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Total questions: 43
Worksheet time: 31mins
Blood flows from the pulmonary veins into the
pulmonary arteries
right atrium
lungs
left atrium
left ventricle
The space between the parietal and visceral layers of the pericardium is normally filled with
air
blood
adipose tissue
serous fluid
The bicuspid valves located between the
right ventricle and aorta
right ventricle and pulmonary trunk
left atrium and the left ventricle
right atrium and left atrium
right ventricle and left ventricle
There is a semilunar valve between the
right ventricle and the aorta
right ventricle and the pulmonary trunk
left atrium and left ventricle
right atrium and right ventricle
Blood flows from the superior vena cava into the
right atrium
inferior vena cava
left atrium
aorta
pulmonary trunk
The layer of the heart wall responsible for its pumping action is the
fibrous pericardium
serous pericardium
epicardium
myocardium
Which of the following lists the elements of the hearts conduction system in the correct order?
SA node, AV bundle, bundle branches, AV node, conduction myofibers
AV node, SA node, AV bundle, bundle branches, conduction myofibers
SA node, AV node, AV bundle, bundle branches, conduction myofibers
SA node, AV bundle, AV node, bundle branches, conduction myofibers
The fossa ovalis is a prominent depression seen in the
wall of the aorta
interventricular septum
coronary sinus
semilunar valves
interatrial septum
During the normal cardiac cycle, the atria contract when they are directly stimulated by the:
SA node
AV node
conduction myofibers
baroreceptors
The atrioventricular valves close when the
SA node fires
atria contract
ventricles relax
ventricles contract
The myocardium is made of
smooth muscles
cardiac muscle
skeletal muscle
endothelium
Blood flows into the coronary arteries from the
coronary sinus
superior vena cava
descending aorta
pulmonary trunk
ascending aorta
The function of the chordae tenineae is to
pull the walls of the ventricles inward during contraction
open the semilunar valves
prevent eversion of the AV valves during ventricular systole
hold the heart in place within the mediastinum
The role of the papilary muscles is to
secrete pericardial fluid into the pericardial space
hold the heart into position within the mediastinum
tighten the chordae tendineae during ventricular systole
transmit the action potential to the AV valves
All deoxygented blood returning from the systemic circulation flows into the
right atrium
right ventricle
coronary sinus
left atrium
left ventricle
The typical heart sounds are made by the
vibration of the chordae tendineae
flows of blood into the coronary arteries
opening of the valves
closing of the valves
recoil of the aorta and pulmonary trunk
On an ECG, depolarization of the ventricles is represented by the
P wave
T wave
QRS complex
P-Q interval
S-T segment
On an ECG, depolarization of the atria is represented by the
P wave
T wave
QRS complex
P-Q interval
S-T segment
The SA node is located
near the fossa ovalis in the interatrial septum
in the left atrial wall near the openings of the right pulmonary veins
in the right atrial wall near the opening of the superior vena cave
in the aortic wall near the openings to the coronary arteries
within the pectinate muscles of the right atrium
The (a) is formed from the union of the viens draining in the heart
The (a) receives blood from the left ventricle
The (a) carries deoxygenated blood from the upper body to the right atrium
The (a) carries oxygented blood to the left atrium
Excess fluid filling the pericardial space intoferes with the heart's pumping ability because
The fluid compesses the heart so it can not beat normally
it distorts the gradients needed for ion movements in the cardiac cycle
it causes cardiac myofibers to swell, so they pull apart from each other
the fluid dilutes the blood entering the atria
Angina pectoris is
an embryonic structure that develops into the aorta
pain accompanying myocardial ischemia
the heart's location within the mediastinum
part of the cardiac conduction system
Once ventricular pressure falls below atrial pressure
AV valves open
the heart is in its relaxation period
the ventricles begin to fill
blood flows out of the ventricles
A, B, C are all correct
The second heart sound (dupp) is created by the
closing of the atrioventriuclar valves
opening of the atrioventricular valves
closing of the semilunar valves
opening of the semilunar valves
vibration of the chordae tendineae during ventricular systole
Atrioventricular valves open when
the chordae tendineae contract
they are stimulated by the AV node
ventricular pressure falls below atrial pressure
atrial pressure falls below ventricular pressure
the papillary muscles contract
T OR F: Blood pressure readings are the result of cycles of contraction and relaxation in the heart
(a)
T OR F: The electrical connection between the atria and ventricles is the SA node
(a)
T OR F: most of the base of the heart is formed bu the ventricles, while the apex of the heart is formed by the atria
(a)
T OR F: The membrane surrounding and protecting the heart is the endocardium
(a)
T OR F: The SA node is the heart's pacemaker because it initates action pontentials at a faster rate then other areas of conduction system
(a)
T OR F: Chordae tendineae prevent the eversion of AV valves
(a)
T OR F: The bicuspid valve is located between the right atrium and the right ventricle
(a)
T OR F: The visceral layer of the serous pericardium is also known as the epicardium
(a)
T OR F: The apex of the heart is directed superiorly
(a)
The (a) node is located in the atrial wall near the opening of the superior vena cave
The (a) valve is located between the right atrium and the right ventricle
The (a) pumps blood into the aorta
The (a) pumps blood in the pulmonary trunk
The chamber of the heart that receives blood from the pulmonary veins is the (a)
Blood from the superior vena cava, inferior vena cava, and coronary sinus us received by the (a)
