Question 1

The degenerating remnant of a corpus luteum is called a(n):&#10;A) Atretic follicle&#10;B) Balbiani body&#10;C) Corpus albicans&#10;D) Fimbrium&#10;E) Restiform body

Accepted Answer

The degenerating remnant of a corpus luteum is called a corpus albicans. A is incorrect, as an atretic follicle is a follicle that has degenerated without ovulation. B is incorrect, as a Balbiani body is a structure found in the oocyte cytoplasm during oogenesis. D and E are incorrect, as they are not related to the corpus luteum.

Question 2

The main hormone secreted by a corpus luteum is:&#10;A) Human chorionic gonadotropin&#10;B) Luteinizing hormone&#10;C) Oxytocin&#10;D) Progesterone&#10;E) Prolactin

Accepted Answer

The main hormone secreted by a corpus luteum is progesterone. Progesterone plays a crucial role in preparing the uterus for implantation of a fertilized egg and maintaining pregnancy.

Question 3

A primordial ovarian follicle is characterized by the presence of a(n):&#10;A) Antrum&#10;B) Corpus luteum&#10;C) Maximally enlarged oocyte&#10;D) Simple squamous arrangement of granulosa cells&#10;E) Thick layer of theca cells

Accepted Answer

Primordial ovarian follicles are characterized by their simple squamous arrangement of granulosa cells surrounding the oocyte, distinguishing them from more mature stages of follicular development.

Question 4

In a specific region of the embryo,plasma membranes between cells degenerate,creating an extensive cytoplasm filled with multiple nuclei.This region is the:&#10;A) Amnion&#10;B) Cytotrophoblast&#10;C) Decidua basalis&#10;D) Extraembryonic mesenchyme&#10;E) Syncytiotrophoblast

Accepted Answer

The description matches the syncytiotrophoblast, which is a layer of cells in the placenta that fuse their plasma membranes, forming a multinucleated cytoplasmic mass. The other choices do not match the given description.

Question 5

During embryogenesis,primitive precursors to germ cells migrate from the yolk sac to take up residence in the:&#10;A) Cloaca&#10;B) Mesonephric duct&#10;C) Metanephros&#10;D) Oviducts&#10;E) Urogenital ridges of the mesonephros

Accepted Answer

During embryogenesis, primitive precursors to germ cells migrate from the yolk sac to take up residence in the urogenital ridges of the mesonephros, which are the sites of future gonad formation.

Question 6

The structure separating the surface of an oocyte from granulosa cells is called the:&#10;A) Antrum&#10;B) Corpus albicans&#10;C) Corpus luteum&#10;D) Glassy membrane&#10;E) Zona pellucida

Accepted Answer

The zona pellucida is a glycoprotein layer surrounding the plasma membrane of an oocyte. It plays a crucial role in fertilization, providing a barrier that sperm must penetrate to fertilize the egg. It separates the oocyte from the surrounding granulosa cells in the ovarian follicle.

Question 7

Which feature distinguishes a mature,graafian follicle from a primary follicle? The presence of a(n):&#10;A) Antrum&#10;B) Granulosa layer of cells&#10;C) Primary oocyte&#10;D) Theca layer of cells&#10;E) Zona pellucida

Accepted Answer

The presence of an antrum (a fluid-filled cavity) is a distinguishing feature of a mature, graafian follicle. Primary follicles do not have this structure. The presence of a granulosa layer of cells, primary oocyte, theca layer of cells, and zona pellucida are common features of both primary and mature follicles.

Question 8

The endometrium of the uterus is covered by an epithelium that is classified as:&#10;A) Pseudostratified ciliated columnar&#10;B) Simple columnar&#10;C) Simple cuboidal&#10;D) Simple squamous&#10;E) Stratified cuboidal

Accepted Answer

The epithelium that covers the endometrium of the uterus is a simple columnar epithelium. This type of epithelium is specialized for secretion and absorption, which are necessary functions of the endometrium during the menstrual cycle and pregnancy.

Deck 18: Female Reproductive System