Female Reproductive System
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Questions and Answers

What is the primary reason why only a limited number of oocytes are released during a woman's reproductive lifetime?

  • The process of atresia only occurs during menstruation
  • The ovaries are only capable of producing a certain number of oocytes
  • Ovulation occurs too frequently, resulting in a limited number of oocytes
  • The majority of oocytes degenerate through atresia (correct)

What is the approximate number of oocytes released during a woman's reproductive lifetime?

  • 450 (correct)
  • 2000-2500
  • 1000-1500
  • 100-150

What is the primary component of the ovarian follicle?

  • The oocyte surrounded by a thick layer of muscle cells
  • The oocyte surrounded by one or more layers of epithelial cells (correct)
  • The oocyte surrounded by connective tissue
  • The oocyte surrounded by a single layer of nerve cells

During what stage of meiosis is the oocyte in the primordial follicle?

<p>First meiotic prophase (D)</p> Signup and view all the answers

What is the approximate diameter of the oocyte in the primordial follicle?

<p>20-25 μm (B)</p> Signup and view all the answers

What is the location of the primordial follicles in the ovary?

<p>Cortex (D)</p> Signup and view all the answers

What is the structure that surrounds the oocyte in the primordial follicle?

<p>A single layer of flattened follicular cells (B)</p> Signup and view all the answers

What is the primary function of the mesovarium?

<p>Connecting the ovary to the broad ligament (A)</p> Signup and view all the answers

What primarily influences the thickness and structure of the endometrium?

<p>Ovarian hormones (A)</p> Signup and view all the answers

What is the function of the secretory peg cells in the epithelium?

<p>To produce a nutritive fluid covering the epithelium (C)</p> Signup and view all the answers

During which phase of the ovarian cycle are the peg cells most developed and active?

<p>Immediately after ovulation (C)</p> Signup and view all the answers

What is the myometrium?

<p>The thickest layer of the uterus (D)</p> Signup and view all the answers

What occurs in the myometrium during pregnancy?

<p>Extensive growth involving hyperplasia, cell hypertrophy, and increased collagen production (C)</p> Signup and view all the answers

What is the orientation of the smooth muscle fibers in the inner and outer layers of the myometrium?

<p>Parallel to the long axis of the uterus (C)</p> Signup and view all the answers

What is the function of the venous plexuses and lymphatics in the connective tissue of the myometrium?

<p>To provide blood supply and drainage to the uterus (B)</p> Signup and view all the answers

What is the result of the increased collagen production by the smooth muscle cells in the myometrium during pregnancy?

<p>Strengthening of the uterine wall (B)</p> Signup and view all the answers

What is the primary consequence of the cyclic changes in ovarian hormone levels during the menstrual cycle?

<p>Cyclic modifications of the endometrium (C)</p> Signup and view all the answers

What is the approximate duration of the menstrual cycle?

<p>28 days (D)</p> Signup and view all the answers

During which phase of the menstrual cycle does the uterine mucosa grow rapidly?

<p>Proliferative phase (D)</p> Signup and view all the answers

What is the primary component of the menstrual discharge?

<p>Degenerating endometrium (D)</p> Signup and view all the answers

What is the duration of the proliferative phase of the menstrual cycle?

<p>8-10 days (B)</p> Signup and view all the answers

When does the secretory phase of the menstrual cycle begin?

<p>At ovulation (A)</p> Signup and view all the answers

What is the average thickness of the uterine mucosa during the menstrual phase?

<p>0.5 mm (B)</p> Signup and view all the answers

Why is a woman fertile only during the years when she is having menstrual cycles?

<p>Because oocytes are produced (D)</p> Signup and view all the answers

What is the shape of the ovaries?

<p>Almond-shaped (A)</p> Signup and view all the answers

What is the function of the tunica albuginea?

<p>Protection of the ovary (C)</p> Signup and view all the answers

What is the region of the ovary that contains loose connective tissue and blood vessels?

<p>Medulla (A)</p> Signup and view all the answers

What is the epithelium that covers the ovary?

<p>Simple cuboidal epithelium (A)</p> Signup and view all the answers

What is the term for the highly cellular connective tissue and many ovarian follicles in the ovary?

