Memmler's Structure And Function Of
The Human Body 11ed Chapter 13 The
Heart Quizzes And Ans.
Innermost layer of the heart wall; in contact with the blood of the heart, composed of
epithelial tissue. - ANSWER- endocardium
Middle layer of the heart wall; contains intercalated disks. - ANSWER- myocardium
Outer layer of the heart wall, also called the visceral layer, composed of connective
tissue. - ANSWER- epicardium
The sac that encloses the heart. - ANSWER- pericardium
The heart's upper receiving chamber on each side. - ANSWER- atrium
The heart's lower pumping chamber. - ANSWER- ventricle
What is the purpose of heart valves? - ANSWER- Valves direct forward flow of blood
through the heart.
The system that supplies blood to the myocardium. - ANSWER- The circulatory system
The contraction phase of the cardiac cycle. - ANSWER- systole
The relaxation phase of the cardiac cycle. - ANSWER- diastole
The amount of blood pumped by each ventricle in one minute. - ANSWER- cardiac
output
The two factors that determines cardiac output. - ANSWER- stroke volume
heart rate
The amount of blood ejected from the ventricle at each heart beat. - ANSWER- stroke
volume
The number of times the heart beats per minute. - ANSWER- heart rate
Scientific name for the heart's pacemaker; place where the heartbeat is initiated by
electrical impulses. - ANSWER- sinoatrial node (SA node)
, The system that exerts the main influence on the rate and strength of heat contraction. -
ANSWER- ANS (autonomic nervous system)
Technique that measures the electrical activity of the heart. - ANSWER- ECG, EKG
Technique that uses ultrasound to study the heart as it beats. - ANSWER-
echocardiography
Procedure that uses a thin tube threaded through a vessel for diagnoses or repair -
ANSWER- catheterization
Techniques that uses dye and xrays to visualize coronary arteries - ANSWER- coronary
angiography
coronary computed tomography
Pointed inferior portion of the heart. - ANSWER- apex
Layer of the heart that pumps blood - ANSWER- myocardium
Any partition that separates chambers of the heart. - ANSWER- septum
Receives blood low in oxygen from the body. - ANSWER- Right atrium
Receives blood high in oxygen from the lungs. - ANSWER- Left atrium
Sends blood low in oxygen to the lungs. - ANSWER- Right ventricle
Sends blood high in oxygen to the body. - ANSWER- Left ventricle
Promotes rapid transfer of electrical signals between cardiac muscles . - ANSWER-
intercalated disks
Separates the upper chambers of the heart. - ANSWER- interatrial septum
One complete sequence of the heart's contraction and relaxation. - ANSWER- cardiac
cycle
Sends impulses to the Bundle of HIS. - ANSWER- atrioventricular node
Variation in heart rate due to changes in the rate and depth of breathing. - ANSWER-
sinus arrythmia
Word root angio means - ANSWER- vessel
Word part stetho means - ANSWER- chest
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