![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Placenta: 3rd trimester
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![Intervillous space <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P02.png)
Intervillous space
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![Floating villi <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P01.png)
Floating villi
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![- Fetal connective tissue <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P03.png)
- Fetal connective tissue
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![- Fetal blood vessels <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P04.png)
- Fetal blood vessels
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![- Cytotrophoblast <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P05.png)
- Cytotrophoblast
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![- Syncytiotrophoblast <p>Villi appear similar to those in early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P06.png)
- Syncytiotrophoblast
Villi appear similar to those in early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![- Clumped nuclei <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P07.png)
- Clumped nuclei
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x
![- Fibrinoid <p>Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x</p>](https://digitalhistology.org/wp-content/uploads/2018/03/O.R.F.P.06.P08.png)
- Fibrinoid
Villi appear similar to those in the early placenta except that fetal connective tissue is more condensed; cytotrophoblast cells form a discontinuous layer beneath the syncytiotrophoblast; fibrinoid is seen in villi; and syncytiotrophoblastic nuclei tend to clump. Fetal capillaries are more numerous and are frequently located immediately beneath the syncytial layer. 400x