Unit 1 Cardiovascular system
p wave
-atrial depolarization -atrial systole
-contraction of skeletal muscles -valves -respiratory movements
... contribute to the movement of blood in the venous side of the vascular circuit
parasympathetic
...... simulation decreases heart rate by influencing the SA node
fibrinogen
....is the inactive form of a plasma protein that is involved in coagulation
is one in which blood flows through two capillary beds before being sent back tot he heart
a portal system...
contraction of the right ventricle
action that leads to closure of the right atrioventricular valve
directly related the pressure gradient but inversely related to the resistance
blood flow is...
-body pH -body temperature
blood helps to regulate....
-is influenced by the contractility of the myocardium -is the amount of blood that leaves the heart in one minute -increases with exercise while peripheral resistance decreases with exercise
cardiac output....
systemic circuit
circuit of the cardiovascular system that is responsible for sending blood to the kidneys, stomach, and pelvic region
decreasing/decreased
dilation of the arterioles is accomplished by.... sympathetic tone and results in a... peripheral resistance
aferload venous return inotropic agents
factors that influence stroke volume
aortic/vena cava
in the systemic circulation.....blood pressure is highest....pressure is lowest
increases
increased cardiac output....the blood pressure
liver and spleen
old erythrocytes are phagocytosed in the...
systemic veins
part of the circulatory system that holds the largest volume of blood
-control blood flow into the true capillaries -can constrict, causing blood to flow through metarterioles into the postcapillary venue -open when the tissue needs nutrients
pre capillary sphincters...
low and blood flows very slowly through pulmonary capillaries, maximizing gas exchange
pulmonary arteries are shorter and wider than systemic arteries. Thus, pulmonary circuit blood pressure is....
Platelets and leukocytes
the "Buffy" coat of the middle layer of a centrifuged blood sample is composed of...
visceral layer of the serous pericardium
the epicardium is another name for the...
vascular sperm
the first phase in hemostatis is...
hemopoiesis
the process of producing the formed elements (cells) of blood is called....
albumins
the smallest and most abundant plasma proteins are the...
cardiac muscle cell
type of muscle cell that exhibits a longer refractory period
R-R interval
used to calculate heart rate
QRS complex
ventricular depolarization
T wave
ventricular depolarization
an increase in after load
what causes a decrease in cardiac output
it is like a double pump, each working side by side with the other
which analogy fits the human heart?
