Search results
Results from the WOW.Com Content Network
The fetal circulation is composed of the placenta, umbilical blood vessels encapsulated by the umbilical cord, heart and systemic blood vessels. A major difference between the fetal circulation and postnatal circulation is that the lungs are not used during the fetal stage resulting in the presence of shunts to move oxygenated blood and ...
In placental mammals, the umbilical cord (also called the navel string, [1] birth cord or funiculus umbilicalis) is a conduit between the developing embryo or fetus and the placenta. During prenatal development , the umbilical cord is physiologically and genetically part of the fetus and (in humans) normally contains two arteries (the umbilical ...
The placenta connects the developing embryo to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. The umbilical cord is the connecting cord from the embryo or fetus to the placenta.
Professor Lisa Askie, senior author of the study, said: “Our findings highlight that particular care should be taken to keep premature babies warm when deferring umbilical cord clamping.
In human reproduction, a live birth occurs when a fetus exits the mother showing any definite sign of life such as voluntary movement, heartbeat, or pulsation of the umbilical cord, for however brief a time and regardless of whether the umbilical cord or placenta are intact. [1] After the fetus is expelled from the maternal body it is called a ...
In all types of LBWC, some of the fetus's organs develop outside of its body, [6] and the placenta will adhere to the affected body structure (cranium, thorax, or abdomen). [7] The umbilical cord is significantly shortened. As a consequence, the developing spine and limbs are contorted, leading to scoliosis and limb defects. [1]
The second stage ends when the infant is fully expelled. In the third stage, the delivery of the placenta. [16] The fourth stage of labour involves recovery, the uterus beginning to contract to pre-pregnancy state, delayed clamping of the umbilical cord, and monitoring of the neonatal tone and vitals. [17]
The umbilical arteries are actually the anterior division of the internal iliac arteries, and retain part of this function after birth. [3] The umbilical arteries are one of two arteries in the human body, that carry deoxygenated blood, the other being the pulmonary arteries. The pressure inside the umbilical artery is approximately 50 mmHg. [4]