyrosine
C. Amino acid chains
D. Tryptophan - Correct answer-A. Cholesterol
Second messenger systems are required by __________.
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,A. Protein/peptide hormones because these hormones are hydrophobic
B. Protein/peptide hormones because these hormones are lipophobic
C. Thyroid amine hormones because they are lipophilic
D. Steroid hormones because they are non-polar - Correct answer-B.
Protein/peptide hormones because these hormones are lipophobic
___________ is the pancreatic hormone that stimulates the breakdown of glycogen
to increase blood glucose
levels.
A. Glucagon
B. Insulin
C. Cortisol
D. Epinephrine - Correct answer-A. Glucagon
Which hormone is lipophilic, non-polar, and must be transported in the blood
attached to carrier proteins?
A. Estradiol
B. Antidiuretic hormone
C. Thyroid-stimulating hormone
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,D. Prolactin - Correct answer-A. Estradiol
Which of the following statements describe the biosynthesis of protein/peptide
hormones?
A. DNA instructions copied to mRNA, ribosomes read mRNA and build the
protein, protein is modified for
final export in vesicles within the smooth endoplasmic reticulum
B. DNA instructions copied to mRNA, ribosomes read mRNA and build the
protein, protein is packaged in
vesicles along with proteolytic enzymes in the Golgi apparatus
C. Tryptophan serves as the parent amino acid and additional amino acids are
added in the rough
endoplasmic reticulum
D. Tyrosine serves as the parent amino acid and additional iodines are added by
enzymes - Correct answer-B. DNA instructions copied to mRNA, ribosomes read
mRNA and build the protein, protein is packaged in
vesicles along with proteolytic enzymes in the Golgi apparatus
Which of the following statements are true about desensitization?
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, A. Desensitization refers to the lack of hormone
B. Desensitization refers to the complete lack of a specific type of second-
messenger system
C. Desensitization can include decreased affinity of a receptor for a hormone
D. Desensitization can include increased hormone receptor availability in the cell
membrane - Correct answer-C. Desensitization can include decreased affinity of a
receptor for a hormone
Regarding endocrine pathologies, when there is hypersecretion in the final gland of
a pathway, it is termed
_____________ hypersecretion.
A. Primary
B. Secondary
C. Permissive
D. Inhibitory - Correct answer-A. Primary
Increased blood glucose levels would cause which of the following to occur?
A. Increased release of growth hormone
B. Increased release of dopamine
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Answers
Which of the following are released by the anterior pituitary?
A. Oxytocin
B. Vasopressin
C. Thyrotropin-releasing hormone
D. Growth hormone - Correct answer-D. Growth hormone
All steroid hormones are derived from _________________, so they have similar
four-ring structures.
A. Cholesterol
B. Tyrosine
C. Amino acid chains
D. Tryptophan - Correct answer-A. Cholesterol
Second messenger systems are required by __________.
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,A. Protein/peptide hormones because these hormones are hydrophobic
B. Protein/peptide hormones because these hormones are lipophobic
C. Thyroid amine hormones because they are lipophilic
D. Steroid hormones because they are non-polar - Correct answer-B.
Protein/peptide hormones because these hormones are lipophobic
___________ is the pancreatic hormone that stimulates the breakdown of glycogen
to increase blood glucose
levels.
A. Glucagon
B. Insulin
C. Cortisol
D. Epinephrine - Correct answer-A. Glucagon
Which hormone is lipophilic, non-polar, and must be transported in the blood
attached to carrier proteins?
A. Estradiol
B. Antidiuretic hormone
C. Thyroid-stimulating hormone
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,D. Prolactin - Correct answer-A. Estradiol
Which of the following statements describe the biosynthesis of protein/peptide
hormones?
A. DNA instructions copied to mRNA, ribosomes read mRNA and build the
protein, protein is modified for
final export in vesicles within the smooth endoplasmic reticulum
B. DNA instructions copied to mRNA, ribosomes read mRNA and build the
protein, protein is packaged in
vesicles along with proteolytic enzymes in the Golgi apparatus
C. Tryptophan serves as the parent amino acid and additional amino acids are
added in the rough
endoplasmic reticulum
D. Tyrosine serves as the parent amino acid and additional iodines are added by
enzymes - Correct answer-B. DNA instructions copied to mRNA, ribosomes read
mRNA and build the protein, protein is packaged in
vesicles along with proteolytic enzymes in the Golgi apparatus
Which of the following statements are true about desensitization?
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, A. Desensitization refers to the lack of hormone
B. Desensitization refers to the complete lack of a specific type of second-
messenger system
C. Desensitization can include decreased affinity of a receptor for a hormone
D. Desensitization can include increased hormone receptor availability in the cell
membrane - Correct answer-C. Desensitization can include decreased affinity of a
receptor for a hormone
Regarding endocrine pathologies, when there is hypersecretion in the final gland of
a pathway, it is termed
_____________ hypersecretion.
A. Primary
B. Secondary
C. Permissive
D. Inhibitory - Correct answer-A. Primary
Increased blood glucose levels would cause which of the following to occur?
A. Increased release of growth hormone
B. Increased release of dopamine
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