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31 Cards in this Set
- Front
- Back
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Atrium
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upper chamber of the heart
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Capillary
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smallest blood vessels, one cell thick
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Myocardium
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muscle layer in the heart
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Vein
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vessel that carries blood back to the heart
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Ventricle
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lower chamber of the heart; pumps blood out
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Sinoatrial Node
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Pacemaker – tells atria to contract; spot on rt. atrium
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Atrioventricular Node
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tells ventricles to contract via Bundle of His, conduction and Purkinje fibers; bottom rt. atrium
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Purkinje Fibers
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stimulate ventricular contraction
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Bundle of His
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Connects AV Node to conduction fibers
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Conduction fibers
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sends contraction impulse through the septum
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Septum
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thick strip of muscle separating the ventricles
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Arteriole
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Smaller artery
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Venule
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Smaller vein
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AV valve
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flap between the atrium and ventricle; prevents backflow of blood
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Artery
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blood vessel with thick elastic and muscle layers; smaller lumen to maintain high pressure; designed to expand and contract while keeping shape; away from the heart
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Vein
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thin walls with only thin elastic and muscle layers; larger lumen with low pressure inside; largest have valves; towards the heart
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valves
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prevent back flow
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Plasma
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A straw–colored fluid in blood = 90% water and 10% dissolved gases, salts, nutrients, enzymes, hormones, waste products, plasma proteins, cholesterol, and other important compounds.
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Hemoglobin
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Protein in RBC that binds oxygen in the lungs and releases it in the capillaries.
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Platelets
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Cell fragments involved in blood clotting.
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Lymph
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fluid and components that has moved out of the blood through the walls of capillaries
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Atherosclerosis
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when fatty plaque builds up in artery walls; causes arteries to stiffen; Leading cause of heart disease
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Globulin
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Plasma protein; immune support and transport
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Albumin
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Plasma protein; osmotic pressure regulation and transport
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Fibrinogen
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Plasma protein for blood clotting
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Erythrocytes
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Transports oxygen; Gets color from iron in hemoglobin; Aka. Red blood cell
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Leukocytes
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Guards against infection, fights parasites, and attacks bacteria; aka. white blood cell
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Lymph vessel
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transports lymph to nodes for filtering then back to the blood
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Pulmonary |
Lung related |
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Cardiac |
Heart related |
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Semilunar valve |
prevents blood from flowing back into the ventricle |
