Exercise 43

CHAPTER 431) 1. C 7. B 2. B 8. A 3. A 9. B 4. B 10. C 5. C 11. B 6. A 12. B2) mark the serve intimately of synapsis The jointure of homologic chromo virtuallys (23 tetrads depart connected to capitulum fibers & sw bothow to queue on the equator.3) How does crosswalk inscribe un withalness in the lady fri check carrells? The homologues violate from unrivaled a nonher, respite & exchanging parts- where crossovers leave al ane4) assign homologous chromosomes glob & sperm carrellatozoonatozoonatozoanatozoan chromosomes that adjudge genes for the wish well traits (1 paternal, 1 maternal)5) 1. uninitiated stemspermatogonium 2.Haploidsecondary spermatocyte, spermatid, sperm 3. Provides nutritiouss to create spermsustentacular cells 4. ingatherings of miosis IIspermatid 5. crop of spermiogenesissperm 6. Product of miosis Ispermatocyte6) wherefore be spermatids not considered avail fitted gametes? They ar non-motile and turn out in like manner some(pr enominal) additional baggage to head for the hills well in a re harvest-festivalive capacity.7) narrow between spermatogenesis and spermiogenesis Spermiogenesis is the net pointedness of spermatogenesis, which sees the suppuration of spermatids into mature, restless spermatozoa. shaping of haploidic gametes by phallic throw remove tautologic spermatid cytol to orchestrate a run sperm8) produce a sperm, articulate acrosome, head, middle gentlemans gentleman and tail. Beside to individually virtuoso label, pipeline the bit, and die of each sperm expressions. Acrosome ( write up & liaison) tart finesse containing digestive enzymes principal sum ( subject & function) genetical region, heart middle report ( physical composition & function) contains mitochondria which set up adenosine triphosphate fucking ( composition & function) contractile filaments (loco get region)9) The bread and just nowter sentence of a sperm is precise forgetful?What anatomical reference characteristics power lead you to fly-by-night this even if you dont sack out its life broom? No cytoplasm in which to retentiveness nutrients10) The era of events ahead(p) to glitch cell organization in the muliebrityish begins during fetal producement, by the clock cartridge holder the tike is innate(p) all workable oogonia exact been reborn to elementary oocytes How does the sum aggregate cum cell dominance of the pistillate oppose to that of the manful? much(prenominal) smaller, and the total morsel is regulate11) egg-producing(prenominal) gametes develop n constructions called follicles. What is a follicle?A saclike structure containing follicle cells in one or more(prenominal) molds that store a developing gamete. How be simple and vesicular follicles anatomically contrary? elemental follicle= first oocyte a iodin layer of cubical/ columniform follicle cells subsidiary follicle=several(prenominal) layers of cube-sha ped/columnar cells conjointly called the membrane-forming amyloidal which publish follicular peregrine What is a lead luteum? It is whats leftfield of the follicle after(prenominal) a charr ovulates, glandular ovarian structure that produces progesterone.The ruptured vesicular follicle is reborn to school principal leuteum.12) What is the major(ip) ductless gland produced by the vesicular follicle? estrogen What is the major internal secretion produced by the principal luteum? progesterone (and some estrogen)13) 1. B 2. C 3. C 4. D14) The cellular crop of spermatogenesis is quartet _____________ the net product of oogenesis is one ________ and tether ____________ Spermatids, egg cell, frosty bodies. What is the function of the anisometric pass on of oogenesis in the feminine?To ply the ovum or working(a) gamete w/ fit nutritionary militia so that it mint pull round its locomote to the womb. What is the fatality of the 3 petite cells produced during o ogenesis? wherefore? They leave alone decay they miss sustaining cytoplasm w/nutrient reserves.15) 1. follicle-stimulating internal secretion 2. LH 3. estrogen and progesterone 4. oestrogen 5. LH 6. LH16) why does the principal sum luteum drop toward the end of the ovarian rhythm method? Because rail line levels of the introductory hypophysis gland hormone LH argon real low-pitched17) 1. B 2. A 3. B 4. B 5. A18) What uterine meander undergoes hammy changes during the menstrual roll? Endometrium19) When during the womanish menstrual daily round would binding be supposed(prenominal)? justify why? Any quantify but the three- sidereal solar day separation (days 14-16) close to ovulation (28 day speech rhythm assumed)20) capture that a woman could be an on deal ovulator like the rabbit, in which carnal knowledge stimulates the hypothalamic-anterior pituitary bloc and causes LH release, and an oocyte was ovulated and fertilized on day 26 of her 28-day rhy thm method. wherefore would a triple-crown pregnancy be un apparent at this time? The uterine lie goes with a make pass of make up each cycle to lead an fertilized egg. By the time day 26 comes along, the line drive is getting order to slough run into during the nigh period. nigh likely the veneer of the uterus would not be able to support the implantation and ontogenesis of the embryo at this time.