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Biology

Horizontales
Large vein carrying deoxygenated blood into the heart.
Odorless gas otherwise known as CO2.
Small body of specialized muscle fibers, located in the right atrium of the heart, whose activity is responsible for initiating the heartbeat.
Oxygen has been added.
Main artery of the body, supplying oxygenated blood to the circulatory system.
Each of the pair of organs situated within the rib cage
Oxygen has been removed.
A common condition in which the long-term force of the blood against your artery walls is high enough that it may eventually cause health problems, such as heart disease.
Verticales
Small body of specialized muscle fibers, located in the right atrium of the heart, whose activity is responsible for initiating the heartbeat.
A type of chest pain caused by reduced blood flow to the heart.
Flap-like structures present in heart that allow blood to flow in one direction.
Any of the fine branching blood vessels that form a network between the arterioles and venules.
Each of the two upper cavities of the heart from which blood is passed to the ventricles.
Any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.
A hollow part or cavity in the heart.
Any of the muscular-walled tubes forming part of the circulation system by which blood is conveyed from the heart to all parts of the body.