NCLEX-PN : NCLEX
Study concepts, example questions & explanations for NCLEX-PN
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Example Questions
Example Question #6 : Reproductive Physiology
Which of the following is a function of follicle stimulating hormone (FSH) in an adult male?
All of these
It stimulates the Sertoli cells of the testes to produce androgen-binding protein
It triggers the initiation of spermatogenesis
It stimulates primary spermatocytes to undergo meiosis
All of these
In a healthy adult male, follicle stimulating hormone stimulates the Sertoli cells of the testes to produce androgen-binding protein, it stimulates primary spermatocytes to undergo meiosis, and triggers the initiation of spermatogenesis.
Example Question #7 : Reproductive Physiology
Which of the following is not a function of luteinizing hormone (LH) in a menstruating female?
It stimulates the production of estrogen by the ovary
It triggers the development of the corpus luteum
It stimulates the maturation of follicles within the ovary
It triggers the release of the mature egg during ovulation
It stimulates the maturation of follicles within the ovary
Luteinizing hormone stimulates the production of estrogen by the ovary, triggers the release of the mature egg during ovulation, and then stimulates the ruptured follicle to develop into the corpus luteum, the structure responsible for providing progesterone to the endometrium in preparation for implantation, if a pregnancy were to occur.
Example Question #8 : Reproductive Physiology
Which of the following is a normal value for luteinizing hormone (LH) in an adult female experiencing normal menstrual cycles?
All of these
All of these
In a menstruating female, LH values can vary widely during the menstrual cycle. It is its highest at the peak of the menstrual cycle 
Example Question #11 : Reproductive Physiology
Which of the following is a normal value for luteinizing hormone (LH) in an adult male?
Normal LH values for an adult male range from 
Example Question #12 : Reproductive Physiology
What is the function of luteinizing hormone (LH) in an adult male?
It triggers the production of testosterone by the Sertoli cells of the testes
It triggers sperm production in the seminiferous tubules
It triggers the production of testosterone by the Leydig cells in the testes
It triggers the conversion of testosterone into dihydrotestosterone
It triggers the production of testosterone by the Leydig cells in the testes
In an adult male, luteinizing hormone triggers the production of testosterone by the Leydig (interstitial) cells in the testes. Testosterone is converted to DHT (dihydrotestosterone) by the enzyme 5-alpha reductase. Sperm production and maturation is triggered by follicle-stimulating hormone (FSH) rather than LH in adult males.
Example Question #13 : Reproductive Physiology
Which of the following is the most biologically active form of estrogen?
Progesterone
Estriol
Estrone
Estradiol
Estradiol
The most prevalent and biologically active estrogen in an adult female is estradiol (E2). Estrone and estriol are less active forms of estrogen, and progesterone is not a form of estrogen, but rather a distinct progestogen reproductive hormone.
Example Question #62 : Other General Biology
What is the most prevalent form of circulating estrogen in a post-menopausal female?
Estradiol
Estrone
Estetrol
Estriol
Estrone
After menopause, the most predominant form of circulating estrogen is estrone (E1). Estradiol is more prevalent in pre-menopausal women who are not pregnant, while estriol and estetrol are both only elevated during pregnancy.
Example Question #63 : Other General Biology
What form of estrogen is only present in pregnant females?
Estriol (E3)
Estradiol (E2)
Estetrol (E4)
Estrone (E1)
Estetrol (E4)
The only form of estrogen that is exclusively present in pregnant women is estetrol (E4).
Example Question #14 : Reproductive Physiology
What enzyme is responsible for the conversion of androgens into estrogen?
Aromatase
Protease
5-alpha-reductase
Amylase
Aromatase
The conversion of androgens into estrogen is performed by aromatase, also known as estrogen synthetase or estrogen synthase. 5-alpha-reductase is responsible for the conversion of testosterone to dihydrotestosterone. Amylase is a salivary enzyme that breaks down starches during mastication, and protease is a digestive enzyme that aids in the breakdown of proteins.
Example Question #15 : Reproductive Physiology
Which cells in the male reproductive tract produce testosterone?
Sertoli cells
Leydig cells
Spermatogenic cells
Wolffian cells
Leydig cells
Leydig cells, located in the testes adjacent to the seminiferous tubules, secrete testosterone in response to lutenizing hormone (LH). Sertoli cells are also adjacent to the seminiferous tubules. They play a role in stimulating spermatogenesis in spermatogenic cells. Wolffian cells are a part of the fetal male reproductive tract and do not produce testosterone.
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