Cardiovascular Flashcards
name the series of vessels
Heart, Arteries, Arterioles, Capillary bed, Venules, Veins
Base of the heart
top part with great veins
Apex of the heart
Pointy part
Sternocostal surface of the heart
anterior part of the heart
diaphragmatic surface of the heart
postero-inferior surface.
Pulmonary surface of the heart
left side of the heart
right border of the heart
right side of heart
coronary groove of heart
seperates the atriums from the ventricles. Fat filled
anterior and posterior interventricular grooves
fat filled and seperates the ventricles
Endocardium
simple squamous epithelium termed endothelium. most inner lining
myocardium
middle layer full of cardiac muscle tissue.
epicardium
serous membrane , outside layer, has two different layers,
interatrial septum
seperates the atriums
interventricular septum
seperates the ventricles
right atrium of the heart
pumps into right ventricles, recieves deoxygenated blood from superior/ inferior vena cava. This is called sinus venarum cavarum.
Right auricle of the heart
right blind spot
opening of the superior vena cava
blood from the head neck superior limbs and thorax
opening of the inferior vena cava
blood from abdomen, pelvis, and inferior limbs
opening of the coronary sinus
next to opening of inferior vena cava. returns blood from itself
fossa ovalis/ foramen ovale of the heart
interatrial septum pathway
intervenous tubercle
endocardial ridge between the openings of the superior and inferior venae cavae
pectinate muscles
ridges formed by fasciculi of atrial myocardium located on the inner surfaces of the left and right atria
right ventricle of the heart
pumps to the lungs through pulmonary trunk
right atrioventricular/ tricuspid valve
has anterior, posterior, septal cusps
chordae tendineae
fibrous cords that attach to papillary muscles and leaflets
papillary muslces
anchor left and right atrioventricular valves
trabeculae carneae
the muscular bundles lining the ventricles
trabecula septomarginalis
only in the RA helps with impulse
conus arteriosus/infundibulum of the heart
outflow of right ventricle leading into pulmonary trunk
valve of the pulmonary trunk/ pulmonary valve
has anterior, left, right, semilunar valvulae
left atrium of the heart
receives blood from pulmonary veins.
left auricle of the heart
blind ended portion .
openings of the pulmonary veins
4 openings that lead into the left atrium
left ventricle of the heart
receives blood from the left atrium. pumps blood to body. Very thick tissue
left atrioventricular / mitral valve
has anterior, posterior cusps and commissural cusps
aortic valve
right, left, posterior semilunar valvulae
purkinje fibers
modified cardiac cells that transmit impulse
sinoatrial node
determines heart rate
atrioventricular node
slows down pulse for .12-.2 of a second
atrioventricular bundle
purkinje fibers after the atrioventricular node
left and right crura of the atrioventricular bundle
splittings of the atrioventricular bundle
pericardium
serous membrane that forms a closed cavity around the heart
visceral layer of the serous pericardium
layer closest to heart, synonymous with epicardium
parietal layer of the serous pericardium
outer layer of pericardium
pericardial cavity
space in between the two layers
name the 5 major components of the heart
heart, arteries, veins,capillaries, blood
6 functions of the cardiovascular system
o2/co2 exchange, nutrient/wast exchange, hormone transport, acid base balance, thermoregulation, body defense
hepatic portal system
modifies nutrients, detoxifies
hypothalamohypophysial portal system
ensures the hormones released from the hypothalamus have a direct shot at the anterior pituatary gland without getting diluted.
name the different leucocytes
lymphocyte 30%, monocyte 5%, eosinophil 3%, basophil 1%, neutrophil 60%
how many hemoglobins per RBC?
over 280 million
average adult has how much blood?
5 liters
blood contents
55 % plasma ( fluid)
45 % formed elements
name the different plasma proteins
albumins- osmotic pressure, globulins- immuno proteins, fibrinigen-for blood clotting
Erythrocytes
ABOUT 5 MILLION PER CUBIC MILLIMETER ( 5 BILLION / MILLILITER, only live for about 3 months then get phagocytized by cells in the liver , spleen, and bone marrow.
how many leucocytes per cubic millimeter of blood?
7000
leucocytes are divided into granulocytes and agranulocytes
granulocytes- Basophils, Eosinophils, neutrophils ( G-BEN)
agranulocytes- Monocytes, lymphocytes ( ALM)
Thrombocytes
fragments of megakaryocytes and are for the clotting cascade
circulatory shock
a drop in blood pressure
hypovolemic shock
result of blood loss
neurogenic shock
extreme emotional disturbance
endotoxic shock
paralysis of precapillary sphincters
cardiogenic shock
reduction of the cardiac output
what is an electrocardiograph
instrument that measures the electrical activity of the heart. The graph itself is called an electrocardiogram
heart block
an impairment of the normal impulse transmission within the heart
first degree blcok
prolongation of the A-V conduction time
second degree block
some but not all impulses reach the ventricles
complete (third degree) A-V block
no atrial impulses reach the ventricles
systolic atrial pressure should be
120 mmHG
diastolic atrial pressure should be
80 mmHG