<p>Cortex (B)</p> Signup and view all the answers

Where do the primordial germ cells migrate from during embryonic development?

<p>Yolk sac (B)</p> Signup and view all the answers

What is the result of the synchronized mitotic divisions of germ cells in the ovaries?

<p>Production of a few million interconnected oogonia (B)</p> Signup and view all the answers

What is the term for the suspensory ligaments of the ovary?

<p>Mesenteries (D)</p> Signup and view all the answers

What is the primary function of the uterine myometrium during parturition?

<p>To expel the infant from the uterus (C)</p> Signup and view all the answers

What happens to the uterine smooth muscle cells after pregnancy?

<p>They shrink and many undergo apoptosis (A)</p> Signup and view all the answers

What type of collagen fibers are found in the lamina propria of the endometrium?

<p>Non-bundled type III collagen fibers (A)</p> Signup and view all the answers

What type of epithelial cells line the uterine glands?

<p>Both ciliated and secretory cells (C)</p> Signup and view all the answers

What is the function of the basal layer of the endometrium?

<p>To remain relatively unchanged during the menstrual cycle (A)</p> Signup and view all the answers

What is the primary difference between the basal and functional layers of the endometrium?

<p>The level of cellularity and ground substance (B)</p> Signup and view all the answers

What is the function of the uterine glands in the endometrium?

<p>To secret substances that support embryonic development (C)</p> Signup and view all the answers

What happens to the uterus after pregnancy?

<p>It returns almost to its prepregnancy size (A)</p> Signup and view all the answers

What is the primary region of the uterine tube where fertilization normally occurs?

<p>Ampulla (A)</p> Signup and view all the answers

At what stage of development does the placenta itself produce progesterone and estrogens at levels adequate to maintain the uterine mucosa?

<p>4-5 months (A)</p> Signup and view all the answers

What is the typical length of the uterine tube?

<p>10-12 cm (C)</p> Signup and view all the answers

What is the term for the finger-like extensions that fringe the funnel-shaped opening of the uterine tube near the ovary?

<p>Fimbriae (B)</p> Signup and view all the answers

What is the structure that degenerates and is replaced by a large corpus albicans after 4-5 months of development?

<p>Corpus luteum (D)</p> Signup and view all the answers

What is the primary function of the tunica albuginea in the ovary?

<p>Protecting the ovary from mechanical damage (A)</p> Signup and view all the answers

What is the characteristic of the epithelial lining in the uterine tube?

<p>Simple columnar epithelium (D)</p> Signup and view all the answers

During which phase of the menstrual cycle does the uterine myometrium undergo significant hypertrophy and hyperplasia?

<p>Secretory phase (C)</p> Signup and view all the answers

What is the term for the lower cylindrical structure of the uterus that opens into the vagina?

<p>Cervix (A)</p> Signup and view all the answers

What is the primary function of the ligaments and mesenteries associated with the ovaries and uterine tubes?

<p>Supporting the uterine wall (B)</p> Signup and view all the answers

What is the approximate number of follicles present in the ovaries at birth?

<p>680,000 (C)</p> Signup and view all the answers

At what stage of meiosis do the primary oocytes arrest?

<p>Prophase I (A)</p> Signup and view all the answers

What is the term for the structure that surrounds the oocyte and includes follicular cells?

<p>Primordial follicle (B)</p> Signup and view all the answers

What is the approximate number of follicles remaining at puberty?

<p>460,000 (C)</p> Signup and view all the answers

What is the primary function of the uterine tubes?

<p>To facilitate fertilization (C)</p> Signup and view all the answers

What can occur as a result of chronic salpingitis?

<p>Blockage of oocyte or embryo transport to the uterus (A)</p> Signup and view all the answers

What is a common outcome of tubal pregnancies?

<p>Rupture of the uterine tube causing hemorrhage (B)</p> Signup and view all the answers

What is the primary function of the uterine tubes?

<p>To transport the oocyte or embryo to the uterus (C)</p> Signup and view all the answers

What is the structural characteristic of the uterus that allows it to accommodate a growing embryo?

<p>Thick, muscular walls (A)</p> Signup and view all the answers

What is the result of tubal ligation?

<p>Infertility (D)</p> Signup and view all the answers

What is the primary function of the ovaries in the female reproductive system?

