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bloque embriología general tema ovulación, fecundación implantación introducción en la pubertad comienzan los ciclos menstruales de la mujer. esto ciclos. fecundación desarrollo fetal gametogénesis es el proceso por el cual las es proporcionar un medio nutritivo para la nidación y el mantenimiento del huevo. tema embriología humana. fecundación. implantación. organogénesis. La masa celular externa forma el trofoblasto (placenta) Blastocisto: Embrión de .

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A few days later it dries and falls off leaving a scar called navel. The first structure that is formed fecndacion a solid cell mass morula moves down through the fallopian tube.

Gestación de los animales

During this phase, the contractions occur every 2 minutes and are more intense, causing the exit of the child nidaxion half an hour.

It should be remembered that the basic rule of prevention is to never have sex without a condom with a person we do not have full confidence if they are currently having or have just had sex with an other person. Animation on pregnancy and the childbirth Spanish activity.

In humans the process is a bit more complicated, since the sperm is not attached to an egg but to an oocyte of the second type. This organ allows providing oxygen O2 and nutrients from the maternal blood to the embryo and transfer carbon dioxide CO2 and efcundacion products mainly urea produced by the embryo to maternal blood. In a doubt is always better to abstain or use a condom. The ovulation happens when the concentration of the LH in the blood reaches its maximum superiority over the concentration of the FSH.

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Multiple Choice Test Spanish activity. Otherwise the children would have twice as many chromosomes as their parents. It is implanted on the uterine’s mucous membrane nesting. This process is accompanied by a loss of blood and discomfort that may be serious, it lasts fecundaicon to 5 days and repeats every days, for this it is called the menstrual cycle.

In conclusion, the woman is the main character of this story. If inside the cells are two X chromosomes the individual is female and if there is an X and an Y the individual nidscion a man. These three diseases, which are or may be mortal, have increased significantly in the recent years becouse of the overconfidence.

We all should know how sex cells are formed and the process of the fertilization, pregnancy and childbirth. The placenta is formed from the capillaries of the embryo and of the endometrium. In case of women, the reproduction involves greater physical and mental effort than it happens for men, since it involves having a period every month for most of theirs life, pregnancy, childbirth and breastfeeding.

During this phase, uterine contractions start they occur nidavion 30 minutes at the beggining and at the end – every 3 minutes. This happens about six days after fertilization. There are many changes taking place in women’s body, both physical and chemical hormonesand psychological. Relate Pictures with Names Spanish activity.

17 EL PROCESO REPRODUCTIVO HUMANO

The chromosome is a DNA molecule coiled up around itself and a gene is a DNA segment that contains information about given characteristics of the organism. Then read the text on fertilization, embryonic development and the childbirth and perform the second Multiple Choice Test, the second Relate Pictures with Names and the Crossword. There are two different types of chromosomes that determine the sex of the individual, first one are called sex chromosomeswhich are the X chromosome and the Y chromosome, and the remaining 44 chromosomes are called non-sex chromosomes that are common equaly for women and men.

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Standards of prevention of sexually transmitted diseases.

La fecundación y la gestación: by irene 🙂 on Prezi

In the spermatogenesis each stem cell originates 4 spermatozoa, while in oogenesis the stem cell originates only one egg, in each division one of the two daughter cells is degraded. Read the explanations on the formation of gametes and the menstrual cycle and perform the first Multiple Choice Test and the first Relate Pictures with Names. In the following drawing the gametogenesis in the rat is showed. Activity in English is under construction. Then the zygote begins to multiply embryonic development and gives rise to the embryo.

There are two types of meiosis: In human, somatic cells have 46 chromosomes and gametes have 23 chromosomes. It can distinguish three phases: The fetus is urged forward producing the rupture of the amniotic sac water breakwhich is the sac filled with water where the embryo has been living, and the cervix expands from 4mm to 11cm.