Why is the period of growth in oogenesis prolonged compared to spermatogenesis? 2. Why is it necessary for the structure of the sperm to change prior to fertilization? 3. Why are follicle cells found to surround the oocyte? 4. Why is the fourth phase of development called gastrulation? 5. Why is the fertilized egg still considered a single cell?
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Answer the following questions briefly (3-5 sentences only).
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- Answer the following questions briefly (3-5 sentences only). 1. Why does oxygen consumption increase during gastrulation? 2. What is the purpose of applying tiny particles of carbon to the surface of the embryo? 3. What processes cause the change in the form of the embryo during gastrulation 4. Does the environment play a role in the movement of cells? 5. Why is the nuclei of the early cleavage cells considerably larger than they are in ordinary somatic cells?Match the following terms with their definitions. Question 7 options: 1 tightly packed sphere of 16 cells that has reached the uterus but has not yet implanted 2 consists of about 100 cells shaped with an inner cell mass and an outer trophoblast 3 daughter cell of cleavage 4 process of cell migration & differentiationinto 3 primary germ layers 1. morula 2. blastula/blastocyte 3. gastrulation 4. blastomereB. Gametogenesis Select the cells described by the statements below. Oogenesis Spermatogenesis primary spermatocytes secondary spermatocytes spermatids spermatogonia spermatozoa 1. Haploid male gametes. 2. Haploid female gamete. penis prepuce 3. Divide mitotically to form primary spermatocytes. 4. Cells composing germinal epithelium in ovary. 5. Large haploid cell released in ovulation. 6. Male cells formed by first meiotic division. 7. Large female cell formed by first meiotic division. 8. Male cells in which first meiotic division occurs. 9. Female cells in which first meiotic division occurs. 10. Large female cell formed by second meiotic division. C. Male Organs Select the structures described by the statements below. bulbourethral gland corpora cavernosa corpus spongiosum ejaculatory duct epididymis oogonia ovum polar bodies primary oocyte secondary oocyte 1. Male copulatory organ. 2. Male gonads. prostate gland prostatic urethra seminal vesicle seminiferous tubule testes vas…
- Respond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. - v Haploid cells resulting from meiosis II of a secondary spermatocyte. This continues to undergo mitosis throughout the reproductive life of the male. VThis represents the product of the first meiotic division. VThis is a diploid mitotic product that then undergoes meiosis. The male sex cell is fully formed at this stage of development. a. Spermatogonium b. Secondary spermatocyte C. Primary spermatocyte d. Spermatid e. SpermAnswer the following: 1. What are the groups of reproductive organs in males, and what are the functions of each group? 2. Which structures in males are homologous to the ovaries, the clitoris, the paraurethral glands, and the greater vestibular glands? 3. Trace the journey of sperm from its birth and fertilization. 4. Explain the development of an oocyte in the ovary through ovulation.Explain in 5-8 sentences. 1. Describe and illustrate meiosis and explain how it differs in oogenesis and spermatogenesis. 2. Detail the interconnection of the accessory glands and the spermatic ducts that transport spermatozoa. 3. What are the two muscles that influence the position of the testes within the scrotum and the effects?
- Identify whether the following statements are True or False. Answer it all. 4. Fertilization happens in the fallopian tube while gestation occurs in the uterus. 5. The sex of the embryo is determined by the male and female gametes 6. A sperm’s tail consists of a flagellum, midpiece contains mitochondria, and head contains the DNA. 7. Ovary delivers nutrients to the embryo.In 3 sentences or less, answer the following questions about the estrogen birth control pill for females. 1. How does this method of contraception work? 2. In which phase of the ovulation cycle does the hormone affect? 3. What is a surgical method of preventing pregnancy?In 3 sentences or less, answer the following questions about birth control pill for males. 1. Why is there no effective birth control pill for males? 2. What is a surgical method of preventing pregnancy? 3. Does the surgical method prevent formation of sperm? Why or why not?
- Discuss the following terms in detail 1. Fertilization 2. Cleavage 3. GastrulationMatch the labelled reproductive structure with the correct description. A A- F- G- E- E 1. Site of female hormone production 2. Site of fertilization 3. Site of implantation - endometrium 4. Muscular structure that supports the developing baby 5. Opening to the uterus 6. Birth canal 7. Storage for urine 8. Transports urine Number: Structure: A E F GFemale Reproductive System Assignment 1. Describe the structure and function(s) of each part of the female reproductive system.Organ Structure FunctionOvaries Uterine Tubes/ oviducts/ fallopian tubes Uterus Vagina 2. What are the functions of external accessory reproductive organs – Labia major, Labia minora, Clitoris, Vestibule? 3. Describe the major events of oogenesis? 4. Describe changes that occur in a follicle and its oocyte during maturation. 5. What causes ovulation? 6. What happen to an oocyte following ovulation? 7. Name the major female sex hormones and write functions of each. 8. Trace the events of the menstrual cycle. 9. What are some changes that may occur at menopause? 10. Describe the structure of a mammary gland.