Adenoids
Lingual tonsillitis is the medical term meaning inflammation of lymph tissue at the back of the tongue.
Isehemia is the medical term meaning holding back blood from tissue. Ischemia prevents tissue from getting enough oxygen.
Lymph nodes are not glands. They are swellings along the lymph vessels that carry tissue fluid back to the heart.
Lymphoid tissue includes the lymph nodes, spleen, thymus, bone marrow and "tonsils" which are located in the throat.The tonsils are lymphoid tissue which line the pharynx or throat.Nasopharyngeal indicates the area of the internal openings of the nose and mouth.Names and locations of tonsillar divisions: Adenoids = aka Pharyngeal tonsils or Luschka located at the nose.Tonsils = aka Palatine located at the oropharynx (back of the mouth).Tubal = located at the opening of the auditory tubes.Lingual = located at the tongue "root".Cerebral = located above the nasal openings.Nasal = located within the nasal cavity
Because the tissue fluid cannot get back to the blood.
Dorsal is the medical term meaning back.
Dorsum is a medical term meaning back. For example the dorsum of the hand is commonly known as the back of the hand.
Lymph is a fluid. It flows through the lymphatic vessels by one way valves which allows lymph move way through lymphatic system. Subclavian suction, and skeletal muscle pumps help to propel the lymph through the lymphatic vessels.
Posterior.
Dorsal
Posteroanterior means from back to front.
They carry lymph back to lymph nodes.