HEART AND VASCULAR Flashcards
HEART SIZE IN WOMEN AND MEN
9OZ AND 10.9 OZ
The large veins and arteries leading directly to and away from
the heart are referred to as the
great vessels.
Collagen
—— anchor the AV valve flaps to
papillary muscles within the ventricles.
Collagen
fibers,chordae tendineae,
tough, inextensible, loose-fitting, fibroserous
sac that attaches to the great vessels and surrounds the heart.
pericardium
thickest layer of the heart, made up of
contractile cardiac muscle cells.
myocardium
thin layer of
endothelial tissue that forms the innermost layer of the heart
endocardium
in the
myocardium of both ventricles, causing them to contract almost
simultaneously.
Purkinje fibers
filling and emptying of the heart’s
chambers.
cardiac cycle
endures for approximately
two thirds of the cardiac cycle and systole is the remaining one
third
Diastole
the amount of blood pumped from the heart with each
contraction (SV from the left ventricle is usually 70 mL).
Stroke Volume
veins lie deep and medial to the
sternocleidomastoid muscle.
internal jugular veins
lie lateral to the sternocleidomastoid muscle and
above the clavicle
external jugular veins
determining the hemodynamics of the right side of the heart.
jugular venous pulse
reflects rise in atrial pressure that occurs with atrial
contraction
a wave
reflects right atrial relaxation and descent of the
atrial floor during ventricular systole
x descent
reflects right atrial filling, increased volume, and
increased atrial pressure
v wave
reflects right atrial emptying into the right ventricle
and decreased atrial pressure
y descent
May be seen with
weak heart muscles, an attempt
by the heart to increase CO.
Tachycardia
may occur with an
abnormality of the heart’s
conduction system
(arrhythmias) or during the
heart’s attempt to increase CO
by increasing the HR.
Palpitations