Bones are rigid organs In biology and anatomy, an organ is a collection of tissues joined in structural unit to serve a common function that form part of the endoskeleton An endoskeleton is an internal support structure of an animal, composed of mineralized tissue. In three phyla and one subclass of animals, endoskeletons of various complexity are found: Chordata, Echinodermata, Porifera, and Coleoidea. An endoskeleton may function purely for support , but often serves as an attachment site for muscle and a of vertebrates Vertebrates are members of the subphylum Vertebrata, chordates with backbones or spinal columns. About 58,000 species of vertebrates have been described. Vertebrata is the largest subphylum of chordates, and contains many familiar groups of large land animals. Vertebrates comprise cyclostomes, bony fish, sharks and rays, amphibians, reptiles,. They function to move, support, and protect the various organs of the body, produce red Red blood cells are the most common type of blood cell and the vertebrate body's principal means of delivering oxygen (O2) to the body tissues via the blood flow (through the circulatory system), as well as removing the cellular waste product, carbon dioxide (CO2) from the tissues and conveying it on their trip back to the lungs or gills, where it and white blood cells White blood cells , or leukocytes (also spelled "leucocytes"), are cells of the immune system defending the body against both infectious disease and foreign materials. Five different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell and store minerals. Bone tissue is a type of dense connective tissue. Because bones come in a variety of shapes and have a complex internal and external structure they are lightweight, yet strong and hard, in addition to fulfilling their many other functions. One of the types of tissue that makes up bone is the mineralized osseous tissue Osseous tissue, or bone tissue, is the major structural and supportive connective tissue of the body. Osseous tissue forms the rigid part of the bone organs that make up the skeletal system, also called bone tissue, that gives it rigidity and a honeycomb-like three-dimensional internal structure. Other types of tissue found in bones include marrow Bone marrow is the flexible tissue found in the hollow interior of bones. In adults, marrow in large bones produces new blood cells. It constitutes 4% of total body weight, i.e. approximately 2.6 kg in adults, endosteum The endosteum is a thin layer of connective tissue which lines the surface of the bony tissue that forms the medullary cavity of long bones. This endosteal surface is usually resorbed during long periods of malnutrition resulting in less cortical thickness. The outer surface of a bone is lined by a thin layer of connective tissue that is very and periosteum Periosteum is a membrane that lines the outer surface of all bones, except at the joints of long bones. Endosteum lines the inner surface of all bones, nerves A nerve is an enclosed, cable-like bundle of peripheral axons . A nerve provides a common pathway for the electrochemical nerve impulses that are transmitted along each of the axons. Nerves are found only in the peripheral nervous system. In the central nervous system, the analogous structures are known as tracts. Neurons are sometimes called, blood vessels The blood vessels are the part of the circulatory system that transport blood throughout the body. There are three major types of blood vessels: the arteries, which carry the blood away from the heart, the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from and cartilage Cartilage is a stiff yet flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes and the intervertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle. There are 206 bones in the adult human body[1] and 270 in an infant.[2]
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Indiana Daily Student
This weekend, he will make his Funny Bone Bloomington Comedy Club debut with shows at 8 pm Thursday, Friday and Saturday as well as 10:30 pm Friday and ...
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the sphenoid bone anterior aspect
