6 Stages of Follicle Growth in Reproduction

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During which stage of follicle growth does the primary oocyte grow in size?

Primordial follicle

Primary follicle (correct)

Graafian follicle

Secondary follicle

Which cell type is responsible for secreting estrogen and forming the antrum in the follicle growth stages?

Theca cells

Primordial cells

Corpus luteum cells

Granulosa cells (correct)

What event triggers ovulation in the menstrual cycle?

Oestradiol production

Progesterone secretion

Fluctuation in FSH levels

LH surge (correct)

Which phase of the ovarian cycle involves changes in the ovary leading up to ovulation?

Follicular phase Signup and view all the answers

Which hormone is primarily responsible for converting androgens into estrogen in the two-cell theory of estrogen production?

Follicle-Stimulating Hormone (FSH) Signup and view all the answers

What is the normal duration range of a typical menstrual cycle?

21-35 days Signup and view all the answers

What is responsible for the increase in oestrogen levels during the follicular phase of the ovarian cycle?

Antral follicles Signup and view all the answers

When does ovulation typically occur in a 28-day ovarian cycle?

Day 14 Signup and view all the answers

What hormone is mainly responsible for the thickening of the endometrium during the proliferative phase of the uterine cycle?

Oestrogen Signup and view all the answers

What happens to the corpus luteum if fertilization does not occur?

It degenerates due to low levels of FSH and LH Signup and view all the answers

What is the main role of the positive feedback mechanism that leads to an LH surge during the ovarian cycle?

Trigger ovulation Signup and view all the answers

Which phase of the uterine cycle is characterized by the degeneration of the endometrium?

Menstrual phase Signup and view all the answers

What is the correct sequence of events during oogenesis?

Oogonia undergo mitosis, primary oocytes are formed, secondary oocyte is ovulated Signup and view all the answers

At what stage in a female's life do the ovaries become inactive and experience follicular atresia?

Puberty Signup and view all the answers

What is the role of sex hormones in the cyclical maturation of primary oocytes?

Inducing the first meiotic division Signup and view all the answers

What is the fate of a secondary oocyte if fertilization does not occur?

Undergoes apoptosis Signup and view all the answers

What happens to the secondary oocyte after fertilization?

Completes meiosis II to form an ovum and a second polar body Signup and view all the answers

During which stage of life does a female have a defined number of primary oocytes at birth?

Birth Signup and view all the answers