๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ๏ผๆฌ็ฏ๏ผ
่่ๅญธ (Embryology)
- ๆญคๅๅ็่งฃๅไฝ็ฝฎใๅๆง้ ๆๅใๆญฃๅธธ็ต็นๅญธๅ้จๅ็ต็น็ ็็ๅฏ็ฑ่่ๅญธ่งฃ้ใ
- ่ๅ ็ผ่ฒ็ด็ฌฌไธ้ฑๆ๏ผๆบ่ชๅๆข (primitive streak) ็้่็ดฐ่ (mesenchymal cells) ๅจๆณๆฎ่ ่ (cloacal membrane) ๅจๅๅฝขๆ็ต็นๅตดใ
- ้ไบๆณๆฎ่ ็บ่ฅ (cloacal folds) ๆผๅๆน่้ ญๅด็ธ้ฃ๏ผๅฝขๆ็ๆฎ็ต็ฏ (genital tubercle)๏ผๆผๅพๆน่ๅฐพๅด้จๅ็ธ้ฃๅฝขๆ็ฐ็ๆง้ (annulus)ใ
- ็ด็ฌฌ 6 ้ฑๆ๏ผๅบไธ็ๆณๆฎ่ ่็ฑ้ ญๅฐพๆนๅ่ขซๅ็บๆณๅฐฟ็ๆฎ่ (urogenital membrane) ่่่ (anal membrane)ใ
- ๅไธๆๆ๏ผๅคๅด็ๆฎ้็ช (lateral genital swellings) ็ผ่ฒ๏ผๅฐๅฝขๆ้ฐๅ (scrotum) ๆๅคง้ฐๅ (labia majora)ใ
ๅ 12-10๏ผๅๅงๆณๅฐฟ็ๆฎ็ซ (primitive urogenital sinus) ็็ผ่ฒใ็ฌฌ 4 ่ณ 6 ้ฑ้๏ผๅฐฟ็ด่
ธ้ (urorectal septum) ๅฐๆณๆฎ่
ๅ็บๅๆน็ๅๅงๆณๅฐฟ็ๆฎ็ซ่ๅพๆน็็ด่
ธใๅๅงๆณๅฐฟ็ๆฎ็ซไธ้จ่ๅฐฟๅ (allantois) ็ธ้ฃๅฝขๆ่่ฑใๆชไพ่่ฑๅบ้จ็็น็ช้ชจ็ๅฐฟ้ๆผๅฅณๆงๅฝขๆ่้จๅฐฟ้๏ผๆผ็ทๆงๅฝขๆ่้จ่ๅๅ่
บ้จๅฐฟ้ใๅๅงๆณๅฐฟ็ๆฎ็ซ้ ็ซฏ่จๅคง๏ผ็ขบๅฎๆงๆณๅฐฟ็ๆฎ็ซ๏ผๆผๅฅณๆงๅฝขๆ้ฐ้ๅๅบญ๏ผๆผ็ทๆงๅฝขๆ้ฐ่ๅฐฟ้ใ