Breastbone
41rib — rib1 ribber, n. ribless, adj. riblike, adj. /rib/, n., v., ribbed, ribbing. n. 1. one of a series of curved bones that are articulated with the vertebrae and occur in pairs, 12 in humans, on each side of the vertebrate body, certain pairs being… …
42rickets — /rik its/, n. Pathol. a disease of childhood, characterized by softening of the bones as a result of inadequate intake of vitamin D and insufficient exposure to sunlight, also associated with impaired calcium and phosphorus metabolism. [1635 45;… …
43thymus — /thuy meuhs/, n., pl. thymuses, thymi / muy/. Anat. a ductless, butterfly shaped gland lying at the base of the neck, formed mostly of lymphatic tissue and aiding in the production of T cells of the immune system: after puberty, the lymphatic… …
44thoracic cavity — or chest cavity Second largest hollow space of the body, enclosed by the ribs, vertebral column, and breastbone and separated from the abdominal cavity by the diaphragm. It contains the lungs and bronchi, part of the esophagus and trachea, and… …
45cardiovascular disease — Introduction any of the diseases, whether congenital or acquired, of the heart and blood vessels (blood vessel). Among the most important are atherosclerosis, rheumatic heart disease, and vascular inflammation. Cardiovascular diseases are a …
46human cardiovascular system — ▪ anatomy Introduction organ system that conveys blood through vessels to and from all parts of the body, carrying nutrients and oxygen to tissues and removing carbon dioxide and other wastes. It is a closed tubular system in which the… …
47Clavicle — The bone extending from the breastbone (sternum) at the base of the front of the neck to the shoulder. * * * A doubly curved long bone that forms part of the shoulder girdle. Its medial end articulates with the manubrium sterni at the… …
48Sternum — Anatomic name for the breast bone, the long flat bone in the upper middle of the front of the chest. The sternum articulates (comes together) with the cartilages of the first seven ribs and with the clavicle (collar bone) on either side. The… …
49Xiphoid process — A pointed cartilage attached to the lower end of the breastbone or sternum, the smallest and lowest division of the sternum. Cartilaginous early in life, it may become ossified (bony) in adults. It is sometimes simply called the xiphoid. Also… …
50Management of atrial fibrillation — The main goals in the management of atrial fibrillation (AF) are to prevent temporary circulatory instability and to prevent stroke. Control of heart rate and rhythm are principally used to achieve the former, while anticoagulation may be… …
