A thrombus in the third branch off of the aortic arch would affect flow of blood into?
Left arm
left side of the head and neck
myocardium of the heart
right side of the head and neck and right upper arm
Venous blood return to heart is determined by all of these except:
Pumping action of heart
venous valves
activity of skeletal muscles
pressure changes in the thorax
Blood pressure is measured with a sphygmomanometer.
Atrial contraction of the heart is referred to as .
Valves similar to semilunar valves are found in .
The "pacemaker" region of the heart is the
AV bundle
SA node
bundle of His
Purkinje fibers
Fluid flows only when a pressure gradient is absent.
The structural components of the circulatory system include the heart and blood vessels.
The cavity of the heart that normally has the thickest wall is the
right atrium
right ventricle
left atrium
left ventricle
Respectively, the right and left atrioventricular valves are also known as
tricuspid, mitral
bicuspid, tricuspid
mitral, bicuspid
bicuspid, mitral
The protective saclike covering around the heart is the
endocardium
myocardium
pericardium
epicardium
The atria are the same structure as the auricle.
The palmar arches are branches of the and arteries.
The heart lies in the pelvic cavity.
High BP triggers to help correct
Blood flows from pulmonary capillaries to .
These blood vessels may be carrying oxygenated or deoxygenated blood:
Pericardial fluid is located between?
The visceral pericardium and the myocardium.
The visceral pericardium and the epicardium.
The parietal and visceral pericardium.
Myocardium and endocardium.
Epicardium and myocardium.
Chordae tendineae are associated with which structure(s)?
tricuspid valve and mitral valve
Atrioventricular valves
Brachiocephalic and Left common carotid
The tissue layers of blood vessels from exterior to interior are
tunica externa, tunica media, and tunica intima
tunica media, tunica intima and tunica externa
tunica intima, tunica media, and tunica externa
tunica externa, tunica intima, and tunica media
The atria is the same structure as the auricle.
Atherosclerosis is characterized by the deposition of lipids in the tunica intima.
The valve that guards the left atrioventricular orifice is called the
bicuspid
mitral
tricuspid
bicuspid and mitral
Which of the following most accurately describes what is measured by an electrocardiogram?
electrical conductivity
number of contractions per minute
the speed and strength of contractions
any abnormal functioning
Blood pressure at the vena cava and RA is mm Hg.
The greatest drop in blood pressure occurs across the arteriole.
Atrial natriuretic hormone (ANH) is a mechanism that increases blood volume and therefore venous return of blood to the heart.
Common carotid artery is not used for feeling the pulse in the neck.
The ECG deflection produced during repolarization of the atria and depolarization of the ventricles is the .
The first heart sound heard, or the lubb sound, is caused by the ventricles contracting and the AV valves closing.
