medical terminology chapter 10
Card Set Information
medical terminology chapter 10
medical terminology respiratory therapy
chapter 10 - cardiovascular, immune, and lymphatic systems and blood NOT FINISHED YET
what is the heart
muscular, cone-shaped organ the size of a fist located behind the sternum
where is the tricuspid valve located
btwn rt atrium and rt ventricle
where is the mitral valve located
btwn the lt atrium and lt ventricle
where are the semilunar valves located
btwn the rt ventricle and pulmonary artery and btwn lt ventricle and aorta
what is the pericardium
2 layer sac of an external fibrous and an internal serous layer. serous secretes a fluid that facilitates movement of the heart and is called the epicardium
what are the 3 layers of the heart
epicardium, myocardium, and endocardium
which layer of the heart is the middle
which layer of the heart is the inner lining
which layer of the heart is the covering
what are blood vessels
tubelike structures that carry blood throughout the body
what are arteries
blood vessels that carry blood away from the heart
do arteries carry richly or poorly oxygenated blood?
richly (carries blood away from heart)
what are arterioles?
what is the aorta
the largest artery in body
what is the largest artery in the body?
where does the aorta originate?
at the left ventricle
where does the aorta descend to?
through the thorax and abdomen?
what are veins?
blood vessels that carry blood back to the heart
do veins carry richly or poorly oxygenated blood?
poorly (carries blood back to the heart)
what are venules?
what are the largest veins in the body called?
what are the 2 largest veins in the body called?
superior and inferior venae cavae
what vein carries blood to the heart from the body parts below the diaphragm?
inferior vena cava
what vein returns blood to the heart from the upper part of the body?
superior vena cava
what are capillaries
microscopic blood vessels that connect arterioles with venules
what is blood composed of?
plasma, erythrocytes, leukocytes, and thrombocytes
what is plasma
clear, straw-colored liquid portion of blood in which cells are suspended
what is the make-up of plasma?
90% H2O 10% proteins, electrolytes, nutrients, etc
what are erythrocytes?
red blood cells
what are leukocytes?
white blood cells
what are thrombocytes?
what is serum?
clear, watery fluid portion of blood that remains after a clot has formed
what is a lymph?
transparent, colorless, tissue fluid (when in lymphatic system), contains lymphocytes and monocytes
what are lymphatic vessels?
tubes that transport lymph
what are lymph nodes?
small spherical bodies that filter lymph to keep bacteria and waste from entering the blood
what is the spleen
largest lymphatic organ in the body, blood flows through it and is cleaned
what is the thymus gland
one of primary lymphatic organs, plays a major role in the development of the immune system from infancy to puberty and atrophies once puberty is hit
lymph, lymph, tissue
yellowish, fatty plaque
electricity, electrical activity
instrument used to record; record
abnormal reduction in number
acute coronary syndrome (ACS)
sudden symptoms of insufficient blood supply to the heart indicating unstable angina or acute myocardial infarction