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cardiovascular system (hear conduction, SA (sinoatrial) node- the peace…
cardiovascular system
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- SA (sinoatrial) node- the peace maker: located in the wall of the atrium near the opening of the superior vena cana
2.AV (atrioventricular) node —located in the right atrium along the lower part of the interatrial septum
- AV bundle - septum of ventricles
- Purkinje fibers- located in ventricle
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red cells: it carries oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs
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plasma: transport nutrients, hormones, and proteins to the parts of the body that need it.
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B) A functional cardiovascular system is a vital for supplying oxygen and nutrients to tissue and removing waste from them
C) Deoxygenated blood is carried by the pulmonary circuit to the lungs, the systemic circuit sends oxygenated blood.
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capillaries- smallest of the blood vessels and sites of gas exchange between blood and tissue cells.
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Tunica media- middle, smooth muscle layer: controls diameter of the blood vessel.
Tunica externa- outmost, fibrous connective tissue
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Peripheral artery disease- arteries narrow and reduces blood flow to extremities.
symptoms - leg/arm pain
numbness and weakness
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Congenital heart disease- issue with heart structure function with present from birth symptoms- causes death
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