NS&F cardio; keyterms Flashcards
The largest artery. It receives blood from the left ventricle and
branches to all parts of the body (root aort/o).
AORTA
The semilunar valve at the entrance to the aorta
AORTIC VALVE
The point of a cone-shaped structure (adjective, apical).
APEX
A vessel that carries blood away from the heart. All except the pulmonary
and umbilical arteries carry oxygenated blood (root arter, arteri/o).
ARTERY
A small artery
ARTERIOLE
A small mass in the lower septum of the right atrium that passes impulses from the sinoatrial (SA) node toward the ventricles
ATRIOVENTRICULAR NODE (AV NODE)
A band of fibers that transmits impulses from the atrioventricular
(AV) node to the top of the interventricular septum. It divides into
the right and left bundle branches, which descend along the two sides of the septum; the bundle of His.
AV BUNDLE
An entrance chamber, one of the two upper receiving chambers of
the heart (root atri/o)
ATRIUM
The valve between the left atrium and the left ventricle; the mitral
valve
BICUSPID VALVE
The force exerted by blood against the wall of a vessel
BLOOD PRESSURE
Branches of the AV bundle that divide to the right and left sides of
the interventricular septum
BUNDLE BRANCHES
A microscopic blood vessel through which materials are exchanged
between the blood and the tissues
CAPILLARY
The part of the circulatory system that consists of the heart and the
blood vessels
CARDIOVASCULAR SYSTEM
The relaxation phase of the heartbeat cycle
DIASTOLE
The thin membrane that lines the chambers of the heart and covers
the valves
ENDOCARDIUM
The thin outermost layer of the heart wall
EPICARDIUM
Any sound produced as the heart functions normally
FUNCTIONAL MURMUR
The muscular organ with four chambers that contracts rhythmically
to propel blood through vessels to all parts of the body (root cardi/o)
HEART
Sounds produced as the heart functions. The two loudest sounds are
produced by alternate closing of the valves and are designated S1 and S2.
HEART SOUNDS
The large inferior vein that brings blood back to the right atrium of
the heart from the lower part of the body
INFERIOR VENA CAVA
The valve between the left atrium and the left ventricle; the bicuspid
valve
MITRAL VALVE
The thick middle layer of the heart wall composed of cardiac muscle
MYOCARDIUM
The fibrous sac that surrounds the heart
PERICARDIUM
The vessel that carries blood from the right side of the heart to the
lungs
PULMONARY ARTERY
The system of vessels that carries blood from the right side of the
heart to the lungs to be oxygenated and then back to the left side of
the heart
PULMONARY CIRCUIT
The vessels that carry blood from the lungs to the left side of the
heart
PULMONARY VEINS
The semilunar valve at the entrance to the pulmonary artery
PULMONIC VALVE
The wave of increased pressure produced in the vessels each time the
ventricles contract
PULSE
The terminal fibers of the conducting system of the heart. They carry
impulses through the walls of the ventricles.
PURKINJE FIBERS
A wall dividing two cavities, such as the chambers of the heart
SEPTUM
A small mass in the upper part of the right atrium that initiates the
impulse for each heartbeat; the pacemaker
SINOATRIAL NODE (SA NODE)
The large superior vein that brings deoxygenated blood back to the
right atrium from the upper part of the body
SUPERIOR VENA CAVA
The system of vessels that carries oxygenated blood from the left side
of the heart to all tissues except the lungs and returns deoxygenated
blood to the right side of the heart
SYSTEMIC CIRCUIT
The contraction phase of the heartbeat cycle
SYSTOLE
The valve between the right atrium and the right ventricle
TRICUSPID VALVE
A structure that keeps fluid flowing in a forward direction (root
valv/o, valvul/o)
VALVE
A vessel that carries blood back to the heart. All except the pulmonary
and umbilical veins carry blood low in oxygen (root ven, phleb/o).
VEIN
A small cavity. One of the two lower pumping chambers of the heart
(root ventricul/o).
VENTRICLE
a small vein
VENULE
A tube or duct to transport fluid (root angi/o, vas/o, vascul/o)
VESSEL
The thin plasmalike fluid that drains from the tissues and is transported
in lymphatic vessels (root lymph/o)
LYMPH
A small mass of lymphoid tissue along the path of a lymphatic vessel
that filters lymph (root lymphaden/o)
LYMPH NODE
The system that drains fluid and proteins from the tissues and returns
them to the bloodstream. This system also aids in absorption of
fats from the digestive tract and participates in immunity.
LYMPHATIC SYSTEM
The lymphatic duct that drains fluid from the upper right side of the
body
RIGHT LYMPHATIC DUCT
A large reddish-brown organ in the upper left region of the abdomen.
It filters blood and destroys old red blood cells (root splen/o).
SPLEEN
The lymphatic duct that drains fluid from the upper left side of the
body and all of the lower portion of the body
THORACIC DUCT
A gland in the upper part of the chest beneath the sternum. It functions
in immunity (root thym/o).
THYMUS GLAND
Small masses of lymphoid tissue located in the region of the throat
TONSILS
