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Finally, the left and right brachiocephalic veins join to form the superior vena cava, which delivers deoxygenated blood to the right atrium of the heart. [2] The jugular vein has tributaries consisting of petrosal sinus , facial , lingual , pharylingual, the thyroid , and sometimes the occipital vein .
The anterior jugular vein varies considerably in size, bearing usually an inverse proportion to the external jugular. [1] Most frequently, there are two anterior jugulars, a right and left. [1] [4] However, there is sometimes only one. [1] A duplicate anterior jugular vein may be present on one side, which may cross over the midline.
The inferior vena cava is the larger of the two. The inferior vena cava is retroperitoneal and runs to the right and roughly parallel to the abdominal aorta along the spine. Deep, superficial, and perforator veins. The three main compartments of the venous system are the deep veins, the superficial veins, and the perforator veins. [15]
Blood vessels are the tubular structures of a circulatory system that transport blood throughout a vertebrate's body. [1] Blood vessels transport blood cells, nutrients, and oxygen to most of the tissues of a body.
In anatomy, the venae cavae (/ ˈ v iː n i ˈ k eɪ v i /; [1] sg.: vena cava / ˈ v iː n ə ˈ k eɪ v ə /; from Latin 'hollow veins') [2] are two large veins (great vessels) that return deoxygenated blood from the body into the heart. In humans they are the superior vena cava and the inferior vena cava, and both empty into the right atrium ...
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Elevation and depression are movements above and below the horizontal. The words derive from the Latin terms with similar meanings. [c] Elevation is movement in a superior direction. [19] For example, shrugging is an example of elevation of the scapula. [20] Depression is movement in an inferior direction, the opposite of elevation. [21]