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Cardiovascular System
The system that circulates blood in the body, consisting of the heart, blood vessels, and blood.
Circulating Fluid
The substance that moves through the cardiovascular system, which is blood in humans.
Arteries
Blood vessels that carry blood away from the heart.
Veins
Blood vessels that carry blood back towards the heart.
Capillaries
Small blood vessels where gas and nutrient exchange occurs.
Atrium
Upper chamber of the heart that receives blood.
Ventricle
Lower chamber of the heart that pumps blood out to the body or lungs.
Hemoglobin
A protein in red blood cells that binds oxygen and transports it throughout the body.
Plasma
The liquid component of blood that makes up about 55% of its volume.
Buffy Coat
The layer of white blood cells and platelets in blood, comprising about 1% of blood volume.
Erythrocytes
Red blood cells that carry oxygen in the blood.
Leukocytes
White blood cells that are part of the immune system.
Myocardium
The middle layer of the heart, composed of cardiac muscle and responsible for the heart's contraction.
Sinoatrial Node (SA Node)
The pacemaker of the heart located in the right atrium that initiates the heartbeat.
Atrioventricular Node (AV Node)
The node that receives impulses from the SA node and transmits them to the ventricles.
Pulmonary Circuit
The part of the cardiovascular system that carries deoxygenated blood from the heart to the lungs.
Systemic Circuit
The part of the cardiovascular system that carries oxygenated blood from the heart to the rest of the body.
Coronary Circuit
The system of blood vessels that supply blood to the heart muscle itself.
Vena Cava
The largest vein in the body, carrying deoxygenated blood back to the heart.
Aorta
The largest artery in the body that carries oxygenated blood from the heart to the body.
Valves
Structures in the heart that prevent backflow of blood.
Septum
A wall dividing the right and left sides of the heart, preventing mixing of oxygenated and deoxygenated blood.
Blood Pressure
The force exerted by circulating blood upon the walls of blood vessels, typically measured in millimeters of mercury.
Bicuspid Valve (Mitral Valve)
The valve between the left atrium and left ventricle that prevents backflow.
Tricuspid Valve
The valve between the right atrium and right ventricle that prevents backflow.
Systole
The phase of the heartbeat when the heart contracts and pumps blood.
Diastole
The phase of the heartbeat when the heart relaxes and fills with blood.
Capillary Bed
A network of capillaries where gas and nutrient exchange occurs.
Portal System
A system of blood vessels that goes from veins to capillaries and then back to veins, such as the hepatic portal system.
Intercalated Discs
Specialized connections between cardiac muscle cells that allow for rapid transmission of electrical impulses.
Leukocytes and platelets
The buffy coat of the middle layer of a centrifuged blood sample is composed ofā¦
Mycocardium
The layer of the heart wall composed of cardiac muscle tissue is the..
The heart valves
Prevents backflow and permits the passage of blood in one direction.
F
T or F, The left ventricle has a wall that is typically 3 times thinner than the right ventricular wall.
55
plasma makes up about how much % of a centrifuged sample of whole blood?
Continuous
The most common type of capillaries
F
T or F, The contraction of skeletal muscles has no role in the movement of blood in the veins.
Elastic arteries, muscular arteries, arterioles, capillaries, venules, small and medium veins, large veins
correct order of blood vessels for the passage of blood from the heart.
Hepatic
Portal system
Note 
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