<p>To produce eggs for fertilization (D)</p> Signup and view all the answers

What is the region of the uterine tube where fertilization normally occurs?

<p>Ampulla (B)</p> Signup and view all the answers

During which stage of fertilization does the acrosome reaction occur?

<p>When the sperm penetrates the zona pellucida (D)</p> Signup and view all the answers

What is the primary function of the uterine myometrium during the menstrual cycle?

<p>To contract and relax during menstruation (C)</p> Signup and view all the answers

What is the primary component of the corpus luteum?

<p>Luteal cells (B)</p> Signup and view all the answers

What is the primary function of the uterine endometrium?

<p>To prepare for implantation of the embryo (D)</p> Signup and view all the answers

What is the primary function of the ovarian follicles?

<p>To produce eggs for fertilization (B)</p> Signup and view all the answers

What is the primary function of the uterine tubes?

<p>To provide a environment for fertilization (C)</p> Signup and view all the answers

What is the primary function of the cervix?

<p>To allow the passage of sperm and menstrual fluids (B)</p> Signup and view all the answers

What is the primary function of the vagina?

<p>To allow the passage of sperm and menstrual fluids (C)</p> Signup and view all the answers

During which phase of the ovarian cycle do the cilia elongate and both cell types undergo hypertrophy?

<p>Follicular growth phase (A)</p> Signup and view all the answers

What is the primary function of the mucosal hypertrophy and increased local blood flow during ovulation?

<p>To facilitate the transport of the ovulated secondary oocyte into the tube (D)</p> Signup and view all the answers

What is the site where fertilization normally occurs in the female reproductive system?

<p>Ampulla (A)</p> Signup and view all the answers

What is the function of the glycoproteins secreted by the secretory peg cells in the epithelium?

<p>To provide a nutritive and protective mucus film for the oocyte and sperm (C)</p> Signup and view all the answers

What is the result of the sweeping muscular contractions of the fimbriae and ciliary activity during ovulation?

<p>The oocyte enters the infundibulum and moves to the ampulla (A)</p> Signup and view all the answers

What is the primary function of the uterine tubes?

<p>To catch the ovulated secondary oocyte and provide a microenvironment for fertilization (A)</p> Signup and view all the answers

What is the layer of the uterine wall that is in direct contact with the uterine cavity?

<p>Endometrium (B)</p> Signup and view all the answers

During which event does the uterine tube facilitate the transport of the embryo undergoing cleavage to the uterus?

<p>Cleavage (D)</p> Signup and view all the answers

What is the structure that suspends the ovary in its position?

<p>Suspensory ligament of the ovary (D)</p> Signup and view all the answers

What is the region of the uterus where the uterine tube meets the uterus?

<p>Isthmus (C)</p> Signup and view all the answers

What is the primary function of progesterone in the early stages of embryonic development?

<p>Inhibiting strong contractions of the myometrium (A)</p> Signup and view all the answers

What is the primary function of the cervix during the menstrual cycle?

<p>Regulating the flow of menstrual discharge (D)</p> Signup and view all the answers

What is the primary function of the uterine secretion in the early stages of embryonic development?

<p>Facilitating the implantation of the embryo (A)</p> Signup and view all the answers

What is the consequence of the drop in progesterone levels during the menstrual cycle?

<p>Increased synthesis of prostaglandins (B)</p> Signup and view all the answers

Which layer of the endometrium is not affected by the decrease in progesterone levels during the menstrual cycle?

<p>Basal layer (B)</p> Signup and view all the answers

During embryonic implantation, what is the primary role of the trophoblast?

<p>To drive the events of implantation and penetrate the endometrium (C)</p> Signup and view all the answers

What is the duration of the implantation process?

<p>About 3 days (A)</p> Signup and view all the answers

In which stage of development does the embryo enter the uterus as a blastocyst?

<p>About 5 days after ovulation (D)</p> Signup and view all the answers

What is the result of the interaction between the trophoblast and the endometrial epithelium during implantation?

<p>The penetration of the trophoblast into the underlying stroma (B)</p> Signup and view all the answers

What is the purpose of the functional layer of the endometrium during implantation?

<p>To provide a site for embryonic implantation (B)</p> Signup and view all the answers

What is the embryological origin of the mammary glands?

