The key to a healthy vegetarian diet is variety. Just as your parents should be concerned if you only eat. hamburgers, they should also worry if you only eat potato. chips and salad. A healthy and varied vegetarian diet includes vegetables, fruits, plenty of leafy greens, whole grain products, nuts, seeds, and legumes. Some vegetarians choose to eat dairy. products and/or eggs, while vegans do not eat these foods. Teenage vegetarians have nutritional requirements that. are the same as other teens.
During prenatal development, the umbilical cord is physiologically and genetically part of the fetus and, (in humans), normally contains two arteries (the umbilical arteries) and one vein (the umbilical vein), buried within Wharton's jelly.
Circulation to the placenta then ceasesâthe arteries close first to prevent blood leaving your babyâs body. The umbilical vein continues to provide oxygenated blood to your newborn for an average of 15 minutes (unless it is clamped and cut sooner). The umbilical cord will pulse until the process is complete.