1. How many spermatids are formed from 10 spermatogonium B?  a. 20 b. 40 c. 80 d. 160 2. Oogenic growth is due to the following processes EXCEPT  a. increase in ribosomes. b. increase in mRNA transcripts. c. formation of cortical vesicles. d. formation of mitochondrial clouds. 3. The oocyte nucleus is transformed into a germinal vesicle due to the following events EXCEPT a. the formation of cortical granules. b. the formation of the lampbrush chromosomes. c. the increase in the activity of transcription factors d. the amplification of genes for ribosomal RNA synthesis.

Why is a second polar body expelled after fertilisation (select one) a. The oocyte must recativate the incomplete meiosis before fusing with the sperm b. To remove excess cytoplasm  c. Before fusion with the sperm it must complete mitosis d. The fertilised oocyte is not a haploid cell until it expels the sperms mitochondria

What important change happens to sperm in the female reproductive tract? (select one) a. Capacitation which increases sperm motility b. The activation of the microtubule motors in the sperm tail c. The outer dense fibres become less rigid d. The sperm head decondenses releasing the DNA

77. The type of feedback that estrogen and progesterone are exerting on the gonadotropins after month 1 in this figure is ________________ and after month 2, _______________ is secreting these two hormones. A. Positive ; growing fetus B. Positive ; placenta C. Positive ; corpus luteum D. Negative ; growing fetus E. Negative ; corpus luteum F. Negative ; placenta

Events that leads to the production of Siamese/conjoined twins.

1. Which of the following statements about hormone regulation of the female reproductive cycle is FALSE? A. LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. B. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. C. Both progesterone and estradiol are produced by the follicles D. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol. 2. What hormone causes Leydig cells to make testosterone? A. Follicle Stimulating Hormone C. Inhibin B. Luteinizing Hormone D. Estrogen 3. Which hormone causes FSH and LH to be released? A. Testosterone C. Gonadotrophin-releasing hormone D. Progesterone B. Estrogen 4. Which reproductive hormone that helps in endometrial growth, ovulation and calcium absorption? A. Follicle Stimulating Hormone C. Inhibin B. Luteinizing Hormone D. Estrogen 5. Which hormone stimulates the ovaries to release estrogen?…

DIRECTION: Study the diagram below. Then, answer the analysis questions that follow. 3 HYPOTHALAMUS GNRH 1) 2. ANTERIOR PITUITARY ) Hormone 1 Hormone 2 (rising) (low) (surge due to • loop) Growing Follicie "OVULATION" ORGAN A Corpus Luteum (rising) Lthish) Hormone 3 (high) (high) Hormone 4 LEGEND Inhibits --- ORGAN B Stimulates Endometrium thickens "E is not fertilized" "Egg is fertilized" EVENTI EVENT II 3. ---

What is Patient A's karyotype? A. Down syndrome B. Patau syndrome C. Klinefelter syndrome D. Polycystic ovary syndrome

1 3. Enzymes are important during the process of fertilization. What would be the anticipated consequences if the level of acrosin was low or non-existent in the acrosome? 5. The Sperm would not be able to break through the protective coat on the egg (zona pellucida). meaning the sperm are unable to fertilize anegg 4. The morula contributes to a layer that becomes the embryo and to cells that become the placenta. What are the names of these structures? Illustrate and label these layers/structures. What is the name of the outer cell layer of the blastocyst and what does it give rise to? Does this layer contribute to the development of the embryo? 6. Explain the origins of the blastocyst cavity and what purpose does it serve? 7. Describe implantation of a blastocyst using simple, labeled diagrams.

Which of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus?     A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote     B. Sperm release enzymes to digest the protein layer of the secondary oocyte     C. The entry of a sperm into the secondary oocyte     D. The swimming of sperm from the vagina, through the uterus, and up to an oviduct