Pryma Circ Qcards Flashcards
define artery adn arterioles
carry blood away from heart
have thick elastic muscle fibers
define capillary
tiny vessels
one cell layer thick
gas exchnage happens
define veins and venules
take blood to heart from capillaries
thinner than arteriole walls
have valves that prevent backflow
(bc of lower blood pressure)
function of the cordae tendinae
-support valves and prevent them from inverting
Function of perjunkie fiber
take message from AV node to the ventricles and cause them to contract in the right direction
what are the valves between the atria and ventricals
atrioventricular valves (Tricuspid and bicuspid)
the name of the chamber of the heart that recives blood from the
a) body
b) lungs
a) right atrium
b) left atrium
heart chamber that pumps blood to the
a) lungs
b) body
a) right ventricle
b) left ventricle
Starting w VC, ending w aorta, name blood path
VC
R atrium
tricuspid valve
R ventricle
pulmonary semilunar valve
pulm trunk
pulm arteries
arteries
lungs
pulmonary veins
left atrium
bicuspid valve
left ventricle
aortic semilunar valve
aorta
what is
a) systole
b)diastole
a) contraction of heart muscle
b) relaxation of heart muscle
name of valves between ventricals and blood vessels
semilunar valve
name of vessels that provide O2 to heart tissue
coronary arteries
name of the vessels that carry blood from the intestines to the liver
hepatic portal vein
name of structure that divides into the right and left pulmonary arteries
pulmonary trunk
what is the role of the SA node in the heartbeat
sends out signals to make atria contract`
what is the role of the AV node in the heartbeat
receives signal from SA node and and sends out a signal to the perjunkie fibers, these fibers send signal to ventricles causing them to contract
difference between hypertension and hypotension
hyper: higher blood pressure than normal
hypo: lower blood pressure than normal
Name of blood vessel that carries blood from the body to r atrium
vena cava
Name of blood vessel that carries blood from the head to SVC
Subclavian
3 functions of the lymph system are
-transport excess tissue fluid back to cardiovascular system
-absorption of fat from intestine and transport to blood
-fighting infection by cleansing lymph and producing lymphocytes
how do these make fetal circulation different from adults
a) Oval opening
b) venus duct
c)arterial duct
d) umbilical arteries and veins
a) it allows blood to move from the r atrium to the l atrium by bypasssing the pulmonary circut
b) connects umbilical vein and IVC to being blood back to babys heart (attatches to liver but bypasses most of the liver)
c) connects to the pulmonary artery and aorta. much of the blood being pumped out of the heart will be dircted away from the lungs and into the aorta (bypass pulmonary circut)
d) vessels travel to and from placenta (gases nutrients and wastes are exchanged) umbilical arteries are grafted to the iliac arteries
what are 2 function of lymph nodes
produce and store lymphocytes
filter lymph of damaged cells and debris
list 2 characteristics of
a)pulmonary system
b) systemic system
a) - the path of blood from the heart thru the lungs
- includes: r atrium, r ventricle, pulmonary trunk, pulm arteries, arterioles of the lungs, pulm capillaries, pulm venules + veins,
b) -includes all blood vessels except the ones in the pulm system
- in systemic, veins carry deocygenated blood and arteries carry oxygenated blood
what structures and cells filter out foreign invaders from lymph
-Lymphocytes: produce antibodies
-lymph nodes: produce and store lymphocytes, filter lymph
describe capillary tissue exchange
when blood pressure is higher at the start (arterial end of capillary) the good stuff goes into tissues. but as pressure decreases ( venous end of capillary) the bad stuff goes into blood stream to be taken away
conditions tha facilitate change between of materials between capillaries and tissues
blood pressure
osmotic pressure
net pressure
(when BP is higher than OP then good stuff moves out)
(When Bp is lower than OP then bad stuff moves in)
