Cardio/Immuno/Blood Flashcards
muscular cone-shaped organ the size of a fist, located behind the sternum (breastbone) and between the lungs. The pumping action of the heart circulates blood throughout the body. The heart consists of two smaller upper chambers, the right atrium and the left atrium (pl. atria), and two larger lower chambers, the right ventricle and the left ventricle (pl. ventricles). The right atrium receives blood returning from the body through the veins and contracts to fill the right ventricle, which then pumps blood to the lungs. The left atrium receives blood from the lungs and contracts to fill the left ventricle, which then contracts to pump blood from the heart through the arteries to body tissues. The atrial septum separates the atria and the ventricular septum separates the ventricles
heart
consist of the tricuspid and mitral valves, which lie between the right atrium and the right ventricle and the left atrium and left ventricle, respectively. Valves of the heart keep blood flowing in one direction.
atrioventricular valves
pulmonary and aortic valves located between the right ventricle and the pulmonary artery and between the left ventricle and the aorta, respectively.
semilunar valves
two-layer sac surrounding the heart, consisting of an external fibrous and an internal serous layer. The internal serous layer is then divided into two parts: the outer layer, called the parietal pericardium, and the inner layer, called the epicardium. Between these is the pericardial space, which contains fluid produced by the serous layer that facilitates movement of the heart.
pericardium
outer lining covering the heart; also part of the pericardium (see above)
epicardium
middle, thick, muscular layer of the heart
myocardium
inner lining of heart
endocardium
tubelike structures that carry blood through body
blood vessels
blood vessels that carry blood away from the heart. All arteries, with the exception of the pulmonary artery, carry oxygen and other nutrients from the heart to the body cells. The pulmonary artery, in contrast, carries carbon dioxide and other waste products from the heart to the lungs.
arteries
smallest arteries
arterioles
largest artery in the body, which originates at the left ventricle, briefly ascends as the arch of the aorta, then descends through the thorax and abdomen
aorta
blood vessels that carry blood back to the heart. All veins, with the exception of the pulmonary veins, carry blood containing carbon dioxide and other waste products. The pulmonary veins carry oxygenated blood from the lungs to the heart.
veins
smallest veins
venules
largest veins in the body. The inferior vena cava carries blood to the heart from body parts below the diaphragm, and the superior vena cava returns the blood to the heart from the upper part of the body.
venae cavae
microscopic blood vessels that connect arterioles with venules. Materials are passed between the blood and tissue through the capillary walls.
capillaries
fluid circulated through the heart, arteries, capillaries, and veins; composed of plasma and formed elements, such as erythrocytes, leukocytes, and thrombocytes (platelets)
blood
clear, straw-colored, liquid portion of blood in which cells are suspended. Plasma is approximately 90% water. The other 10% is composed of solutes (dissolved substances), which include proteins, electrolytes, and vitamins. Plasma comprises approximately 55% of the total blood volume.
plasma
clear, watery fluid portion of the blood that remains after a clot has formed
serum
production of new blood cells takes place in bone marrow, the spongy tissue inside some bones
cells (formed elements)
red blood cells that carry oxygen
erythrocytes
white blood cells that combat infection and respond to inflammation
leukocytes
one of the formed elements in the blood that is responsible for aiding in the clotting process
thrombocytes
transparent, colorless, tissue fluid; contains lymphocytes and monocytes and flows in a one-way direction toward the heart
lymph
transport lymph from body tissues into the right and left subclavian veins, which then empty into the superior vena cava. The lymphatic vessels begin as capillaries spread throughout the body then merge into larger tubes that eventually become ducts in the chest. They provide a one-way flow for lymph, which enters through veins into the circulatory system.
lymphatic vessels
small, spherical bodies composed of lymphoid tissue. They may be singular or grouped together along the path of the lymph vessels. The nodes filter lymph to keep substances such as bacteria and other foreign agents from entering the blood. They also contain lymphocytes.
lymph nodes
located in the left side of the abdominal cavity between the stomach and the diaphragm. In adulthood, the spleen is the largest lymphatic organ in the body. Blood, rather than lymph, flows through the spleen. Blood is cleansed of microorganisms in the spleen. The spleen stores blood and destroys worn out red blood cells.
spleen
one of the primary lymphatic organs, it is located anterior to the ascending aorta and posterior to the sternum between the lungs. It plays an important role in the development of the body’s immune system, particularly from infancy to puberty. Around puberty the thymus gland shrinks so that most of the gland is connective tissue.
thymus gland
angi/o
vessels/blood vessel
aort/o
aorta
arteri/o
artery
atri/o
atrium
cardi/o
heart
cyt/o
cell
hem/o
blood
hemat/o
blood
lymph/o
lymph/lymph tissue
lymphaden/o
lymph node
my/o
muscle
myel/o
bone marrow
phleb/o
veins
plasm/o
plasm
splen/o
spleen
thym/o
thymus gland
valvul/o
valve
ven/o
veins
ventricul/o
ventricle
ather/o
yellowish, fatty plaque
ech/o
sound
electr/o
electricity/electrical activity
embol/o
plug
erythr/o
red
immun/o
immune system
isch/o
deficiency/blockage
leuk/o
white
thromb/o
blood clot
brady-
slow
endo- / intra-
within
pan
all/ total
peri
surrounding (outer)
poly-
many
tachy-
fast/rapid
-apheresis
removal
-ar
pertaining to
-centesis
surgical puncture to aspirate fluid (with needle)
-ectomy
surgical removal
-emia
in the blood
-genic
producing, originating, causing
-gram
the record, radiographic image
-graphy
process of recording radiographic imaging
-ia
diseased of abnormal state, condition of
-ic
pertaining to
-ism
state of
-itis
inflammation of the
-logist
one who studies and treats
-lysis
loosening, dissolution, separating
-megaly
enlargement
-oma
tumor/swelling
-osis
abnormal condition
-ous
pertaining to
-pathy
disease
-penia
abnormal reduction in number
-plasty
surgical repair
-rrhage
excessive flow
-rrhaphy
suturing/ repairing
-sclerosis
hardening
-scopy
visual exam
-stasis
control/ stop/standing
-stenosis
constriction or narrowing
-us
no meaning
tumor composed of blood vessels
angioma
narrowing of a blood vessel
angiostenosis
narrowing, pertaining to aorta (narrowing of the aortic valve)
aortic stenosis
hardening of the arteries
arteriosclerosis
hardening of fatty plaque (deposited on the arterial wall)
atherosclerosis
condition of slow heart rate
bradycardia
enlargement of heart
cardiomegaly
disease of the heart muscle
cardiomyopathy
inflammation of the inner lining of the heart
endocarditis
deficiency in blood flow caused by a constriction or obstruction of a blood vessel
ischemia
inflammation of the muscle of the heart
myocarditis
inflammation of the sac surrounding the heart
pericarditis
inflammation of a vein
phlebitis
inflammation of many (sits in the) arteries
polyarteritis
condition of rapid heart beat
tachycardia
inflammation of a vein associated with a blood clot
thrombophlebitis
inflammation of a vein associated with a blood clot
valvulitis
surgical repair of a blood vessel
angioplasty
excision of a plug (embolus or clot, usually with a balloon catheter, inflating the balloon beyond the clot, then pulling the balloon back to the incision and bringing the plug with it)
embolectomy
excision within the artery (excision of plaque from the arterial wall)
endarterectomy
surgical puncture to aspirate fluid from the sac surrounding the heart (usually to relieve cardiac tamponade and/or for diagnostic investigation)
pericardiocentesis
excision of a vein
phlebectomy