A&P Lab 2: Respiratory

Baby girls are born with ______ oocytes than are present at puberty.

more.

The developing female gametes, as they progress through meiosis I, are called ______.

primary oocytes

What do oogonia develop into?

primary oocytes.

The correct sequence of the ovarian cycle is: primordial follicle___________, follicle, preantral follicle, mature_____________ follicle, and ovulation.

primary; antral

Meiosis goal:

variation. 4 N cells (haploid)

Place in the correct order the sequence of events and the products of the ovarian cycle, with the earliest event/product at the top. Position 1 of 6 primary follicle incorrect toggle button unavailable primary follicle:

1. primordial follicle 2. primary follicle 3. preantral follicle 4. mature antral follicle 5. ovulation 6. corpus luteum

What do you get at the end of meiosis 1?

1n or n

A primary oocyte is stimulated to continue meiosis. The resultant cell has ______ chromosomes.

23

It takes almost ______ days for the development of a mature antral follicle. A mature antral follicle is ready every ______ days.

300; 28

What is a primary oocyte?

A developing female gamete undergoing meiosis.

Which hormone stimulates the sustentacular cells of the seminiferous tubules to proliferate, grow, mature, and respond to the effects of the males sex hormone testosterone?

FSH

During spermiogenesis, a spermatid undergoes which of the following changes?

Growth of a flagellum. Formation of an acrosome.

What are the effects of androgens in females?

Increased hair growth in the pubic and axillary regions.

Which is true regarding the time line of follicular development?

It is an ongoing process, with one mature follicle ready for ovulation every 28 days.

After ovulation, what happens to a secondary oocyte?

It is swept into the uterine tube.

After polar body formation, the oocyte has which two of the following characteristics?

a haploid number of chromosomes. a large amount of cytoplasm.

An outcome of polar body formation is an oocyte with ______.

a large amount of cytoplasm.

The area of connective tissue that remains in the ovary after degeneration of the corpus luteum is called the corpus:

albicans

After ovulation, the remnants of the follicle that released the oocyte form a temporary glandular structure in the ovary called a ______ that secretes estrogen and progesterone.

corpus luteum.

The number of oocytes in the ovary steadily ______ from birth to menopause.

decrease.

Mitosis goal:

exact copy of cell. (2 Diploid cells)

In the presence of the hormones ______ and testosterone, sustentacular cells stimulate the spermatogenic cells to undergo spermatogenesis, giving rise to sperm cells.

follicle stimulating hormone (FSH).

Beginning at puberty, primary oocytes continue meiosis. The resulting cells are secondary oocytes in which the original chromosome number is ______.

halved.

Normally, where does fertilization occur?

in the uterine tube.

What happens to a secondary oocyte if it is not fertilized within hours?

it degenerates.

The hormone called ______ stimulates development of the interstitial cells of the testes, which secrete androgens, mainly testosterone.

luteinizing hormone (LH).

The female reproductive system produces and maintains the female sex cells, called:

oocytes.

Which cell type gives rise to primary oocytes?

oogonia.

Which term refers to ovarian stem cells that give rise to oocytes?

oogonia.

The hormone ______ primarily targets the uterus, preparing and maintaining the uterus during pregnancy.

progesterone

Differentiation of a spermatid into a single, mature sperm cell is called ______.

spermiogenesis.

Where does a corpus luteum form?

within the follicle that ovulated an oocyte.