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.
Typical Schedule for 9 -12 Month Old. Babies at this age on average need 11 hours of sleep at night and 3 1/2 hours of sleep during the day. At nine months, babies should nap for about an hour and a half in the morning and about 1 1/2 to 2 hours in the afternoon. Most have given up that brief, third late-afternoon nap.n eighteen month old on average sleeps 11 1/4 hours at night and 2 1/4 hours during one midday or afternoon nap. At age two, sleep requirements drop to 11 hours at night and 2 hours during the day. Over the next year, that will drop to 10 1/2 hours at night and 1 1/2 hours during he day.