It is somewhat flattened, considerably narrower than the gastric surface, and is in relation with the upper part of the anterior surface of the left kidney and occasionally with the left adrenal gland. Like the thymus, the spleen possesses only efferent lymphatic vessels. The spleen is part of the lymphatic system. Both the short gastric arteries and the splenic artery supply it with blood. The germinal centers are supplied by arterioles called penicilliary radicles.
It depends on how well your baby is sleeping at night. Some babies confuse their days and nights â sleeping more during the day than at night. One way to set your baby straight is to limit daytime naps â especially those in the late afternoon â to no more than three or four hours each. If your baby is napping for too long at the end of the day, it can make it harder for him or her to fall asleep at bedtime.
Between the ages of 1 and 2, most kids need about 12-14 hours of sleep a day, including one or two daytime naps. At around 18 months, or sometimes sooner, most toddlers condense their two naps into one afternoon nap. If you find that your toddler fights the morning nap, he or she is probably ready for just an afternoon nap. Your 1- to 2-year-old should still sleep in a safe, secure crib. Before a child's first birthday, blankets are not recommended because of the possible risk of sudden infant death (SIDS) syndrome. But at this age, it's OK to put a light blanket in your child's crib.