Sinus (anatomy) — Sinus is Latin for bay , pocket , curve , or bosom . In anatomy, the term is used in various contexts. A sinus is a sack or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue. In common usage,… … Wikipedia
sinus — 1. [TA] A channel for the passage of blood or lymph, without the coats of an ordinary vessel; e.g., blood passages in the gravid uterus or those in the cerebral meninges. 2. [TA] A cavity or … Medical dictionary
Lymph node — A Lymph node (] MedullaThere are two named structures in the medulla: * The medullary cords are cords of lymphatic tissue, and include plasma cells and B cells * The medullary sinuses (or sinusoids ) are vessel like spaces separating the… … Wikipedia
Pharyngeal tonsil — Location of the adenoid Latin tonsilla pharyngea MeSH … Wikipedia
Medullary cord — A medullary cord is a portion of the medulla of the lymph node which contains lymphatic tissue and project into the medullary sinus. B cells and plasma cells are the main cell types found in the medullary cords. External links Histology at BU… … Wikipedia
Medulla of lymph node — Schematic of lymph node showing lymph sinuses Latin medulla nodi lymphoidei The medulla of lymph node … Wikipedia
Haematopoiesis — Diagram showing the development of different blood cells from haematopoietic stem cell to mature cells Haematopoiesis (from Ancient Greek: αἷμα, blood ; ποιεῖν to make ) (or hematopoiesis in the United States; sometimes also haemopoiesis or… … Wikipedia
Immune system — A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and… … Wikipedia
Bone marrow — Simplified illustration of cells in bone marrow. Latin medulla ossium Code TA … Wikipedia
Cords of Billroth — The Cords of Billroth (also known as splenic cords or red pulp cords) are found in the red pulp of the spleen between the sinusoids, consisting of fibrils and connective tissue cells with a large population of monocytes and macrophages. These… … Wikipedia
