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.
Waldeyer's Ring of Lymphoid Tissue. The lymphoid tissue that surrounds the opening into the respiratory and digestive systems forms a ring. The lateral part of the ring is formed by the palatine tonsils and tubal tonsils (lymphoid tissue around the opening of the auditory tube in the lateral wall of the nasopharynx).he tonsils constitute a lymphoid tissue that lies beneath, and in contact with, the epithelium of the initial portion of the digestive tract. Depending on their location, tonsils in the mouth and pharynx are called palatine, pharyngeal, or lingual.