Reproductive Systems and Gametogenesis

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

<p>Increased risk of congenital anomalies (A)</p> Signup and view all the answers

<p>Placental abruption or previa (B)</p> Signup and view all the answers

<p>44 (D)</p> Signup and view all the answers

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

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

<p>To give rise to body cavities (B)</p> Signup and view all the answers

<p>Smooth and covered by amniotic membrane (B)</p> Signup and view all the answers

<p>Visceral and parietal layers (A)</p> Signup and view all the answers

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

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

<p>500 g (D)</p> Signup and view all the answers

<p>It restores the diploid number of chromosomes (D)</p> Signup and view all the answers

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

<p>Mitosis of the zygote into blastomeres (C)</p> Signup and view all the answers

<p>Ampulla of the uterine tube (C)</p> Signup and view all the answers

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

<p>22 autosomes and 1 sex chromosome (D)</p> Signup and view all the answers

<p>It is the site of gastrulation. (B)</p> Signup and view all the answers

<p>It develops from the primitive node. (C)</p> Signup and view all the answers

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

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

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

<p>To develop into tertiary chorionic villi. (D)</p> Signup and view all the answers

<p>Formation of the tail and head folds. (B)</p> Signup and view all the answers

<p>It elongates with a broad cephalic and narrow caudal end. (A)</p> Signup and view all the answers

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

<p>Upper posterior wall of the fundus (B)</p> Signup and view all the answers

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

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

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

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

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

<p>Formation of the primitive streak (C)</p> Signup and view all the answers

<p>Synthesizing glycogen and fatty acids (B)</p> Signup and view all the answers

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

<p>It reduces to two layers (B)</p> Signup and view all the answers

<p>Excessive amniotic fluid over 1500-2000 ml (C)</p> Signup and view all the answers

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

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

<p>50 cm (A)</p> Signup and view all the answers

<p>38 weeks ± 2 weeks (A)</p> Signup and view all the answers

The process by which male and female gametes (sperm and egg) fuse to form a zygote, restoring the diploid number of chromosomes.

The repeated cell division of the zygote, resulting in blastomeres, which are embryonic cells that increase the number of cells without increasing the overall size of the embryo.

The cyclic changes occurring in the ovary every lunar month; it includes three stages - follicular, ovulation, and luteal.

The cyclic changes occurring in the endometrium every lunar month; it includes four phases - menstrual, proliferative, secretory, and ischemic.

The primary reproductive organs (gonads) that produce gametes. They are the testes in males and the ovaries in females.

The conversion of germ cells (diploid with 46 chromosomes) into male and female gametes (haploid with 23 chromosomes).

The female gamete, which contains 22 autosomes and one X sex chromosome.

The male gamete, which contains 22 autosomes and one sex chromosome (either X or Y).

The ball of cells formed from repeated cell divisions of the zygote during the first week of pregnancy.

The outer layer of cells surrounding the inner cell mass (embryoblast) of the morula. It plays a critical role in implantation.

The hollow sphere formed from the morula during the second week of pregnancy. It contains the inner cell mass (embryoblast) and the outer trophoblast.

A thickened linear band of epiblast cells formed in the caudal aspect of the embryo during the third week of development.

The process of the blastocyst embedding itself into the uterine lining (endometrium).

The cranial end of the primitive streak, serving as a signaling center for development.

The thickened and modified lining of the uterus during pregnancy. It provides nourishment and protection for the developing embryo.

A rod-like structure that forms along the midline of the embryo during the third week, crucial for development of the central nervous system and axial skeleton.

The process by which the flat embryonic disc transforms into a cylindrical embryo with a defined head, tail, and body during the fourth week.

The inner cell mass of the blastocyst splits into two layers: the epiblast (upper layer) and the hypoblast (lower layer).

The region where the umbilical cord develops during embryonic folding.

The fluid-filled sac that surrounds the developing embryo. It forms from the epiblast.

The process by which the embryonic disc gives rise to the three primary germ layers: ectoderm, mesoderm, and endoderm.

The small sac attached to the yolk sac, which eventually becomes the umbilical cord. It is formed from the hypoblast and the extraembryonic mesoderm.

The outermost germ layer that gives rise to the skin, nervous system, and sensory organs.

The middle germ layer that gives rise to muscles, bones, blood, and connective tissues.

The measurement taken from the top of the skull to the center point between the baby's buttocks. Used to assess fetal growth.

The measurement taken from the top of the skull to the heel of the baby. This measure is taken when the baby is in a standing position.

The developing human during the first 8 weeks of pregnancy, characterized by rapid growth and development of organ systems.

The developing human from the 9th week of pregnancy until birth, characterized by further growth and development of organs and body systems.

Abnormalities or defects in the development of a baby present at birth. They can range from mild to severe.

The structure that connects the fetus to the placenta, containing two arteries and one vein surrounded by Wharton's jelly.

A fluid-filled sac surrounding the embryo, allowing symmetric growth and regulating fluids.

The part of the placenta that transfers oxygen and nutrients from the mother to the fetus, while removing waste.

The abnormal implantation of the placenta in the lower part of the uterus, potentially causing bleeding during pregnancy.

A rare condition where the placenta attaches too deeply into the uterine wall, potentially leading to complications after birth.

When a fertilized egg implants outside of the uterus, most commonly in the fallopian tube.

Twins that originate from two separate eggs fertilized by two sperms, making them genetically distinct.

Twins that originate from a single egg fertilized by a single sperm, making them genetically identical.

A segmented structure derived from paraxial mesoderm, responsible for forming the vertebrae, ribs, muscles of the back, and dermis of the skin.

The part of the somite that differentiates into vertebrae, ribs, tendons, and cartilage.

The part of the somite that differentiates into muscles of the back and intercostal muscles.

The part of the somite that differentiates into the dermis of the skin.

The vital organ that facilitates nutrient and gas exchange between the mother and fetus during pregnancy.