Urogenital development
Urogenital Development Quiz
Test your knowledge on urogenital development with this comprehensive quiz! This quiz covers various aspects of kidney and gonad development, including mesonephric, metanephric structures, and hormonal influences.
Whether you're a student, educator, or simply curious about human development, this quiz offers a challenging and educational experience.
- Explore crucial developmental stages
- Understand the roles of various cell types
- Learn about differentiation processes
Mesonephroi, find true:
- Are derived from endoderm
- Are derived from intermediate neuroectoderm
- Are derived from mesoderm
- Each mesonephros consists of renal corpuscles and mesonephric tubules, which open into mesonephric duct
- Each mesonephros proper degenerates, mesonephric ducts (wolffian ducts) are derivates in males
- Lie caudal to pronephroi
- They begin to develop in 8th week
- They begin to develop late in 16th week
- They consist of approximately 40 glomeruli
- They begin to develop late in 4th week
- They consist of approximately 400 glomeruli
During the gonadal system development, both paramesonephric Müllerian ducts and mesonephric are present in both sexes:
- In females Wolffian ducts degenerate
- In females Wolffian ducts regress in the absence of testosterone
- In the females the Müllerian ducts differentiate into the oviduct, uterus and upper part of the vagina
- In males the Müllerian ducts degenerate due to action of AMH
- In males Wolffian ducts differentiation is under maternal estrogens control
- Paramesonephric (Müllerian ducts) are newly produced ducts as invagination of mesodermal epithelium
- Wolffian ducts are formed during the metanephros development
Find true regarding metanephros:
- Begins development in the fifth week
- Begins development in the 25th week
- C cells produce calcitonin
- C cells produce parathormone
- It is a primordium of permanent kidney
- It is a primordium of permanent ovary
- It is a primordium of permanent testis
- There are 2 sources for metanephros: ureteric bud and metanephric mesoderm
Kidney is of:
- Ectodermal origin
- Endodermal origin
- Mesenchymal origin
- Mesodermal origin
- Mixed ectodermal and endodermal origin
- Neuroectodermal origin
Paramesonephric (Müllerian) ducts give rise to:
- Efferent ductules
- Female external genitalia
- Ovaries
- Oviducts
- Upper part of vagina
- Uterus
Paramesonephric (Müllerian ducts):
- Are female specific
- Are formed during the pronephros development
- Are male specific
- Are newly produced ducts as invagination of endodermal epithelium
- Are newly produced ducts as invagination of mesodermal epithelium
- In females, differentiate into the oviducts, uterus and upper part of vagina
- In males, differentiate into the oviducts, uterus and upper part of the vagina
- In males, the ducts degenerate due to the action of Antimüllerian hormone (AMH)
Genital system development:
- Both mesonephric Wolffian ducts and paramesonephric Müllerian ducts are present in both sexes
- Female zygote contains XX set of sex chromosome
- Female zygote contains XY set of sex chromosome
- Gonadal development is performed in the absence of primordial germ cells
- Gonadal Development is limited in the absence of primordial germ cells (gonocytes)
- Gonad development includes indifferent stage and stage of differentiation
- Under SRY protein influence female gonad development occurs
- Male gonad is differentiated under placental and maternal estrogens
- Paramesonephric Müllerian ducts are specific for male
- In females, gonadal development is unlimited regarding the number of primordial germ cells (gonocytes)
Genital system development:
- In females the Müllerian duct will differentiate into the oviducts, uterus and upper part of the vagina
- Includes indifferent stage and stage of differentiation
- Male zygote contains XY set of chromosome.
- In females, gonadal development is unlimited regarding the number of primordial germ cells (gonocytes)
- Gonadal development does not include indifferent stage and stage of differentiation
- Mesonephric Wolffian ducts are specific for male
- Morphological differences are not observed in indifferent gonad in the both sexes
- Paramesonephric Müllerian ducts are specific for female
- SRY protein influences on Male gonad development
- The key to sexual dimorphism is the gene on short arm of Y chromosome
- The key to sexual dimorphism is the gene on short arm of X chromosome
Male gonad development, find true:
- Begins at 7th week of prenatal life
- Begins at 17th week of prenatal life
- Primitive germ cells are derived from ectoderm of amnion
- Primitive germ cells are derived from yolk sac
- Toward the hilum, cells of the cords form tiny tubules – rete testis
- The tunica albuginea separates the testis cords from the surface epithelium
- Is influenced by SRY protein, product of gene on short arm of Y chromosome
- Sertoli cells are derived from mesoderm
- Sertoli cells are derived from endoderm of yolk sac
- Is developed only in the absence of SRY protein
Leydig cells, find true:
- Are derived from mesenchyme of the genital ridge
- Are derived from mesoderm
- By the eighth week of gestation they begin production of testosterone
- Lie in the medulla of the testis cords
- Lie between testis cords
- They release testosterone under the stimulation of human chorionic gonadotropin (hCG)
- Are haploid cells
- Located in interstitial tissue of testis
- In the 5th week they begin to produce testosterone
Hormonal control of female sex differentiation – find true:
- Estrogens are included in this process
- Estrogens are unnecessary for this process
- The only source for hormones involved in sex organs differentiation is placenta
- Uterine tube development depends on maternal estrogens
- The development of ext. Genitalia is stimulated by placental estrogens
- Only maternal hormones are involved in sex organs differentiation
Ovary development, find true:
- Firstly, the cell clusters with primitive germ cells occupy the medullary part of ovary.
- Occurs by 10th week of gestation
- Occurs earlier than testis development
- Occurs later than the testis development
- Oogonia arise from endoderm of yolk sac wall.
- Primordial germ cells differentiate into the oogonia
- Starts at 7th week of gestation
- The cell clusters with primitive germ cells occupy the medullary part of ovary
- The cell clusters surround one primitive germ cells to form primordial ovarian follicle
- Cortical cords remain close to the surface
- Primordial germ cells develop into Graafian follicles
Permanent kidneys arise from:
- Both: meso- and pronephroi
- Both: meta- and pronephroi
- Mesonephroi
- Metanephroi
Find true:
- Antimüllerian hormone (AMH) or Müllerian inhibiting substance (MIS) is secretory product of Sertoli cells.
- In females the Müllerian duct degenerates due the action of AMH
- Leydig cells are formed by proliferation of mesodermal cells
- Pronephros is nonfunctional organ in human.
- Leydig cells by the 8th week of gestation begin production of testosterone
- Mesonephros proper degenerates
- The definite kidney becomes functional near the 12th week
- AMH or MIS is secretory product of sertoli cells
- Primordial of kidney and gonads derive from intermediate mesoderm
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