Block 7 Repro Kalli Questions Prt 3

17 Questions | Total Attempts: 303

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Block 7 Repro Kalli Questions Prt 3

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Questions and Answers
  • 1. 
    During the proliferation phase of the menstrual cycle, which hormone influences the endometrial lining of the uterus?
    • A. 

      Progesterone

    • B. 

      Luteinizing hormone (LH)

    • C. 

      Follicle stimulating hormone (FSH)

    • D. 

      Estrogen

    • E. 

      Relaxin

  • 2. 
    During the menstrual cycle
    • A. 

      The follicular cells of growing follicles secrete primarily progesterone

    • B. 

      Follicle stimulating hormone causes the corpus luteum to secrete estrogen

    • C. 

      Luteinizing hormone stimulates the corpus luteum to secrete primarily progesterone

    • D. 

      B. luteinizing hormone stimulates several primordial follicles to develop

    • E. 

      The pituitary gland secretes progesterone

  • 3. 
    The oocyte of a mature Graafian follicle is induced to complete the 1st meiotic division just prior to ovulation. Which of the following hormonal stimuli causes this?
    • A. 

      The low estrogen levels associated with the maturing follicles

    • B. 

      The surge of luteinizing hormone (LH) initiated by high estrogen levels

    • C. 

      The gradual elevation of follicle stimulating hormone (FSH)

    • D. 

      The cessation (lack) of progesterone secretion

    • E. 

      The slow elevation of progesterone produced by the corpus luteum

  • 4. 
    Which of the following descriptions BEST suit the primordial follicles?
    • A. 

      A primary oocyte surrounded by a single squamous layer of follicular cells

    • B. 

      An oogonia surrounded by a single cuboidal layer of follicular cells

    • C. 

      A primary oocyte surrounded by a multilayer of follicular (granulosa) cells

    • D. 

      A primary oocyte surrounded by the cumulus oophorus

    • E. 

      A secondary oocyte surrounded by a single squamous layer of follicular cells

  • 5. 
    Which of the following statements concerning gametogenesis is CORRECT?
    • A. 

      Primary spermatocytes are formed before birth

    • B. 

      The follicular cells of primordial follicles secrete oocyte maturation inhibitor (OMI) that stops the development of the primary oocyte

    • C. 

      Primary oocytes secrete the oocyte maturation inhibitor

    • D. 

      Before birth, the primary oocytes are all arrested in metaphase II

    • E. 

      Primary oocytes are all formed only at the time of puberty

  • 6. 
    Which of the following statements regarding the DNA content of cells is CORRECT?
    • A. 

      Spermatids have 2n DNA

    • B. 

      Secondary spermatocytes have 2n DNA

    • C. 

      Primary spermatocytes have 2n DNA and 46 pairs of chromosomes

    • D. 

      Spermatozoa have 23 pairs of chromosomes

    • E. 

      Spermatogonia have 2n DNA and 46 pairs of chromosomes

  • 7. 
    Which of the following statements concerning the fertilization process is CORRECT?
    • A. 

      The cortical granules release enzymes that alter the oocyte plasma membrane and the zone pellucida thus preventing polyspermy

    • B. 

      Acrosin and neuramiaidase are enzymes released by the cortical granules to alter the oocyte plasma membrane

    • C. 

      A zonal reaction occurs after fusion of the male pronucleus to the female pronucleus

    • D. 

      The uncapacitated sperm are able to fertilize the egg

  • 8. 
    Which of the following statements concerning meiosis is CORRECT?
    • A. 

      Separation of chromatids occurs during anaphase I of meiosis I

    • B. 

      Pairing of homologous chromosomes occurs in prophase I of meiosis I

    • C. 

      Non disjunction can only occur in meiosis II

    • D. 

      Crossing over of genetic material occurs in metaphase I of meiosis I

    • E. 

      Pairing of homologous chromosomes occurs in metaphase I of meiosis I

  • 9. 
    Which of the following statements concerning gametogenesis is CORRECT?
    • A. 

      Primary oocytes are arrested in the diplotene stage of prophase II before birth

    • B. 

      Primary follicles are all formed at the time of birth

    • C. 

