Cardiovascular Structures Chapter 10
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33 terms
Terms | Definitions |
|---|---|
heart | muscular cone shaped organ, size of a fist, R & L atrium and R & L ventricle |
tricuspid valve | located between the R atrium and R ventricle |
mitral valve | located between the L atrium and L ventricle |
semilunar valves | pulmonady and aortic valves, located between the R ventricle and the pulmonary artery and between the L ventricle and the aorta |
pericardium | two layer sac consisting of an external fibrous and an internal serous layer. |
three layers of the heart | epicardium, myocardium, endocardium |
epicardium | covers the heart |
myocardium | middle, thick muscular layer |
endocardium | inner lining of the heart |
blood vessels | tubelike structures that carry blood through the body |
arteries | blood vessels that carry blood AWAY from the heart, carry OXYGEN and other nutrients from the heart to the body cells, |
Pulmonary artery | carries CARBON DIOXIDE and other waste from the heart to the lungs |
arterioles | smalles arteries |
aorta | largest artery in the body, starts at the L ventricle and descending through the thorax and abdomen |
veins | blood vessles that carry blood BACK to the heart, carry blood containing carbon dioxide and other waste |
pulmonary veins | carry OXYGENATED blood from the lungs to the heart |
venules | smallest veins |
venae cavae | largest veins in the body |
inferior vena cava | carries blood to the heart from the body parts below the diaphragm, |
super vena cava | returns the blood to the heart from the upper part of the body |
capillaries | microscopic blood vessels that connect arterioles with venules. |
blood | composed of plasma and formed elements |
plasma | clear, straw-colored, liquid portion of blood in which cells are suspended. 90% water and 55% of the total blood volume |
erythrocytes | RBC'S carry OXYGEN, develops in bone marrow |
leukocytes | WBC'S, combat infection and respond to inflammation... |
five types of WBC'S | Naughty Little Monkeys Eat Bananas Neutrophil, Lymphocyte, Monocyte, Eosinophil, Basophil |
platelets (thrombocytes) | one of the formed elements in the blood, aids in clotting process |
serum | clear, watery fluid portion of the blood, remains after a clot has formed..no clotting factors |
lymph | transparent colorless tissue fluid that |
lymphatic vessels | similar to veins, transport lymph from body tissues to the chest, where it enters the cardiovascular system |
lymph nodes | small, spherical bodies composes of lymphoid tissue |
spleen | located L side of the abdominal cavity, between the stomach and the diamphragm. Largest lymphatic organ in the body..Stores blood and destroys worn out red blood cells |
thymus gland | one of the primary lymphatic organs, plays role in development of immune system, around puberty, thymus gland atrophies, turns into connective tissue |
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