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. 
cephalic presentation,
presentation [prez″en-ta´shun]
)
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.
| cephalic presentation n. Presentation of the fetus headfirst during birth. |
cephalic presentation,
a classification of fetal position in which the head of the fetus is at the uterine cervix. Cephalic presentation is usually further qualified by an indication of the part of the head presenting, such as the occiput, brow, or chin.
presentation [prez″en-ta´shun]
that part of the fetus lying over the pelvic inlet; the presenting body part of the fetus. See also position and lie.
breech presentation presentation of the fetal buttocks, knees, or feet in labor; the feet may be alongside the buttocks (complete breech presentation); the legs may be extended against the trunk and the feet lying against the face (frank breech presentation); or one or both feet or knees may be prolapsed into the maternal vagina (incomplete breech presentation).
Breech presentation. From McKinney et al., 2000.
antigen presentation presentation of ingested antigens on the surface of macrophages near histocompatibility antigens; see also antigen presentation.
cephalic presentation presentation of any part of the fetal head in labor, whether the vertex, face, or brow.
compound presentation prolapse of one of the limbs of the fetus alongside the head in cephalic presentation or of one or both arms alongside a presenting breech at the beginning of labor.
footling presentation presentation of the fetus with one foot (single footling) or two feet (double footling) prolapsed into the maternal vagina.
funic presentation presentation of the umbilical cord in labor.
placental presentation placenta praevia.
shoulder presentation presentation with the fetal shoulder as the presenting part; see oblique lie and transverse lie.
transverse presentation transverse lie.
cephalic presentation
Obstetrics Any position of the baby in which the head presents, which may be the vertex (normal)–the easiest presentation to deliver; abnormal cephalic presentations include the brow, face, and posterior
presentations at the time of delivery. See Cephalic version, Cesarean section.
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