A&P Exam 2- Heart

how many pulmonary arteries empty into the right atrium of the heart

0

an increased amount of heparin in the blood might

slow the clotting process

if someone has a blood pressure of 110/70mm Hg, their pulse pressure would be

40 mm Hg.

a person with B blood has

Anti A antibodies

an obstruction in the inferior vena cava would hamper the return of blood from the

abdomen, pelvis and lower limbs

ventricular contraction begins at the

apex of the heart

vasoconstriction, cardiac output, cardiac rate affect

arterial blood pressure

the action potentials are slowed at the AV node to allow the

atria to complete their contraction

the P wave of an ECG represents

atrial depolarization

which of the following chemical substances, when released into the blood would cause blood pressure to decrease

atrial natriuretic hormone

in adults, red blood cells are made in one place, spend most of their lifespan in another, and most are finally destroyed in another place. Which choice lists these locations in correct chronological order:

bone marrow, blood vessels, spleen

the produce of the stroke volume times the heart rate is known as the

cardiac output

which of the following is mismatched

closing of calcium channels-plated phase

fibrinolysis is responsible for

clot dissolution

the chord tendon

connect the flaps of the AV valves to the papillary muscles

pre capillary sphincters

control the blood flow into the capillary beds

during exercise, arterioles to the skeletal muscles

dilate in response to increased muscle metabolites

the tricuspid valve is closed

during ejection

all blood vessels are lined with

endothelial cells

damage to tissue stimulates the activation of ____ blood clotting pathway

extrinsic

the velocity of blood flow inside a blood vessel is

faster in the center of the blood vessels

the final protein that forms a blood clot is

fibrin

what has all these features, has no pumping mechanism between capillary beds, allows the liber to detoxify substances entering the body through digestive track to the liver, begins and ends with capillary beds

hepatic portal system

Randolph suffers from severe hepatitis

his skin appeared to be jaundiced. the color change was do to: increased bilirubin in his circulatory system

increased vagal stimulation would cause the heart rate to

increase

during exercise all of the following occur exdpt

increased vasoconstriction of coronary arteries

which of the following would decrease the velocity of blood flow

increased viscosity

during isovolumtric ventricular contraction ventricular pressure is

increasing

erthropoetin

is the product of the kidney

blood does not enter or leave ventricles during the period called

isovolumetric contraction

blood in the right pulmonary vents returns to the

left atrium

a thrombus in the second branch off of the aortic arch would affect the flow of blood to the

left side of the head and heart

plasma is____ while formed elements are____

liquid portion of blood, the cells when the wrong good type is given to a patient, the antibodies in the patients blood react with the antigens on the surface of the transfused blood causing a reaction called: nose of these

which of the following cel types is incorrectly matched with its description

lymphocytes-become macrophages

chemoreceptors sensitive to blood carbon dioxide levels are primary located in the

medulla oblongata

the greater the compliance

more easily the vessel wall stretches

neutrophils of the blood are derived from a population stems called

myoblasts

which of the following layers forms the bulk of the heart wall

myocardium

which type of material is not transported by the blood

neurotransmitters

the cardiac control center of the ____ coordinates the autonomic innervation of the heart

none of these

within the blood vessels, valves are found in the

none of these

which type of veins connect two primary capillary networks

portal veins

blood is moved through the vascular system by

pressure created by the heart

constriction of the papillary muscles would

prevent the AV values from producing into the atria

the ____are the last part of the elegiacal conducting system of the hearts

pukinje fibers

the valve located between the right ventricle and the pulmonary trunk is the

pulmonary semilunar valve

according to Poiseuille's law

resistance increases, flow decreases

heart murmurs may be caused by____, a condition in which valves are thickened and calcified

stenosis

the amount of blood ejected by the ventricles per beat is termed the

stroke volume

the delivery of oxygen and nutrients to the tissues of the body is accomplished through____ circulation

systemic

contraction of the ventricles is referred to as ventricular

systole

concerning heart sounds which of the following is correct

the first heart sound occurs at the beginning of ventricular systole

erythroblansosis fetaliss may occur when

the mother has RH- blood and the fetus has RH+

the period of isovoumetric interaction is immediately followed by..

the period of ejection

when the blood pressure of a vessel drops below the critical closing pressure of that vessel

the vessel collapses

a blood clot attached to a blood vessel wall is called a

thrombus

each hemoglobin molecule

transports four oxygen molecules

which of the following has the most important effect on blood velocity

vessel radius

what is taken up by the capillaries at their venous end

waste products