presentation /pre·sen·ta·tion/ (pre″zen-ta´shun) that part of the fetus lying over the pelvic inlet; the presenting body part of the fetus. Cf. position and lie. 
vertex presentation,
vertex presentation
)
Presentation of fetus.
antigen presentation the hypothesis that macrophages not only ingest and process antigen, refining and complexing it with SRNA, but also present it in concentrated form at their surfaces to lymphocytes, thus inducing an immune response by the lymphocytes.
breech presentation presentation of the fetal buttocks or feet in labor; the feet may be alongside the buttocks (complete breech p.); the legs may be extended against the trunk and the feet lying against the face (frank breech p.); or one or both feet or knees may be prolapsed into the maternal vagina (incomplete breech p.) .
brow presentation presentation of the fetal brow in labor.
cephalic presentation presentation of any part of the fetal head in labor, whether the vertex, face, or brow.
compound presentation prolapse of a limb of the fetus alongside the head in a cephalic presentation or of one or both arms in a breech presentation.
footling presentation presentation of the fetus with one (single footling) or both (double footling) feet prolapsed into the maternal vagina.
funis presentation presentation of the umbilical cord in labor.
placental presentation placenta previa.
shoulder presentation presentation of the fetal shoulder in labor; see oblique lie and transverse lie.
transverse presentation see under lie.
vertex presentation that in which the vertex of the fetal head is the presenting part.
| vertex presentation n. Head presentation of the fetus during birth in which the upper back part of the fetal head is the presenting part. |
vertex presentation,
(in obstetrics) a fetal presentation in which the vertex of the fetus is the part nearest to the cervical os and can be expected to be born first. Compare breech presentation.
vertex presentation
Anterior presentation, crown presentation, occiput presentation Obstetrics A head position at the time of delivery, where the crown of the baby is the presenting part; VP is the easiest presentation to deliver. Cf
Cephalic presentation, Cesarean section.
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