lymphoid tissue
71Spleen — An organ located in the upper left part of the abdomen near the stomach. The spleen produces lymphocytes; it is the largest lymphatic organ in the body. The spleen also filters the blood, serves as a major reservoir for blood and destroys blood… …
72Chemorepulsion — is the directional movement of a cell away from a substance. Of the two directional varieties of chemotaxis, chemoattraction has been studied to a much greater extent. Only recently have the key components of the chemorepulsive pathway been… …
73Thymus — An organ in which lymphocytes mature and multiply. It lies behind the breastbone. * * * [NA] A primary lymphoid organ, located in the superior mediastinum and lower part of the neck, that is necessary in early life for the normal development of… …
74Peyer's patches — are secondary lymphoid tissue, named after the 17th century Swiss anatomist Johann Conrad Peyer. They are aggregations of lymphoid tissue that are usually found in the lowest portion of the small intestine (ileum) in humans; as such, they… …
75MALT — Abbreviation for mucosa associated lymphoid tissue. * * * male, altered [animal]; mucosa associated lymphoid tissue; Munich Alcoholism Test * * * malt mȯlt n grain softened by steeping in water, allowed to germinate, and used esp. in brewing and …
76spleen — spleenish, adj. /spleen/, n. 1. a highly vascular, glandular, ductless organ, situated in humans at the cardiac end of the stomach, serving chiefly in the formation of mature lymphocytes, in the destruction of worn out red blood cells, and as a… …
77human development — ▪ biology Introduction the process of growth and change that takes place between birth and maturity. Human growth is far from being a simple and uniform process of becoming taller or larger. As a child (child development) gets bigger,… …
78bone marrow — marrow1 (def. 1). * * * or myeloid tissue Soft, gelatinous tissue that fills bone cavities. Red bone marrow contains stem cells, progenitor cells, percursor cells, and functional blood cells (see reticuloendothelial system). Lymphocytes mature in …
79Palatine tonsil — Infobox Anatomy Name = Palatine tonsil Latin = tonsilla palatina GraySubject = 243 GrayPage = 1138 Caption = Mouth (oral cavity). Caption2 = The Palatine tonsils with the soft palate, uvula, and tongue visible. System = Precursor = pharyngeal… …
80digestive system, human — Introduction the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… …
