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Spongy tissue is a type of tissue found both in plants and animals.. In plants, it is part of the mesophyll, where it forms a layer next to the palisade cells in the leaf.The spongy mesophyll's function is to allow for the interchange of gases (CO 2) that are needed for photosynthesis.
Bone marrow is a center of a variety of immune activities: i) hematopoiesis, ii) osteogenesis, iii) immune responses, iv) distinction between self and non-self antigens, v) central immune regulatory function, vi) storage of memory cells, vii) immune surveillance of the central nervous system, viii) adaptation to energy crisis, ix) provision of ...
Jacob Spon (or Jacques; in English dictionaries given as James; 1647 – 25 December 1685) was a French doctor and archaeologist. He was a pioneer in the exploration of the monuments of Greece, and a scholar of international reputation in the developing " Republic of Letters ".
Neopetrosia is a genus of marine petrosiid sponges.It was first established by the American spongiologist Max Walker de Laubenfels in 1932. It contains these 27 species: [1] ...
The siliceous sponges form a major group of the phylum Porifera, consisting of classes Demospongiae and Hexactinellida.They are characterized by spicules made out of silicon dioxide, unlike calcareous sponges.
Connective tissue is one of the four primary types of animal tissue, a group of cells that are similar in structure, along with epithelial tissue, muscle tissue, and nervous tissue. [1]
Dense connective tissue, also called dense fibrous tissue, is a type of connective tissue with fibers as its main matrix element. [1] The fibers are mainly composed of type I collagen.
Primary bone cancer is a type of sarcoma, a cancer that originates in bone, muscle, fibrous tissue, blood vessels, fat tissue, as well as some other tissues. [2] Primary bone cancer can arise in any of the 206 bones in the body but is mostly seen to originate the arms and the legs. [3]