in this exercise you will be tracing the gametes from the point at which the mal
ID: 3472851 • Letter: I
Question
in this exercise you will be tracing the gametes from the point at which the male and female gametes meet to form a zygote to the point at which it implants into the endometrium this time a proes caintd then four, and so on. At about day 3, the conceptus reaches the uterus as å 18 "little mulberry"). The morula floats around the uterus for another 2 to 3 days and continues to divide until it beco hollow sphere called a blastocyst. Note in Figure 28.3 that the blastocyst has two populations of cells: the rounded i cell mass and an outer layer of cells called the trophoblast. At about day 6, the blastocyst adheres to the endometrium and begins the process of implantation. The implan blastocyst secretes digestive enzymes that eat away the endometrial lining, and the endometrium reacts to the injury growing over and enclosing the blastocyst. The process of implantation is generally complete by the second week, a the time a woman's menstrual period would begin. Procedure Time to Trace In this exercise you will be tracing the gametes from the point at which the male and female gametes meet to form a zygote to the point at which it implants into the endometrium. Trace the pathway using Figure 28.4, and also fill in the space below. FIGURE 28.4 Female reproductive tract Start: Sperm and ovum meet in uterine tube End: Implanted blastocyst 686 Exploring Anatomy & Physiology in the l aboratoExplanation / Answer
Fertilization occurs when the sperm and an egg combines together to form a zygote.This zygote begins to divide as it moves towards the uterus.
It occurs over a course of 8-9 days and after implantation of zygote in uterine wall,9 months process takes plays.
Process of implantation in uterus in 9 days:
Day-1:Ovulation occurs and formation of zygote through fertilization.
Day-2:First clevage occurs which is a two cell stage.
Day-3to4:It is a four cell stage.
Day-4:Eight cell uncompacted morulus is formed.
Day-5:Transformed into eight cell compacted morulus which is called early blastocyst.
Day-6to7:It is late stage blastocyst,which is also called hatching.
Day-8to9:Implantation of blastocyst occurs at this stage.
Day-7:
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.