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Cephalic presentation. In obstetrics, a cephalic presentation or head presentation or head-first presentation is a situation at childbirth where the fetus is in a longitudinal lie and the head enters the pelvis first; the most common form of cephalic presentation is the vertex presentation, where the occiput is the leading part (the part that ...
e. Human embryonic development or human embryogenesis is the development and formation of the human embryo. It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the human body entails growth from a one-celled ...
Pediatrics. Small for gestational age ( SGA) newborns are those who are smaller in size than normal for the gestational age. SGA is most commonly defined as a weight below the 10th percentile for the gestational age. [ 1 ] SGA predicts susceptibility to hypoglycemia, hypothermia, and polycythemia. [ 2 ] By definition, at least 10% of all ...
Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
Tritrichomonas foetus is a species of single-celled flagellated parasites that is known to be a pathogen of the bovine reproductive tract as well as the intestinal tract of cats. In cattle, the organism is transmitted to the female vagina and uterus from the foreskin of the bull where the parasite is known to reside.
Choroid plexus cysts ( CPCs) are cysts that occur within choroid plexus of the brain. They are the most common type of intraventricular cyst, [ 1] occurring in 1% of all pregnancies. [ 2] It is believed that many adults have one or more tiny CPCs. [ 3] The fetal brain may create these cysts as a normal part of development.
A nuchal cord is when the umbilical cord becomes wrapped around the fetus 's neck. [ 1] Symptoms present in the baby shortly after birth from a prior nuchal cord may include duskiness of face, facial petechia, and bleeding in the whites of the eye. [ 1] Complications can include meconium, respiratory distress, anemia, and stillbirth. [ 1]
Human reproduction is sexual reproduction that results in human fertilization to produce a human offspring. It typically involves sexual intercourse between a sexually mature human male and female. [ 1] During sexual intercourse, the interaction between the male and female reproductive systems results in fertilization of the ovum by the sperm ...