Calendario de embarazo

Primer día del último período:		Días que han pasado:
Fecha de probable parto:		Días que quedan:
Duración del ciclo menstrual (días):		Porcentaje:

Trimestre 1

Trimestre 2

Trimestre 3

Mes 0 → 1

Mes 1 → 2

Mes 2 → 3

Mes 3 → 4

Mes 4 → 5

Mes 5 → 6

Mes 6 → 7

Mes 7 → 8

Mes 8 → 9

Semana 1

Primer día del último periodo

Semana 2

Semana 3

Concepcion del bebé

Semana 4

Semana 5

Prueba de embarazo positiva

Semana 6

Semana 7

Semana 8

Semana 9

Semana 10

Semana 11

El corazón late

Semana 12

Semana 13

Semana 14

Semana 15

Periodo de riesgo terminó

Semana 16

Semana 17

¿Niño o niña?

Semana 18

Semana 19

Siente las pataditas

Semana 20

El bebé escucha sonidos

Semana 21

Semana 22

Semana 23

Semana 24

Semana 25

Semana 26

Semana 27

Semana 28

El bebé puede respirar

Semana 29

Semana 30

Semana 31

Semana 32

Semana 33

El bebé tiene uñas

Semana 34

Semana 35

Semana 36

Semana 37

Semana 38

El bebé está a término

Semana 39

Semana 40

El bebé nacerá la próxima semana

Se requiere traducción - Español

Aquí usted puede sugerir traducciones o correcciones para su propio idioma. Un administrador será notificado y decidirá si publicar o no los cambios. Gracias por preocuparse!

Fertilization of the ovum to form a new human organism, the human zygote. (day 1 of fert.)

The zygote undergoes mitotic cellular divisions, but does not increase in size. This mitosis is also known as cleavage. A hollow cavity forms marking the blastocyst stage. (day 1.5-3 of fert.)

The blastocyst contains only a thin rim of trophoblast cells and a clump of cells at one end known as the "embryonic pole" which include embryonic stem cells.

The embryo hatches from its protein shell (zona pellucida) and performs implantation onto the endometrial lining of the mother's uterus. (day 5-6 of fert.)

If separation into identical twins occurs, 1/3 of the time it will happen before day 5.

Trophoblast cells surrounding the embryonic cells proliferate and invade deeper into the uterine lining. They will eventually form the placenta and embryonic membranes. The blastocyst is fully implanted day 7-12 of fert.

Formation of the yolk sac.

The embryonic cells flatten into a disk, two cells thick.

If separation into identical twins occurs, 2/3 of the time it will happen between days 5 and 9. If it happens after day 9, there is a significant risk of the twins being conjoined.

Primitive streak develops. (day 13 of fert.)

Primary stem villi appear. (day 13 of fert.)

A notochord forms in the center of the embryonic disk. (day 16 of fert.)

Gastrulation commences. (day 16 of fert.)

A neural groove (future spinal cord) forms over the notochord with a brain bulge at one end. Neuromeres appear. (day 18 of fert.)

Somites, the divisions of the future vertebra, form. (day 20 of fert.)

Primitive heart tube is forming. Vasculature begins to develop in embryonic disc. (day 20 of fert.)

The embryo measures 4 mm (1/8 inch) in length and begins to curve into a C shape.

The heart bulges, further develops, and begins to beat in a regular rhythm. Septum primum appears.

Branchial arches, grooves which will form structures of the face and neck, form.

The neural tube closes.

The ears begin to form as otic pits.

Arm buds and a tail are visible.

Pulmonary primordium, the first traits of the lung appear.

Hepatic plate, the first traits of the liver appear.

Buccopharyngeal membrane ruptures. This is the future mouth.

Cystic diverticulum, which will become the gallbladder, and dorsal pancreatic bud, which will become the pancreas appear.

Urorectal septum begins to form. Thus, the rectal and urinary passageways become separated.

Anterior and posterior horns differentiate in the spinal cord

Spleen appears.

Ureteric buds appear.

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Calendario de embarazo

Se requiere traducción - Español