33 terms

Cardiovascular Structures Chapter 10

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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