ارقام مهمة في Embryology
1. 36 hours (36 ساعة):
What happens: About 36 hours after fertilization, the process of mitotic division of the zygote begins.
2. 4th day (اليوم الرابع):
What happens: On the fourth day after fertilization, the divided cells travel through the fallopian tube to the uterine cavity.
3. 5th day (اليوم الخامس):
What happens: On the fifth day, the blastocyst begins to attach to the uterine lining.
4. 5th month (الشهر الخامس):
What happens: In the fifth month of pregnancy, the fetus grows significantly, and its features begin to emerge.
5. 6th day (اليوم السادس):
What happens: On the sixth day after fertilization, the embryo begins to firmly attach to the uterus.
6. 10th day (اليوم العاشر):
What happens: On the tenth day, a hole starts to form in the uterine wall.
7. 7th day (اليوم السابع):
What happens: On the seventh day after fertilization, the cells in the embryo begin to differentiate into primary layers.
8. 11th day (اليوم الحادي عشر):
What happens: On the eleventh day after fertilization, the bilaminar embryonic disc is formed.
9. 3rd week (الأسبوع الثالث):
What happens: In the third week, the development of major organs and body systems begins, and the fetus takes on its basic shape.
10. 4th week (الأسبوع الرابع):
What happens: In the fourth week, the embryo begins the full formation of internal organs, and physical features start to appear.
11. 5th week (الأسبوع الخامس):
What happens: In the fifth week, the development of tissues and internal organs in the embryo begins.
12. 7th month (الشهر السابع):
What happens: In the seventh month, the fetus continues to grow, and the internal organs begin functioning more in sync.
13. 47 chromosomes (47 كروموسوم):
What happens: This condition refers to Down syndrome, where a person has 47 chromosomes instead of 46.
14. 44XXY chromosomes (44XXY كروموسوم):
What happens: This condition refers to Klinefelter syndrome, where a person has 47 chromosomes, with an additional X chromosome.
15. 46 chromosomes (46 كروموسوم):
What happens: These are the normal chromosomes for humans, with each person having 46 chromosomes (23 pairs).
16. 5th Arch (القوس الخامس):
What happens: The fifth arch is a non-functional embryonic arch that appears during the development of the face and neck.
17. 2-3 weeks (2-3 أسابيع):
What happens: This period refers to the early embryonic stage, where the formation of the embryonic layers begins, and tissues start to form.
18. 5th month (الشهر الخامس):
What happens: In the fifth month, the fetus grows significantly, and human features begin to appear.
19. 7th day (اليوم السابع):
What happens: On the seventh day, differentiation begins in the embryonic cells to form different tissues.
20. 3rd month (الشهر الثالث):
What happens: In the third month, the fetus begins to grow faster, and its external features start to develop.
21. 7th day (اليوم السابع):
What happens: The seventh day is a critical stage where the cells in the embryo begin differentiating to form various tissues.
22. 5th day (اليوم الخامس):
What happens: On the fifth day, the embryo starts to attach to the uterus after the complete division of cells.
#قسم_Embryology
#اللجنة_العلمية_دفعــ43ـة
