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- Although the male ejaculate contains hundreds of millions of sperm, ________. most do not reach the oocyte most are destroyed by the alkaline environment of the uterus it takes millions to penetrate the outer layers of the oocyte most are destroyed by cap a citationWhat would happen if the trophoblast did not secrete hCG upon implantation of the blastocyst? Tire cells would not continue to divide. Tire corpus luteum would continue to produce progesterone and estrogen. Menses would flush the blastocyst out of the uterus. Tire uterine mucosa would not envelop the blastocyst.What is the function of the epididymis? sperm maturation and storage produces the bulk of seminal fluid provides nitric oxide needed for erections spermatogenesis
- 2. Describe the steps of gonad determination in the male and the female beginning with the migration of the primordial germ cells to the genital ridge.2. Fill in the missing terms in the following description of the menstrual cycle. The menstrual cycle is a _(1) day cycle of development of an egg in the _(3). (2) and changes in the in preparation for a possible pregnancy. All of this is controlled by changing hormone levels. One egg per month begins to develop due to the hormone _(4). being released from the (5) The ovary surrounding the developing egg then releases the hormone (6) _(8). that causes _(7) The releases the hormone (9) in large quantities and this causes _(10), the release of the egg. The empty follicle forms (11). that secretes the hormone a scar called the (12) that causes If the egg is fertilized on its way to the (13)_ that causes produces the hormone _(16)_ _(15)_ uterus, the _(14) If the egg is not fertilized, the lining of the uterus (endometrium) is shed as menstrual flow for about 5 days. 1. 28 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.4. explain in details about menopause explain in details about fertility in men and women.
- 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 of4. the blood testis carrier a. reforms around new primary spermatocytes b. is formed by tight junction between leydig cells c. protects spermatogonia from immune system d. doesn't allow blood to contact cells within seminiferous tubules8. Please give a brief explanation of the pregnancy classifications (A, B, and C). Could you kindly clarify in your own words?
