Embryology Ch 2
Terms
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- A couple has had unprotected intercourse for 16 months and have not become pregnant. They ask if fertility drugs are indicated. Your most accurate response is:
- Physical examination should precede the use of fertility drugs because variocele or testicular abnormality can account for 40% of male infertility.
- Oocytes that are arrested prior to fertilization have ___ chromosomes and __N DNA
- 23 chromosomes and 2N DNA
- Type B spermatogonia have ___ chromosomes and __N DNA
- 46 chromosomes and 2N DNA
- Spermatids have ___ chromosomes and __N DNA
- 23 chromosomes and 1N DNA
- Oocytes in the mature follicle just prior to ovulation have ___ chromosomes and __N DNA
- 23 chromosomes and 2N DNA
- Primary spermatocytes in prophase I have ___ chromosomes and __N DNA
- 46 chromosomes and 4N DNA
- Spermatozoa have ___ chromosomes and __N DNA
- 23 chromosomes and 1N DNA
- The ovum has ___ chromosomes and __N DNA
- 23 chromosomes and 1N DNA
- The zygote has ___ chromosomes and __N DNA
- 46 chromosomes and 2N DNA
- The first polar body has ___ chromosomes and __N DNA
- 23 chromosomes and 2N DNA
- Ovulation occurs during which phase?
- the proliferative phase
- Progestrone is produced by the:
- Corpus luteum
- At what time does regression of the corpus luteum after ovulation occur?
- 10 - 12 days
- How long is the menustral phase of the menustral cycle?
- 4 - 5 days
- The Average time of ovulation after day one of the ovarian cycle?
- 14 days
- usual time of survival spermatozoa in the female reproductive tract
- 24-48 hours
- time after ovulation when ovum can be fertilized
- less than 24 hours
- approx time for blastocyst to develop after fertilization
- 4-5 days
- ovulation is produced by:
- burst of LH
- The first few days of the menstrual cycle that follow menstruation are part of the:
- proliferative phase
- The male gametes with heads, necks, and acrosomes are called:
- spermatozoa
- Which if the following statements is accurate regarding evaluation of a couple who have not conceived after unprotected sex for 1 1/2 years
- Physical exam on both partners should be the first step
- Ultrasound confirmation of a pregnancy is prompted by a missed period in 23 yr old healthy woman with 6 implanted embryos...likely explanation:
- prior treatment with clomiphene citrate
- During gametogenesis, which of the following cells may be static for many years before proceeding to the next stage?
- primary oocyte
- Freshly manufactures sperm are less capable of fertilization until:
- capacitation occurs in the uterus or ovarian tube