PBS Lesson 4.1 Key Terms
Terms in this set (15)
The large arterial trunk that carries blood from the heart to be distributed by branch arteries through the body.
The semilunar valve separating the aorta from the left ventricle that prevents blood from flowing back into the left ventricle.
Any of the tubular branching muscular and elastic-walled vessels that carry blood away from the heart.
An anatomical cavity or passage; especially a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles.
The transport system of the body responsible for carrying oxygen and nutrients to the body and carrying away carbon dioxide and other wastes; composed of the heart, blood vessels, and blood.
The smallest structural unit of living matter capable of functioning independently.
Inferior Vena Cava
A vein that is the largest vein in the human body and returns blood to the right atrium of the heart from bodily parts below the diaphragm.
A valve in the heart that guards the opening between the left atrium and the left ventricle; prevents the blood in the ventricle from returning to the atrium. Alternative name is bicuspid valve.
The passage of venous blood from the right atrium of the heart through the right ventricle and pulmonary arteries to the lungs where it is oxygenated and its return via the pulmonary veins to enter the left atrium and participate in systemic circulation.
Superior Vena Cava
A vein that is the second largest vein in the human body and returns blood to the right atrium of the heart from the upper half of the body.
The branch of the circulatory system that supplies all body organs and then returns oxygen-poor blood to the right atrium.
An integrated group of cells with a common function, structure, or both.
A valve that is situated at the opening of the right atrium of the heart into the right ventricle and that resembles the mitral valve in structure but consists of three triangular membranous flaps.
A body structure that temporarily closes a passage or orifice, or permits movement of fluid in only one direction.
A vessel that returns blood to the heart.
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