Histology 4D

A detailed and colorful diagram illustrating the stages of ovary and kidney development in human embryology, featuring labeled structures like oogonia, mesonephros, and metanephros in a scientific style.

Exploring Ovary Development and Kidney Formation

Test your knowledge on the intricate processes of ovary and kidney development with this comprehensive quiz. Dive deep into human embryology and learn about the stages and components involved in gonadal and renal system formation.

Multiple question types to enhance learning
Designed for students and enthusiasts of anatomy
Discover fascinating facts about human development

11 Questions3 MinutesCreated by LearningGermCell42

Ovary development:

Oogonia arise from the endoderm of the yolk sac

Occurs by the 10th week of gestation

Primordial germ cells differentiate into the oogonia

SRY protein is unnecessary for development

First the cell cluster with PGC occypy the medullary part of the ovary

The cell clusters with primitive germ cells occupy the medullary part of the ovary

The cell clusters surrounding one primitive germ cells to form the primordial ovarian follicles

Ovary development:

Cortical cords remains close to the surface

Occurs later than testis development

Primordial germ cells develop into graafian follicles

In the 7th week the second generation of cortical cords are formed

Ovary development starts at the 7th week of gestation

Oogonia arises from the endoderm of the yolk sac

Occurs earlies than the testis development

What is true?

Pronephron is a nonfunctional organ in humans

Leydig cells by the 8th week of gestation begins the production of testosterone

Mesonephros proper degenerates

Gonocytes are differentiated within the endodermal cells of the yolk sac wall

AMH or MIS is secretory products of leydig cells

In males the Müllerian duct differentiated into the epididymis, vas deferens etc.

Which statements are correct?

The definite kidney becomes functional near the 12th week

AMH or MIS is the secretory product of sertori cells

Primordial of kidney and gonads derive from the intermediate mesoderm

Wolffian leydig cells are formed by proliferation of mesodermal cells

In females the Müllerian duct degenerates due to the action of AMH and MIS

Mesonephros is the first organ in kidney system development

During the gonadal system development, both paramesonephric mullarian ducts and mesonephrin are present in both sexes:

Paramesonephric are newly produces ducts as invaginations of the mesodermal epithelium

In females the wolffian duct regress in the absence of testosterone

In females the Wolffian duct degenerates

The mullerian duct in femals differentiate into the oviduct, uterus and upper part of vagina

In males the mullarian duct degenerate due to the action of AMH

Wolffian ducts are formed during the metanephros development

In males the wolffian ducts differentiation is under maternal estrogen control

Paramesonephric ducts; müllerian ducts:

Are newly produced ducts as invaginations of the mesodermal epithelium

Are female specific

In males they degenerate due to AMH

In females it differentiates into the oviducts, uterus and upper part of the vagina

Are formed during pronephros development

Are male specific

Hormonal control of female sex differentiation:

The development of external genitalia is stimulated by placental estrogens

Estrogens are included in this process

The uterine tube development depends on maternal estrogens

The only source for hormones involved in sex organ differentiation is placental hormones

Only maternal hormones are involved in sex organ differentiation

What is true regarding mesonephroi?

Each mesonephros consists of a renal corpuscle and mesonephric tubules, which opens into the mesonephric duct

Each mesonephros proper degenerates, wolffian ducts are derivatives in males

Are derived from the mesoderm

Consists of approximately 40 glomeruli

They begin developing in the late 4th week

Are derived from the endoderm

Consists of approximately 400 glomeruli

Begins to develop in the 8th week

What is true regarding the pronephric system?

Pronephros are nonfunctiona

Arises from the intermediate mesoderm

Degenerates by the end of the 5th week

Pronephric ducts open into cloaca

Pronephros perform extremely important functions in adults

Primordal germ cells differentiate into oogonia

Oogonia arises from the endoderm of the yolk sac

Occured by 10th week of gestation

Starts at the 4th week of gestation

What is true regarding metanephros?

There are two sources for metanephros: ureteric bud and metanephric mesoderm

It is a primordium of the permanent ovary

It is a primordium of the permanent kidney

Begins development in the 5th week

Histology 4D

Exploring Ovary Development and Kidney Formation

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