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TEAS Cardiovascular System

Terms in this set (28)

What are the three layers of the walls of blood vessels?
Tunica intima, Tunica Media and Tunica Adventitia
Elastic Arteries
stretch when blood is forced out of the heart, and recoil under low pressure
Blood
composed of water, solubles and other elements in a fluid connective tissue
Muscular arteries
regulate blood flow by vasoconstriction/vasodilation
Arterioles
primary vessels involved in vasoconstriction/vasodilation ; control blood flow to capillaries
Venules
empties blood into larger veins
Veins
carries blood back to the heart
Artieries
transports blood AWAY from the heart
Capillary beds
diffusion sites for exchanges between blood and interstitial fluid
What is the blood composed of?
red blood cells, white blood cells, platelets, plasma
Red blood cells
transport oxygen to cells
White blood cells
defend the body against infection and remove various wastes
What are some white blood cells?
Lymphocytes, neutrophil, monocytes, eosinophils, and basophils
Platelets
fragment of stem cells and serve an important function in blood clotting
How many chambers does the heart have?
four; two atria and two ventricles
Valves
keep blood moving in a single direction and prevent any backwash into the chambers
Atrial contraction
fills the ventricles
Ventricular contraction
empties out ventricles
Coronary circulation
flow of blood to and from the tissues of the heart
Blood enters the _____ _____ supplying major arteries, enter the heart with _______ ______ .
coronary veins; oxygenated blood
The deoxygenated blood returns to the right atrium through _____ _____ which empty into the ______ _______
cardiac veins; coronary sinus
Systemic circulation
Flow of blood to the entire body with exception of coronary/pulmonary circulation
Blood exists the left ventricle through the aorta which branches...
caratoid arteries, common iliac arteries, subclavian arteries, renal arteries
Bloos returns to the heart through
jugular vein, common ililac vein, subclavian vein, renal veins
Portal circulation
The flow of blood from the digestive system to the liver and then to the heart
Renal circulation
flow of blood between the heart and kidney
Arterial blood pressure
Transporting oxygen-poor blood into the lungs and oxygen rich blood to the body tissues.
Arteries
branch into smaller arterioles which contract and expand based on signals from the body
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