<p>Invaginations of surface ectoderm along the ventral lines (A)</p> Signup and view all the answers

What is the primary function of the lactiferous ducts in the mammary glands?

<p>To transport milk to the nipple (A)</p> Signup and view all the answers

What is the characteristic of the epithelium lining the vagina?

<p>Stratified squamous nonkeratinized (B)</p> Signup and view all the answers

What is the structure that supports the ovary in its position?

<p>Mesovarium (B)</p> Signup and view all the answers

What is the histologic structure of the mammary glands dependent on?

<p>Age, sex, and physiologic status (D)</p> Signup and view all the answers

What is the main function of proteases during embryonic implantation?

<p>To digest stroma components, allowing the embryo to embed itself (C)</p> Signup and view all the answers

Which part of the embryo develops into the amnion and yolk sac?

<p>Bilaminar embryonic disc (D)</p> Signup and view all the answers

What is the primary source of nutrients for the embryo during the ninth day after ovulation?

<p>Blood in the lacunae (C)</p> Signup and view all the answers

What is the function of the cytotrophoblast cells during implantation?

<p>To synthesize anti-inflammatory cytokines (D)</p> Signup and view all the answers

What is the outcome of the histologic changes in the endometrial stroma following implantation?

<p>Enhanced local immune tolerance for the embryo (D)</p> Signup and view all the answers

What is the primary consequence of mucosal damage or adhesions caused by chronic salpingitis?

<p>Blocked transport of the oocyte or embryo to the uterus, leading to infertility or ectopic pregnancy (B)</p> Signup and view all the answers

What is the characteristic of the uterine tube that makes it unable to contain the growing embryo?

<p>Its small diameter and inability to expand (C)</p> Signup and view all the answers

What is the potential outcome of tubal pregnancy if left untreated?

<p>Potentially fatal hemorrhage due to rupture of the uterine tube (C)</p> Signup and view all the answers

What is the role of the lamina propria in tubal pregnancy?

<p>To react like the uterine endometrium and form decidual cells (D)</p> Signup and view all the answers

What is the primary function of tubal ligation as a surgical type of contraception?

<p>To block the transport of the oocyte or embryo to the uterus (C)</p> Signup and view all the answers

What is the term for the entire endometrium after implantation?

<p>Decidua (D)</p> Signup and view all the answers

What is the area between the implanted embryo and the myometrium?

<p>Decidua basalis (A)</p> Signup and view all the answers

What is the region of the uterus that thins as the embryo gets larger?

<p>Decidua capsularis (D)</p> Signup and view all the answers

What is the area on the side of the uterus away from the embryo?

<p>Decidua parietalis (D)</p> Signup and view all the answers

What is the membranous extraembryonic structure that appears during the second week of development?

<p>All of the above (D)</p> Signup and view all the answers

What is the structure that connects the embryo to the placenta?

<p>Umbilical cord (D)</p> Signup and view all the answers

What is the function of the decidua basalis?

<p>To separate the embryo from the myometrium (C)</p> Signup and view all the answers

What is the structure that separates the embryo from the uterine cavity?

<p>Decidua capsularis (C)</p> Signup and view all the answers

What is the term for the maternal blood vessels that supply the placenta?

<p>Maternal artery (A)</p> Signup and view all the answers

What is the structure that carries oxygenated blood to the embryo?

<p>Umbilical vein (D)</p> Signup and view all the answers

What is the result of the initial attachment of the embryo to the ventral or dorsal walls of the uterus?

<p>The placenta will be interposed between the fetus and the vagina. (C)</p> Signup and view all the answers

What is the characteristic of the cervix that differs from the rest of the uterus?

<p>It is the lower, cylindrical part of the uterus. (D)</p> Signup and view all the answers

What is the primary function of the lactiferous ducts in the mammary glands?

<p>To facilitate the passage of milk from the mammary gland to the nipple. (D)</p> Signup and view all the answers

What is the structure that carries oxygenated blood to the embryo during pregnancy?

<p>Maternal blood vessels. (D)</p> Signup and view all the answers

What is the primary consequence of the interaction between the trophoblast and the endometrial epithelium during implantation?

<p>The formation of the placenta. (B)</p> Signup and view all the answers

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