Pregnancy

Pregnancy Understanding pregnancy, that is development embryo in in womb (uterus) Which taking place from since happen fertilization until process birth. You naturally Already know pregnancy on man generally taking place around 9 month or around 38 Sunday. Pregnancy on every animal need time Which No The same. On mouse or nation rodentia pregnancy taking place during 21 day, on dog during 60 day, buffalo 270 day, And elephant around 600 day. If You take note, the more big size body animal, the more long also pregnancy Which experienced. On moment pregnancy, happen a number of incident, between other development embryo, formation of embryonic membranes, placenta, and umbilical cord. Here will be explained more detailed from every incident the. 1. Development Embryo in In Uterus Development embryo started on moment egg succeed fertilized by sperm Which form zygote. Furthermore, zygote Which formed will moved by cilia Which there is on oviduct going to uterus. After reach time 24 O'clock, zygote will carry out cell division movements. Zygote from oviduct to uterus need time around 3 – 5 day. Zygote One cell egg Which has fertilized by sperm furthermore will experience division into two cells, four cells, eight cells, sixteen cells so form One group cell new Which shaped object round resemble fruit mulberry. Formed roundabout like fruit mulberry This called stadium morula. Morula This put self in lower mucosa womb And limited by something layer Which called zone pellucida. On development furthermore morula will form ball hollow Which called blastocyst. Finally, blastocyst experience differentiation become 3 part, that is become trophoblast (cells part Which outermost), embryoblast (cells part in), And blastocoel (cavity containing fluid). Change morula become blastocyst called Also process blastulation . Blastocytes Then move down to uterus And embed self in part endometrium. Process embedded blastocyst on endometrium This called implantation . Implantation occurs because trophoblast cells secrete enzymes proteolytic . Picture 1 Fertilizatio process And development zygote after fertilization happen And zygote implantation. On process furthermore, embryoblast Which happen will do division so that form group cell Which A little stand out called freckles seed, whereas cells trophoblast will emit something fluid, so that between trophoblast And freckles seed separated by something room Which containing fluid. Fluid This the more long will the more widespread. However thereby, between freckles seed And trophoblast Still each other relate on One place Which called coelom. Incident This called stadium blastula. After blastula formed, furthermore happen stadium gastrula (gastrulation). Circumstances on stadium This, that is happen growth cell Which different on freckles seed, And cells That split self form layer cells Which its nature different, between other form layer outside (ectoderm), that is layer cell Which near with trophoblast, layer in (endoderm), that is layer cell Which A little stand out to in room exocoelom, And layer middle Which called mesoderm. On development carry on from embryo, layer endoderm will develop become barrier between epithelium gastrointestinum, tool Respiratory, And a number of organs other. Layer mesoderma will form peritoneum, muscle, bone, And network tie, whereas layer ectoderm will develop form part skin And system nerve. 2. Formed Process on Embryo Membrane Moment period development, on embryo will formed membrane embryo. Membranes Which formed in outside embryo works as protector embryo And provide food for embryo the. Membranes Which formed the consists on pocket yellow egg, amnion, chorion, And allantois. Forms membrane the can You Look on picture following. Picture 2 Phases formation membrane on embryo a. Pocket Yellow Egg Pocket yellow egg, that is membrane Which limited by layer endoderm. On a number of type animal, pocket yellow egg own function as provider food main for embryo. Different on man, pocket This works For provide place for formation blood. In side That, in in pocket yellow egg there is cells that will later experience development into spermatogonia or oogonium after baby become individual mature. Horizon Biologi b. Amnion Membrane amnion is thick membrane that functions as protector. When the embryo experiences growth, amnion will envelop embryo to form a filled chamber fluid, Which called fluid amnion. Fluid amnion This useful For protect embryo from impact, friction, And Also help in the process of regulating body temperature embryo. c. Chorion Chorion is derivative (derivative) Which part originate from development ectoderm And mesoderma trophoblast. Chorion is main placenta. Chorion looks envelop amnion And pocket yellow egg. d. Alantois Alantois is membrane Which shaped vascular small For place beginning start blood formed. Alantois This works For process respiration, channel food, And excretion. 3. Formed Placenta Placenta Which known with Name other placenta or placenta, formed on month third from pregnancy. Form placenta This flat originate from development chorion And part endometrium. Placenta own a number of function main as following: 1) as place diffusion oxygen And food from blood Mother to fetus; 2) as place diffuse carbon dioxide And remainder metabolism fetus to blood Mother For discarded; 3) For protect so that body fetus No entered microorganisms; 4) place supply food Which shaped carbohydrate, proteins, calcium, And iron from body Mother to body fetus; 5) producer hormone Which required For arrange process Which happen during pregnancy. 4. Rope Navel When embryo experience growth And development, on part chorion happen growth Which its structure shaped like fingers. Structure like fingers This known as villi chorion . Villi chorion Lots contain vessels blood fetus Which originate from allantois. Villi chorion Which Keep going experience growth will submerged on something room Which contain blood Mother And called room intervilli. With circumstances like This, blood Which originate from Mother will each other close by with blood fetus. However thereby, blood Mother And fetus No mixed. Villi chorion own function main as place happen exchange oxygen And food Which originate from blood Mother to baby. Furthermore, food Which originate from vessels blood villi the circulated to vein umbilicus or navel, whereas remains metabolism Which originate from body baby issued through arteries umbilicus And diffuse to in blood Mother Rope navel formed from layer outermost amnion Which Lots contain arteries umbilicus And vein umbilicus. In side That, rope navel Also strengthened by something network tie flat Which originate from allantois. On moment baby has born, rope navel Still still stick on stomach baby until a number of day forever. After rope navel regardless, on stomach baby will seen used vortex.