Lesson 12.1 Crossword


Across

1.two masses of lymphatic tissue that lie in the back of the mouth, on the left and right sides; the largest and most commonly infected tonsils
6.lymphatic tissue that lies at the back of the nasopharynx, the part of the throat above the palate, and opens into the nasal cavity; commonly called the adenoid
8.tissue flaps that act as one-way valves inside the lymphatic vessels
9.two masses of lymphatic tissue that lie on either side of the base of the tongue
10.lymphocytes that complete their maturation in the thymus before they move out to the blood and the rest of the body; also called T cells
11.vessels that carry lymph

Down

2.the largest lymphatic organ in the body, located in the abdomen below the diaphragm; filters blood and activates an immune response if necessary
3.lymphocytes that mature in the bone marrow before moving out to the blood and the rest of the body; also called B cells
4.cells that phagocytize (surround and destroy) foreign cells, such as bacteria and viruses
5.small, bean-shaped structures found along the lymphatic vessels throughout the body
7.disease-causing agents

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