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Structure-function relationship of
the placenta and its anomalies
Presented by Dr. Farhana Taher Sumya
Guided by Dr. Nahid Farhana Amin
Assistant Professor
Dept. of Anatomy, BSMMU
Structure of the placenta
2 cell stage
30 hours
4 cell stage
40 hours
12 cell stage
3 days
4.5 days 6 days
Structure of the Placenta (contd.)
A 7.5-day blastocyst
Structure of the Placenta (contd.)
A 9-day human blastocyst
Structure of the Placenta (contd.)
A 12-day blastocyst
Structure of the Placenta (contd.)
Primary Villi
A 13-day blastocyst
Structure of the Placenta (contd.)
Secondary Villi
At the end of third week
Structure of the Placenta (contd.)
Tertiary Villi
Structure of the Placenta (contd.)
Structure of the Placenta (contd.)
Decidual cell
Structure of the Placenta (contd.)
Chorionic villi
Structure of the Placenta (contd.)
At the end of 4th week
Structure of the Placenta (contd.)
Anchoring Villi
Structure of the Placenta (contd.)
At second month of development
Structure of the Placenta (contd.)
Structure of the Placenta (contd.)
Fetal part
Structure of the Placenta (contd.)
Maternal part
Structure of the Placenta (contd.)
Placental Exchange
Structure-function relationship
Structure-function relationship (contd.)
Structure-function relationship (contd.)
Gross structure of the placenta
Gross structure of the placenta (contd.)
Anomalies of the placenta
Battle-dore Placenta
Anomalies of the placenta (contd.)
Velamentous Placenta
Anomalies of the Placenta (contd.)
Anomalies of the Placenta (contd.)
Bilobed Placenta
Anomalies of the Placenta (contd.)
Placenta membranacea
Anomalies of the Placenta (contd.)
Circumvellate Placenta
Anomalies of the Placenta (contd.)
Succenturiata placenta
Anomalies of the Placenta (contd.)
Placenta previa
Anomalies of the Placenta (contd.)
Abruptio placenta
Anomalies of the Placenta (contd.)
Degenerative placental lesions
•Placental infraction
•Placental calcification
Anomalies of the Placenta (contd.)
Circulatory disturbances
• Maternal floor infarction
• Placental vessel thrombosis
• Hypertrophic lesion of the chorionic villi
Anomalies of the Placenta (contd.)
1. Placentitis
2. Chorioamnionitis
Placental Inflammation
Anomalies of the Placenta (contd.)
 1. Gestational Trophoblastic
Disease
 2. Chorioangioma(Hemangioma)
 3. Tumors Metastatic to the
Placenta
Tumors of the Placenta
Anomalies of the Placenta (contd.)
Hydatidiform mole
Anomalies of the Placenta (contd.)
THANK YOU

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Structure-function relationship of the placenta and its anomalies