      Primary spermatocytes are formed before birth

    • D. 

      Follicular cells of the primordial follicles secrete oocyte maturation inhibitor

    • E. 

      Ova are produced at the time of birth

  • 10. 
    During the process of fertilization:
    • A. 

      Acrosin and neuraminidase are released from the cortical granules. These enzymes digest the zona pellucida

    • B. 

      The tail of the sperm drops off as the sperm touches the zona pellucida

    • C. 

      Acrosin and neuraminidase are released from the acrosome. These enzymes digest the zona pellucida

    • D. 

      The cortical granules release enzymes that digest the corona radiata cells

  • 11. 
    Which of the following statements concerning the fertilization process is CORRECT?
    • A. 

      Uncapacitated sperms can penetrate the secondary oocyte

    • B. 

      Enzymes released from the cortical granules cause the oocyte plasma membrane and the zona pellucida to undergo a conformational change

    • C. 

      The zygote that is produced has 1n chromosome number

    • D. 

      Several sperms normally penetrate the secondary oocyte

    • E. 

      Sperms become capacitated in the epididymis

  • 12. 
    During the menstrual cycle
    • A. 

      Follicle stimulating hormone causes ovulation of the secondary oocyte

    • B. 

      A primary oocyte arrested at metaphase I of meiosis I is released at the time of ovulation

    • C. 

      Luteinizing hormone stimulates the granulosa and theca interna layers to form the corpus luteum

    • D. 

      Luteinizing hormone stimulates several primordial follicles to develop

    • E. 

      Follicle stimulating hormone stimulates the corpus luteum to secrete estrogen

  • 13. 
    Which of the following statements concerning the menstrual cycle is CORRECT?
    • A. 

      Human chorionic gonadotropin is secreted from the pituitary gland

    • B. 

      Progesterone secreted from the corpus luteum inhibits the secretion of luteinizing hormone

    • C. 

      Estrogen secreted from the corpus luteum. stimulates ovulation

    • D. 

      Progesterone secreted from the corpus luteum inhibits the secretion of Follicle stimulating hormone

    • E. 

      Human chorionic gonadotropin causes primordial follicles to develop

  • 14. 
    Which of the following descriptions BEST suit the multilaminar primary follicle?
    • A. 

      An oogonia surrounded by a single layer of columnar cells

    • B. 

      A primary oocyte surrounded by a single layer of cuboidal cells

    • C. 

      A primary oocyte surrounded by many layers of follicular or granulosa cells

    • D. 

      A primary oocyte surrounded by a flattened layer of follicular cells

    • E. 

      A primary oocyte surrounded by a corona radiata layer of cells

  • 15. 
    1. Which of the following statements concerning the mature graafian follicle is  CORRECT?  
    • A. 

      Follicle stimulating hormone stimulates the granulosa layer to convert androstenedione to estrogen

    • B. 

      Follicle stimulating hormone stimulates the theca interna layer to produce progesterone

    • C. 

      The theca externa layer produces estrogen

    • D. 

      The theca interna layer produces estrogen

    • E. 

      Progesterone stimulates ovulation of the secondary oocyte from the graafian follicle

  • 16. 
    In the absence of fertilization, the
    • A. 

      Corpus luteum degenerates and forms scar tissue called the corpus albicans

    • B. 

      Corpus luteum enlarges to become the corpus luteum of pregnancy

    • C. 

      Human chorionic gonadotropin maintains the viability of the corpus luteum

    • D. 

      Luteinizing hormone continues to stimulate the corpus luteum

    • E. 

      The corpus luteum last for only 2 days after ovulation

  • 17. 
    Which of the following statements concerning the growing (developing) follicles is CORRECT?
    • A. 

      Estrogens from the granulosa cells stimulates proliferation and regeneration of the endometrial lining

    • B. 

      Androstenedione stimulates the endometrial glands to secrete glycolipids

    • C. 

      Follicle stimulating hormone stimulates regeneration and proliferation of the endometrial lining

    • D. 

      The corpus luteum enhances development of the follicles

    • E. 

      Luteinizing hormone causes growing follicles to become atretic