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- 5. Do other organs or organ systems develop at the same time? Are they related to the function of your assigned organ or organ system? 6. A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm. If it were possible to fertilize one of the woman's eggs by removing a sperm nucleus and injecting it into the egg, could this procedure ever produce viable offspring? Why or why not? dorotondinD. A Healthy Pregnancy Research is or Problem: man nt of ot of Fetal development takes place in a relatively short amount of time. In just nine months, a functioning human being develops from a zvgote formed from the joining of an egg and a sperm. Dunng that time, the fetus receives from its mother through the placenta and umbilical cord everything thát lt needs to grow and develop into a baby. ree Form the following: ater vith a. Hypothesis: Develop an explanation for how a woman's lifestyle choices affect the substances that enter the fetus. b. Collect Data and Make Observations: Research the fetal development of the organ or organ system your teacher has assigned to you. Use your textbooks, library resources, and ca7.msscience.com or any other internet resources. of a Find the answers to these questions: 1. At what point during a pregnancy does this organ or system begin to develop, function, and become fully developed? 2. Are there specific substances that are harmful to this organ…14. Female gonads that produce eggs and the female sex hormones. About 3 cm by 1cm in size 15. Thick-walled muscular organ, shaped like an upside-down pear, when fetusdevelops. Normally about 5 cm wide. 16. Opening of uterus from vagina (joins vagina at nearly right angles). 17. Muscular tube with mucus-secreting lining; receives penis during intercourse and serves as a birth canal. 18. "Fallopian tubes" Cilia-lined tubes that transport eggs from ovaries to uterus.
- 5. How do oral contraceptives, specifically birth control pills, prevent pregnancy? I. Birth control pills make the uterine lining inhospitable to a fertilized egg. II. Birth control pills thicken the cervical mucus to hinder sperm movement. III. Birth control pills stop the pituitary gland from producing FSH and LH in order to prevent ovulation. IV. Birth control pills contain high levels of estrogen and progesterone hormones that prevent ovulation. * I, III, and IV only I, II, III, and IV III and IV only O I and II only1. How is the reproductive system designed to perform its functions? 2. How do the parts (each part) of the reproductive system work together? 3. Why is it advantageous that the testes are located outside the abdominal cavity? 4. Trace the pathway of sperm from the testis to outside the body 5. Explain the presence of numerous mitochondria in the sperm 6. What adaptations do sperm posess for fertilozation? 7. How is the uterus structurally adapted for holding a developing baby? 8. What happens when the egg is not fertilized?1. Fill in the blanks with the terms in the list: antrum, corpus luteum, first polar body, Graafian, granulosa, oogenesis, oogonia, ovaries, ovum, primary, primary oocyte, primary spermatocyte, primordial, second polar body, secondary, secondary oocyte, secondary spermatocytes, spermatids, spermatogenesis, spermatogonium, spermiogenesis, testes 2. Circle the correct bolded terms to complete the sentences. In males, gamete production is known as This process occurs in the seminiferous tubules of the outside of the seminiferous tubules, spermatogonia divide by mitosis/meiosis to build up the stem cell line. After puberty, the division of these cells will produce two haploid/diploid cells. Near the The _will undergo meiosis and the will continue to divide by mitosis. Meiosis I produces two haploid/diploid cells called These cells undergo Meiosis Il to form four haploid/diploid cells called These cells mature into functional sperm in the process of
- 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.32. The lines in the palm that crease when the thumb opposes the other digits are an example of: tension lines premature aging movement lines soft tissue adhesions 33. Fertilization can occur in the uterine tube, 12-24 hours after ovulation, if sperm reaches the ovum. True False5#. What drugs and medicines are being developed to treat condition that pose risks during pregnancy?
- Some couple practice natural family planning (also known as the rhythm method of birth control), which involves abstaining from sexual intercourse during the time that a woman can become pregnant in her menstrual cycle. The egg only survives in the fallopian tube from 24 hours after ovulation, so conception can only happen during a 24-hour period each month. However, this form of contraceptive is very unreliable and is not recommended for couples who are actively trying to avoid pregnancy. Which of the following is NOT a reason why this form of birth control is unreliable? A. Sperm can survive in the fallopian tubes for 3 to 5 days. B. Ovulation can be affected by stress or illness. C. Women always ovulate on the same day of their menstrual cycle every month. D. It is difficult to predict exactly when in her cycle a woman ovulates.10.A non-growing follicle containing a primary oocyte stalled in prophase I and surrounded by a single layer of flattened follicle cells is called what? 11.An endocrine organ that forms after ovulation and secretes progesterone and estrogen is It forms during the the phase of the menstrual cycle. 12.What is the difference between a menstrual cycle and the estrus cycle?10. In which organ in the female reproductive tract does fertilization occur? Group of answer choices fallopian tube vagina ovary uterus