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Anterior Vena Cava
carries oxygen poor blood from upper part of the body into the right atrium
Antibody
a protein produced by white blood cells that destroys or inactivates an antigen that has entered the body
Antigen
substance capable of stimulating the release of antibodies
Aorta
The largest artery in the body; receives o2-blood from the left ventricle.
Arterial Duct
fetal artery connecting trunk to aorta
Atrioventricular Valve (AV)
largest valves made of connective tissue to allow blood to pass along ventricles to pump out of the heart
Autonomic Nervous System
Subdivision of the peripheral nervous system that regulates INVOLUNTARY functions
Atrioventricular (AV) Node
1/2 pieces of nodal tissue, specialized heart muscle located in the septal wall of the right atrium; receives impulses from the sinoatrial node and transmits them to the atrioventricular bundle
Blood Pressure
Force that blood exerts on blood vessel walls
Blood Velocity
speed of blood flow
Capillary-tissue fluid exchange
Where fluids, gasses, nutrients and wastes are exchanged between the blood and body tissues
Carotid artery
major artery in neck supplying blood to brain, neck and face
chordae tendinae
thing, string like tissues connecting heart valves to heart muscles to keep valves in place
coronary arteries and veins
supply and drain the heart of blood
diastolic pressure
pressure in arteries when heart rests between beats
fetal circulation
the system of blood vessels and structures through which blood moves in a fetus
hepatic portal vein
the vein that collects blood from the GI tract and conducts it to the liver
Hepatic Vein
the vein that collects blood from the liver and returns it to the heart
hypertension
high blood pressure
hypotension
low blood pressure
iliac arteries and veins
transports blood to and from the leg & pelvic organs
jugular vein
Vein that carries blood from the head to the superior vena cava
left atrium
left upper chamber, receives blood from the lungs
left ventricle
lower left chamber, receives oxygen-rich blood from the left atrium and pumps into the aorta
lymph capillaries
microscopic vessels that collect excess fluid from tissues to the lymph vessels
lymphatic nodes
filters lymph and fights infection by housing immune cells
lymphatic system
Composed of a network of vessels, ducts, nodes, and organs. Provides defense against infection.
lymphatic veins
Vessels of lymph system throughout body, thin walled, valves
mesenteric artery
major artery and the intestinal blood supplier
oval opening
the passage between the right and left atria of the heart, bypasses lungs delivering most of the oxygenated blood directly to body
plasma
Liquid part of blood carrying cells, nutrients and waste
platelets
blood clotting to ensure bleeding stops
posterior vena cava
collects blood from lower part of body to return to heart
pulmonary arteries
carry deoxygenated blood out of the right ventricle and into the lungs
pulmonary circulation
flow of blood from the heart to the lungs and back to the heart
pulmonary trunk
large artery splitting into the pulmonary arteries, carrying blood from r. ventricle to the lungs
pulmonary veins
Deliver oxygen rich blood from the lungs to the left atrium
purkinje fibers
specialized fibers aiding in spreading electrical impulses to contract ventricles
red blood cells
Blood cells that carry oxygen from the lungs to the body cells.
renal artery
blood vessel that carries blood to the kidney
renal vein
blood vessel that carries blood away from the kidney and toward the heart
right atrium
the right upper chamber of the heart that receives blood
right ventricle
lower right chamber or heart recieving deoxygenated blood to the lungs
sinoatrial node
heart's natural pacemaker, generates electrical impulses to create heartbeats
semi lunar valve
A valve in the heart linking the ventricles to the aorta and pulmonary artery
septum
Divides the right and left chambers of the heart
subclavian arteries and veins
blood vessels carrying blood to and from arms, shoulder and head
systemic circulation
circulatory system carrying oxygenated blood from heart to body, returns deoxygenated blood to the heart
systolic pressure
the pressure when the heart contracts
umbilical artery
fetal blood vessel carrying deoxygenated blood from fetus to the placenta
valve
struncture in heart/veins preventing blood from turning
veins
carries deoxygenated blood to the heart
venous duct
vessel in fetal circulation directing blood from umbilical vein to inferior vena cava
white blood cells
cells fighting infection in blood and immune system