urinary system embryology

What cells migrate from the wall of the yolk sac into the indifferent gonad of the developing embryo during the 4th week of development?

• Germinal cells

• Primordial germ cells

• Primary oocytes

• Leydig cells

The sequential development of the renal structures within intermediate mesoderm can best be described as:

• pronephros, mesonephros, metanephros

• mesonephric duct, paramesonephric duct, metanephros

• mesonephric duct, metanephros, mesonephros

• pronephros, metanephros, mesonephros

Which from the following is correct in urinary system embryology?

• The urogenital system develops from the intermediate mesoderm which extends along the dorsal body wall of the embryo

• Pronephroi is transitory, nonfunctional structures appear in the 4th week

• Mesonephroi consists of glomeruli and mesonephric tubules. These tubules open into the mesonephric ducts

• All are the right

Which of the following is/are right for pronephroi?

• Pronephroi is transitory, nonfunctional structures appear in the 4th week

• Pronephroi is permanent kidney

• pronephroi consists of glomeruli and pronephric tubules

• pronephroi comes from extraembryonic mesoderm

Which from the following is correct in urogenital system embryology

• The urogenital system develops from the paraxial mesoderm

• Pronephroi is transitory, nonfunctional structures appear in the 6th week

• Mesonephroi is endodermal in origin

• metanephroi is last set of kidnays

what is/are the main source for permanent kidneys?

• The ureteric but and pronephroi

• The metanephrogenic blastema and mesonephroi

• The ureteric but and metanephrogenic blastema

• the pronephroi and axial mesoderm

what is the precursor for ureter?

• stalk of ureteric bud

• stalk of metanephrogenic blastema

• mesonephric glomerulus

• urogenital ridge

which sentence is/are right

• A nephron derived from the metanephrogenic blastema

• A collecting tubule derived from the ureteric but

• metanephroi begin to develop in the fifth week

• All are the right

when the upper limit of glomeruli is reached?

• until 10th week

• until 32nd week

• until 30 th week

• until full term

When the lobulation of the fetal kidney disappears?

• at the end of the first year of infancy

• at the end of organogenesis

• at the end of fetal life

• at the end of 36 week