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Human Reproduction Test - 43

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Human Reproduction Test - 43
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  • Question 1
    1 / -0
    Seminal plasma has sperms and secretions of
    Solution
    The male accessory glands include paired seminal vesicles, a prostate and paired bulbourethral (Cowper's) glands. Secretions of all of these glands constitute the seminal plasma, which is rich in fructose, calcium and certain enzymes. The seminal plasma along with the sperms constitute the semen.
  • Question 2
    1 / -0
    If the epididymis is not present then what will happen?
    Solution
    Epididymis forms an integral part of a male reproductive system which receives the sperm from seminiferous tubule by rete testis and allows the passage of sperm to the vas deferens. If epididymis is cut or blocked, sperms cannot travel to vas deferens and will be incapable for fertilization.
    So, the correct answer is option D.
  • Question 3
    1 / -0
    Spermatozoa are nourished during their development by
    Solution
    Each testicular lobule 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 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
    So, the correct answer is 'Sertoli cells'
  • Question 4
    1 / -0
    During differentiation the spermatids remain associated with
    Solution
    The sperms are stored in human male in testis within a highly coiled tubular structure known as seminiferous tubule. 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 which finally forms the sperm, while Sertoli cells provide nutrition to the germ cells. 
    So, the correct answer is option D.
  • Question 5
    1 / -0
    Cells of Leydig occur in
    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
    So, the correct answer is 'Testis'
  • Question 6
    1 / -0
    The endocrinal structure formed after ovulation (release of ovum from Graafian follicle) is
    Solution
    Ovulation is triggered by a surge of luteinizing hormone (LH) from the anterior pituitary. After ovulation, the follicle lining cells develop into the corpus luteum (yellow body), under the influence of LH from the anterior pituitary. The corpus luteum produces the hormone progesterone and some estrogen. If the ovum is fertilised, it embeds itself in the wall of the uterus, where it grows and develops and produces the hormone human chorionic gonadotrophin (hCG), which stimulates the corpus luteum to continue secreting progesterone and oestrogen for the first 3 months of the pregnancy, after which time this function is continued by the placenta. If the ovum is not fertilized the corpus luteum degenerates and a new cycle begins with menstruation. 
    At the site of the degenerate corpus luteum an inactive mass of fibrous tissue forms called as the corpus Albicans.
    Corpus callosum is found in the central nervous system.     The cerebrum is the largest part of the brain and it occupies the anterior and middle cranial fossae. It is divided by a deep cleft, the longitudinal cerebral fissure, into right and left cerebral hemispheres, each containing one of the lateral ventricles. Deep within the brain, the hemispheres are connected by a mass of white matter (nerve fibers), called as the corpus callosum. 
    Corpus striatum is a striped mass of white and grey matter situated in front of the thalamus in each cerebral hemisphere.
    Therefore, the correct answer is option C.
  • Question 7
    1 / -0
    Which one of the following is fibrous layer of follicle?
    Solution
    At puberty, only 60,000-80,000 primary follicles are left in each ovary. The primary follicles get surrounded by more layers of granulosa cells and a new theca and are called secondary follicles. 
    The secondary follicle soon transforms into a tertiary follicle, which is characterised by a fluid filled cavity, called as antrum. The theca layer is fibrous and is organised into an inner theca interna and an outer theca externa. At this stage, the primary oocyte within the tertiary follicle grows in size and completes its first meiotic division. It is an unequal division resulting in the formation of a large haploid secondary oocyte and a tiny first polar body. Thus the answer is option A.
  • Question 8
    1 / -0
    If cowper's gland is removed, which of the following will be affected?
    Solution
    There are three accessory glands in the male reproductive system, they are prostate gland a pair of seminal vesicles and cowper's gland. The cowper's gland carries the fluid that neutralizes acids from urine in the urethra. They also secrete mucus that lubricates the end of the penis and lining of the urethra. This will also reduce the damaged sperm count during ejaculation.  Thus, if cowper's glands are removed lubrication will be affected.
    So, the correct answer is option B.
  • Question 9
    1 / -0
    Antrum is filled with fluid and is found in
    Solution
    During oogenesis, each primary oocyte gets surrounded by a layer of granulosa cells and then called as the primary follicle. The primary follicles get surrounded by more layers of granulosa cells and a new theca and called as secondary follicles. The secondary follicle soon transforms into a mature tertiary follicle or Graafian follicle, which is characterized by a fluid-filled cavity, called as antrum. 
    So, the correct answer is 'Graafian follicle of ovary'
  • Question 10
    1 / -0
    Which of the following statement defines atretic follicle?
    Solution
    An atretic follicle is the follicle, that degenerates before coming to maturity; many atretic follicles occur in the ovary before puberty; in the sexually mature woman, several are formed each month. A fully developed mature follicle is called as Graafian follicle.
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