Human Reproduction and Gametes
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Questions and Answers

What is the total number of chromosomes present in a sperm cell and an oocyte?

  • 46
  • 23
  • 23 and 23 (correct)
  • 92

    • What is the main function of the dartos and cremaster muscles?

  • To regulate the temperature of the testes (correct)
  • To separate the lobules in the testes
  • To release sperm from the seminiferous tubules
  • To produce sperm

    • What is the name of the layer that covers the testes and separates each one into lobules?

  • Scrotum
  • Tunica albuginea (correct)
  • Seminiferous tubules
  • Tunica vasculosa

    • What is the function of the Sertoli cells in the seminiferous tubules?

    <p>To control sperm production and create a blood-testes barrier</p> Signup and view all the answers

    How many lobules does each testis have?

    <p>300-400</p> Signup and view all the answers

    What is the total number of cell types present in the seminiferous tubules?

    <p>6</p> Signup and view all the answers

    What is the purpose of the microorganisms present in the vagina?

    <p>To protect from pathogens</p> Signup and view all the answers

    What is the average duration of an ovarian cycle?

    <p>28 days</p> Signup and view all the answers

    What is the process by which a haploid ovum is formed?

    <p>Meiosis</p> Signup and view all the answers

    What is the function of the tunica albuginea?

    <p>To cover the ovaries</p> Signup and view all the answers

    What is the term for the death of multiple follicles?

    <p>Atresia</p> Signup and view all the answers

    What triggers the LH surge?

    <p>High levels of estrogen</p> Signup and view all the answers

    What is the function of the uterine tubes?

    <p>To facilitate the travel of the oocyte to the uterus</p> Signup and view all the answers

    What is the purpose of the corpus luteum?

    <p>To produce progesterone</p> Signup and view all the answers

    What is the term for the lining of the uterus that is shed during the menses phase?

    <p>Functional layer</p> Signup and view all the answers

    What is the purpose of the proliferative phase of the menstrual cycle?

    <p>To regenerate the endometrium</p> Signup and view all the answers

    What is the term for one or both testes failing to descend into the scrotum prior to birth?

    <p>Cryptorchidism</p> Signup and view all the answers

    What is the primary function of the mitochondria in the midpiece of the sperm cell?

    <p>To generate ATP for flagellar movement</p> Signup and view all the answers

    What is the approximate number of days it takes for a sperm cell to develop and mature in the epididymis?

    <p>12 days</p> Signup and view all the answers

    What is the percentage of semen that is composed of sperm?

    <p>5%</p> Signup and view all the answers

    What is the hormone responsible for regulating testosterone production in the male reproductive system?

    <p>Gonadotropin-releasing hormone</p> Signup and view all the answers

    What is the term for the fluid released by the bulbourethral glands to lubricate and clean the urethra during sexual arousal?

    <p>Pre-ejaculate</p> Signup and view all the answers

    What is the process by which the sperm cell divides to form four haploid cells?

    <p>Meiosis</p> Signup and view all the answers

    What is the structure that covers the vaginal canal and allows fluid to flow out?

    <p>Hymen</p> Signup and view all the answers

    What is the term for the surgical removal of the foreskin?

    <p>Circumcision</p> Signup and view all the answers

    What is the primary function of the lysosomal enzymes in the head of the sperm cell?

    <p>To break down the acrosome</p> Signup and view all the answers

    What happens to the endometrium if there is no pregnancy within 10-12 days?

    <p>It is shed</p> Signup and view all the answers

    What is the primary function of the breasts in the reproductive system?

    <p>To produce milk or colostrum</p> Signup and view all the answers

    What is the role of the Y chromosome in the development of the male reproductive system?

    <p>It triggers a cascade of factors that differentiate the male reproductive system</p> Signup and view all the answers

    What is the effect of poor nutrition on puberty in females?

    <p>It leads to an earlier onset of puberty</p> Signup and view all the answers

    What is the role of the negative feedback loop in children regarding the hypothalamus and puberty?

    <p>It inhibits the production of hormones in the pituitary</p> Signup and view all the answers

    At what age does the growth spurt typically occur in males?

    <p>Around age 11-13</p> Signup and view all the answers

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