Oogenesis and Ovarian Cycle

A detailed illustration of the human female reproductive system highlighting oogenesis and the ovarian cycle, with clear labels on the ovarian follicles, hormones, and developmental stages.

Oogenesis and Ovarian Cycle Quiz

Test your knowledge of oogenesis and the ovarian cycle with this comprehensive quiz. Delve into the intricacies of female reproductive biology and see how well you understand the various stages and functions involved.

Whether you're a student of biology, a teacher, or just someone interested in the subject, this quiz is a great way to assess your understanding. Topics covered include:

Meiosis and follicular development
Hormonal regulation
Follicular atresia
Ovulation and corpus luteum

21 Questions5 MinutesCreated by AnalyzingOocyte52

Name:

In human females, which meiotic phase has the longest duration?

Anaphase-1

Prophase-2

Prophase-1

Metaphase-2

What is not seen in primary follicle?

Granulosa cells are cuboidal in nature

A glycoprotein layer 'Zona pellucida' appears between primary oocyte and granulose cells

Granulose cells express FSH receptors

Granulose cells nourish the oocyte by way of cytoplasmic extensions

How many ova are produced from a single oogonium?

400

Primordial germ cells in a female are derived from:

Ovarian cortex

Germinal epithelium of ovary

Yolk sac

None of the above

Which is a function of ovary?

Oogenesis

Ovulation

Secretion of female sex hormones

All of the above

OMIF (Oocyte Maturation Inhibiting Factor) begins to be released by:

Granulosa cells

Theca cells

Cumulus cells

Pregranulosa cells

What is not true about granulosa cells?

Secrete oestrogen

Have high aromatase activity

Secrete androgens

Secrete inhibin

What is must for the growth of follicle till primary follicle stage?

GnRH

FSH

Local factors from oocyte

Oestrogen

All are the features of secondary follicle except:

Granulosa cells multiply forming several layers

Small pockets of fluid develop between the granulosa cells

Granulosa cells express FSH receptors under the influence of activins

Theca layer gets differentiated into theca interna and externa

Which of the following statements is INCORRECT?

Granulosa cells are avascular in the follicular phase

Theca cells are avascular in the follicular phase

Theca cells are vascular in the follicular phase

Granulosa cells are vascular in the luteal phase

Main cause of atresia of follicles other than the dominant follicle in the late follicular phase is:

Decreased levels of FSH due to negative feedback to anterior pituitary

Increased levels of FSH due to positive feedback to anterior pituitary

Decreased levels of inhibin

Decreased levels of oestrogen

LH surge is seen because of:

Negative feedback due to increased amount of oestrogen

Positive feedback due to increased amount of oestrogen from tertiary follicles

Positive feedback due to increased levels of oestrogen from the dominant follicle

None of the above

Levels of oestrogen required to lead to positive feedback are:

200 ng /ml for 48 hours

200 pg/ml for 36 hours

200 mg/ml for 48 hours

400 pg/ml for 36 hours

What is required just before ovulation?

Tremendous rise in the levels of LH

Tremendous rise in the levels of FSH

Increased levels of oestrogen

Increased levels of inhibin

All are true about stigma in the ovary except:

A protrusion of ovarian wall seen throughout the ovarian cycle

A poorly vascularised area in the ovarian wall due to compression by the dominant follicle

A site for release of ovum

It requires progesterone for its degeneration in order to release the ovum

What is NOT true about luteal phase?

Refers to 15 to 28 days in a 28 day cycle

Progesterone is the dominant hormone

Granulosa and theca cells transform into lutein cells

Increased levels of FSH and LH are seen during the early luteal phase

Which of the following statements about corpus luteum is INCORRECT?

Basal levels of LH are required for its function

Secretes hormones- oestrogen, progesterone, and inhibin

Regression of corpus luteum starts with the onset of pregnancy

Forms around 7-8 days of ovulation

Which of the following is NOT TRUE about selection of dominant follicle?

Dominant follicle having maximum number of FSH receptors is selected

Number of FSH receptors per granulosa cell are more

Number of granulosa cells are more, thus, receptors are more

Maximum secretion of oestrogen by the dominant follicle

Involution of corpus luteum occurs due to:

Increased release of FSH and LH from anterior pituitary

Decreased release of progesterone from corpus luteum

Decrease levels of inhibin from the corpus luteum

Decreased release of FSH and LH from anterior pituitary

A student performs better if he/she-

Reads more thoroughly and regularly

Pays attention in the class

Does not try to cheat in Online tests

All of the above

Oogenesis and Ovarian Cycle

Oogenesis and Ovarian Cycle Quiz

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