MAINE YEARS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN M A M A M A M A M A M A M A M A M A M A M A M A M A M A CARIBOU, ME 49 49 74 66 74 63 76 60 76 57 73 52 78 56 83 58 86 59 87 60 86 62 85 71 80 70 80 61 PORTLAND, ME 53 53 76 60 76 58 74 57 73 55 75 58 78 60 80 59 83 59 85 60 84 59 82 62 79 61 79 59.
A ring of lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n). Tonsil. Explain why the lymphatic system is a one-way system, whereas the blood vascular system is a two-way system. Blood vessels form a complete circuit from and to the heart.edulla. Lymph enters the subcapular sinus of the lymph node through the ________. Afferent lymphatic vessels. As lymph exits the hilum there are fewer of these types of vessels draining the node than feeding it.
Later this coelomic cavity divides into the pleural cavity and the pericardial cavity. The linings of these cavities are composed of a single layer of cells called mesothelium. A few epithelial cells are of mesodermal origin, e.g. endometrium of the uterus, vaginal epithelium, and mucosa of the bladder. Endothelium derived from mesoderm lines the blood and lymphatic vessels and the walls of the heart.