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Human Reproduction Test - 42

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Human Reproduction Test - 42
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  • Question 1
    1 / -0
    Vasa-efferentia possess
    Solution
    The sperms produced in the seminiferous tubules are released by the vasa efferentia and opens into epididymis located along the posterior surface of each testis. 
    These possess the ciliated cells which stir the luminal fluids, which ensures homogeneous absorption of water from the fluid produced by the testis, which results in an increase in the concentration of luminal sperm.
    So, the correct answer is option C.
  • Question 2
    1 / -0
    Greater development of sperms in rabbit takes place in
    Solution
    In mammals, sperm cells leave the seminiferous tubules of each testis and pass into a larger coiled tube, the epididymis. There, sperm finish maturing and are stored. During ejaculation, sperms pass from each epididymis into a sperm duct, the vas deferens (plural vasa deferentia). 
    The vas deferens extends from the scrotum through the inguinal canal and into the pelvic cavity. Each vas deferens empties into a short ejaculatory duct, which passes through the prostate gland and then opens into the single urethra. The urethra, which at different times, conducts urine and semen, passes through the penis to the outside of the body. Thus, the sperms pass through the following structures:
    Seminiferous tubules--> epididymis--> vas deferens-->ejaculatory duct--> urethra--> release from body.
  • Question 3
    1 / -0
    Scrotal sacs of man and rabbit are connected with the abdominal cavity by
    Solution
    Human male inguinal canal, is a narrow connecting passage of the peritoneal cavity between the abdomen and the scrotal sac, contains the spermatic cord.  Scrotal sacs in rabbits are migratory. They descend into the scrotum during the breeding season but withdraw into the abdominal cavity during non-breeding periods through inguinal canals which remain open throughout life. 
    So, the correct answer is option 'Inguinal canal'.
  • Question 4
    1 / -0
    Scrotum communicates with abdominal cavity through
    Solution
    Testes are paired male reproductive organs (gonads), which produce sperm. During fetal life, tests are formed just below the kidneys inside the abdomino-pelvic cavity. By third fetal month it starts to descend and by the seventh month of fetal life it passes through the inguinal canal. The inguinal canal is a passageway leading to scrotum.
  • Question 5
    1 / -0
    Number of prostate glands in rabbit is
    Solution
    In mammals (like rabbit), the male accessory glands include paired seminal vesicles, a prostate and paired bulbourethral glands. Secretions of these glands constitute the seminal plasma, which is rich in fructose, calcium and certain enzymes. 
    So, the correct answer is option A.
  • Question 6
    1 / -0
    Sugar fructose is present in the secretion of
    Solution
    Seminal vesicles are paired; secretary sacs lying next to the ampulla of the ductus deference. It produces alkaline secretion, which contains mostly water, fructose, prostaglandin and vitamin C.
  • Question 7
    1 / -0
    Location and secretion of Leydig cells are
    Solution
    In each testis, the regions outside the seminiferous tubules, called as interstitial spaces, contain small blood vessels and interstitial cells or Leydig cells. Leydig cells synthesise and secrete testicular hormones, called as androgens. 
  • Question 8
    1 / -0
    Degenerative process of follicles or eggs in ovary is called as
    Solution
    Ovarian follicle atresia is the periodic process in which immature ovarian follicles degenerate and are subsequently re-absorbed during the follicular phase of the menstrual cycle. Generally, around 20 follicles mature each month and only a single follicle is ovulated. The rest undergo atresia. Thus, the correct answer is option B.
  • Question 9
    1 / -0
    In between spermatogonia................ are found.
    Solution
    Each lobule of testis, contains one to three highly coiled seminiferous tubules in which sperms are produced. Each seminiferous tubule is lined on its inside by two types of cells, called as male germ cells (spermatogonia) and sertoli cells. The male germ cells undergo meiotic divisions finally leading to sperm formation, while Sertoli cells provide nutrition to the germ cells. The regions outside the seminiferous tubules called as interstitial spaces, contain small blood vessels and interstitial cells or Leydig cells. Leydig cells synthesise and secrete testicular hormones, called as androgens. Other immunologically competent cells are also present.
  • Question 10
    1 / -0
    Seminal vesicle is present at the junction of 
    Solution
    Seminal vesicles are also known as uterus masculinus. These are narrow, two long pouches having muscular tissue on their wall. About 70% of the semen in seminal fluid is produced by seminal vesicles. These are situated just behind the urinary bladder at the junction of prostrate gland and vas-deferens.
    So, the correct answer is 'Prostrate and Vas-deferens'.
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