Ch16_Clinic_MC_P7.jpg 350 ntomy&Physiology; Coloring Workbook 21. On day 17 of a
ID: 134987 • Letter: C
Question
Ch16_Clinic_MC_P7.jpg 350 ntomy&Physiology; Coloring Workbook 21. On day 17 of a woman's monthly cycle 26. The notochord A. FSH levels are rising B. progesterone is being secreted C. the ovary is in the ovulatory phase D. the uterus is in the proliferative phase A. develops from the primitive streak B. develops from mesoderm beneath the primitive streak C. becomes the vertebral column D. persists as the nucleus pulposis in the 22. A sudden decline in estrogen and proges- intervertebral discs terone levels: A. causes spasms of the spiral arteries B. triggers ovulation C ends inhibition of FSH release D. causes fluid retention 27. Amniotic fluid A. prevents fusion of embryonic parts B. contains cells and chemicals derived from the embryo C. is derived from embryonic endoderm D. helps maintain a constant temperature 23. A sexually transmitted infection (STD that is a males than femaleslps more easily detected in males than females, is treatable with penicillin, and can cause lesions in the nervous and cardiovascular28. Which of the following is a shunt to bypass systems is: for the developing fetus the fetal liver? A. Ductus arteriosus B. Ductus venosus C. Ligamentum teres D. Umbilical vein C. syphilis D. herpes B. chlamydia 24. Which of the following are hormones asso- ciated with lactation? A. Placental lactogen B. Colostrum C. Prolactin D. Oxytocin 29. The usual and most desirable presentation for birth is: A. vertex B. breech C. nonvertex D, head first 25. The outer layer of the blastocyst, which attaches to the uterine wall, is the A. yolk sac B. inner cell mass D. trophoblast C. amnionExplanation / Answer
21. progestrone is secreted throughout the 3rd week of menstruation cycle.
22.if sudden estrogen and progestrone level drops, spasms of spiral arteries occurs which leads to contraction of endometrium, triggers the menstruation cycle(3-5days)
23. syphilis is the STI caused by bacterium Trepanoma palladium.
24. oxytocin- muscle contractions, which cause the muscles of the uterus to contract in labor. Oxytocin is released when the nipples are stimulated, it causes the alveoli to contract, which squeezes the milk out into the duct system. This is called a let down. A let down happens a few times while breastfeeding.
25. yolk sac
26. in later vertebrate development notochord becomes the part of vertebral column
27. amniotic fluid maintain temperature constant durin fetal development.
28. in fetus ductus venosus shunts a portion of left umbilical vein blood directly to vana cava and thus allows oxygenated blood to bypass the liver from placenta.
29. vertex , head first