Perkembangan Janin dan Plasenta

Summary

This video provides a detailed overview of fetal and placental development throughout pregnancy. It covers the stages from the first trimester, when the embryo begins forming basic structures like the face, to the final trimester, where the fetus becomes fully formed and ready for birth. The video also explains the critical role of the placenta in nourishing the fetus and ensuring proper growth. Key milestones include organ development, facial features, limb formation, and responses to stimuli. Additionally, the video touches on placental function and complications like preeclampsia.

Takeaways

• 😀 The development of the fetus begins in the first trimester with the fertilization of the egg by sperm, forming a zygote that develops into a morula and implants into the uterus.
• 😀 During the first month, the amniotic sac and placenta begin to form, and the fetus starts to develop basic features such as the face and early skeletal structures.
• 😀 In the second month, the fetus begins forming its bones and nervous system, while the heart and circulatory system start functioning, and the face and limbs begin to form.
• 😀 By the third month, the internal organs, such as the liver and kidneys, start functioning, and the fetus can move its mouth and limbs. Gender determination becomes possible through ultrasound.
• 😀 In the fourth month, the baby’s facial features become more defined, including visible ears and the ability to suck. Male and female fetuses show early reproductive organ differentiation.
• 😀 The fifth month sees the development of hair, movement, and skin protection with a white coating. The baby is also growing in size, reaching a length of approximately 25 cm.
• 😀 By the sixth month, the fetus can open its eyes, respond to sounds, and move. Its skin remains thin, and it measures around 30 cm in length and weighs about 900 grams.
• 😀 During the seventh month, the fetus develops the ability to respond to light and pain, and its body accumulates more fat as it prepares for birth, with a weight of around 1,000 grams.
• 😀 At the eighth month, the fetus continues to develop its lungs and brain, and body fat increases significantly. The fetus is more active, kicking strongly as it grows in size.
• 😀 By the ninth month, the fetus is nearly fully developed, with functional eyes, ears, and lungs. It is more sensitive to touch and light, and the head positions downward in preparation for birth.

Q & A

What is the first step in the development of an embryo after fertilization?

The first step after fertilization is the formation of a zygote, which travels to the uterus and becomes a morula, a cluster of cells resembling a raspberry.

At what stage does the amniotic sac begin to form during pregnancy?

The amniotic sac begins to form during the first month of pregnancy as the embryo develops.

What key developments occur during the second month of pregnancy?

During the second month, the nervous system starts developing, the heart begins to beat, and the embryo's facial features such as the eyes and mouth start to form.

By the end of the first trimester, how large is the embryo?

By the end of the first trimester, the embryo is roughly the size of a grain of rice.

What significant developments happen during the second trimester?

In the second trimester, the baby’s organs, including the brain and heart, continue to form. The baby also begins to move, and facial features such as the ears and mouth become more distinct.

When do the baby’s eyes start moving, and how large is the baby at the end of the fourth month?

The baby’s eyes begin to move by the fourth month, and the baby reaches a size of about 15 cm in length, weighing around 100 grams.

What is vernix, and when does it cover the baby’s skin?

Vernix is a protective white layer covering the baby’s skin, which forms during the fifth month of pregnancy.

What happens at the sixth month in terms of sensory development for the baby?

At the sixth month, the baby’s eyes are fully formed, it can respond to sound, and it begins to react to movements and even hiccups.

What significant changes occur in the seventh month of pregnancy?

In the seventh month, the baby starts to respond to light, sounds, and pain. It also begins to change positions and gain fat stores in preparation for birth.

At what point in the pregnancy is the placenta fully formed, and what is its primary function?

The placenta is fully formed by the fourth month of pregnancy and plays a vital role in nutrient exchange and waste removal between the mother and fetus.