𝟏𝟒. 𝐆𝐞𝐧𝐞𝐫𝐚𝐥 𝐞𝐦𝐛𝐫𝐲𝐨𝐥𝐨𝐠𝐲 𝐫𝐞𝐯𝐢𝐬𝐢𝐨𝐧 💌 👌(مراجعة عامة لعلم الأجنة)

"𝗧𝗵𝗶𝘀 𝘃𝗶𝗱𝗲𝗼 𝗽𝗿𝗼𝘃𝗶𝗱𝗲𝘀 𝗮 𝗯𝗿𝗶𝗲𝗳 𝗼𝘃𝗲𝗿𝘃𝗶𝗲𝘄 𝗼𝗳 𝘁𝗵𝗲 𝗲𝗮𝗿𝗹𝘆 𝘀𝘁𝗮𝗴𝗲𝘀 𝗼𝗳 𝗽𝗿𝗲𝗴𝗻𝗮𝗻𝗰𝘆 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗮 𝘀𝘂𝗺𝗺𝗮𝗿𝘆 𝗽𝗿𝗲𝘀𝗲𝗻𝘁𝗲𝗱 𝗶𝗻 𝗱𝗶𝗮𝗴𝗿𝗮𝗺𝘀."

𝐂𝐡𝐚𝐩𝐭𝐞𝐫𝐬 (𝐭𝐢𝐦𝐞𝐬𝐭𝐚𝐦𝐩𝐬)💡الفصول (الطوابع الزمنية)
00:00 - Intro (مقدمة)
00:18 - Content (المحتوى)
02:43 - Sperm
05:30 - Ovum
07:10 - Fertilisation
10:00 - Cleavage
12:40 - Implantation
16:20 - Abnormal implantation
22:20 - Decidua
24:40 - Second week of development
29:24 - Formation of chorionic villi
31:40 - Chorion
34:23 - Gastrulation
39:46 - Functions of notochord
40:53 - Clinical application
42:10 - Third to eighth week of development
46:07 - Derivatives of intraembryonic coelom
47:37 - Folding
53:46 - Amnion
55:30 - Congenital abnormalities
56:20 - Yolk Sac
58:20 - Cong. abnormalities
1:00:33 - Allantois
1:01:30 - Congenital abnormalities
1:02:40 - Umbilical cord
1:05:13 - Congenital abnormalities
1:09:38 - Placenta
1:14:45 - Congenital abnormalities
1:18:34 - Outro

𝐌𝐂𝐐: 💪 👋

1. Which event marks the beginning of gastrulation?
A. Formation of primitive streak
B. Formation of bilaminar disc
C. Development of the amniotic cavity
D. Implantation

2. Which of the following gives rise to the gastrointestinal tract lining?
A. Mesoderm
B. Ectoderm
C. Endoderm
D. Neural crest

3. Which of the following is the origin of the extraembryonic mesoderm?
A. Cytotrophoblast
B. Epiblast
C. Hypoblast
D. Trophoblast

4. What is the function of hCG secreted early in pregnancy?
A. Stimulates uterine contractions
B. Maintains the corpus luteum
C. Promotes gastrulation
D. Triggers ovulation

5. What is the fate of the notochord in the adult?
A. Becomes the spinal cord
B. Forms the vertebral body
C. Persists as the nucleus pulposus
D. Degenerates completely

6. Which of the following is a function of the amniotic fluid?
A. Provides nutrients directly to the embryo
B. Acts as a barrier to gas exchange
C. Cushions the embryo and allows movement
D. Initiates the formation of blood cells

7. A patent urachus is due to failure of which of the following?
A. Closure of the vitelline duct
B. Obliteration of the allantois
C. Regression of the yolk sac
D. Fusion of the amnion and chorion

8. Excessive penetration of the endometrium only by the trophoblast will result in which of the following congenital abnormalities?
A. Placenta previa
B. Placenta accreta
C. Placenta percreta
D. Accessory placenta

9. A 30-year-old pregnant woman presents at 32 weeks with clear fluid leaking per vagina. Ultrasound confirms oligohydramnios. Which fetal membrane is most likely ruptured?
A. Chorion
B. Amnion
C. Yolk sac
D. Allantois

10. A 22-year-old primigravida at 18 weeks of gestation is diagnosed with a neural tube defect in the fetus. Elevated levels of alpha-fetoprotein are noted in the amniotic fluid. Which fetal membrane was sampled to obtain this fluid?
A. Chorion
B. Amnion
C. Yolk sac
D. Decidua basalis

11. A neonate is born with a persistent urachus. This anomaly involves a remnant of which fetal structure?
A. Allantois
B. Amnion
C. Yolk sac
D. Chorionic villi

12. A 35-year-old pregnant woman is diagnosed with placenta accreta. This condition is due to abnormal attachment of the placenta to which of the following structures?
A. Amnion
B. Chorion laeve
C. Decidua basalis
D. Decidua capsularis

13. A fetus is found to have amniotic band syndrome, causing limb constrictions. Which fetal membrane defect is most likely responsible?
A. Ruptured chorion
B. Defective yolk sac
C. Ruptured amnion
D. Incomplete formation of allantois

14. A patient with polyhydramnios is noted to have a fetus with esophageal atresia. What is the primary fetal membrane involved in amniotic fluid production?
A. Chorion
B. Amnion
C. Decidua
D. Allantois

😂💞 🤣 𝓦𝓪𝓲𝓽𝓲𝓷𝓰 𝓕𝓸𝓻 𝓨𝓸𝓾𝓻 𝓐𝓷𝓼𝔀𝓮𝓻 😂💞 🤣

𝐀𝐧𝐬𝐰𝐞𝐫𝐬 𝐭𝐨 𝐌𝐂𝐐𝐬: 👇😀
𝟭. 𝗔
𝟮. 𝗖
𝟯. 𝗕
𝟰. 𝗕
𝟱. 𝗖
𝟲. 𝗖
𝟳. 𝗕
𝟴. 𝗕
𝟵. 𝗕
𝟭𝟬. 𝗕
𝟭𝟭. 𝗔
𝟭𝟮. 𝗖
𝟭𝟯. 𝗖
𝟭𝟰. 𝗕

𝐅𝐨𝐫 𝐜𝐨𝐧𝐭𝐚𝐜𝐭: 📢
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𝐇𝐚𝐬𝐡𝐭𝐚𝐠: 🔍
#fertilization
#cleavage
#implantation
#fetal_membrans