EBK HUMAN ANATOMY
9th Edition
ISBN: 9780134424828
Author: Nath
Publisher: YUZU
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Chapter 21, Problem 1CT
Summary Introduction
To review:
The reason of the gurgling sound at the beginning of the systole.
Introduction:
The abnormal sounds during the heartbeat cycle of a person are known as heart murmurs. These sounds are indicative of any medical condition. The swishing or whooshing sounds besides the normal “lub-dup” sounds of the heart are the heart murmurs. The heart murmurs can be congenital or may develop later in a person’s life.
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Select the best answer or answers from the choices given: In the heart, which of the following apply? (1) Action potentials are conducted from cell to cell across the myocardium via gap junctions, (2) the SA node sets the pace for the heart as a whole, (3) spontaneous depolarization of cardiac cells can occur in the absence of nerve stimulation, (4) cardiac muscle can continue tocontract for long periods in the absence of oxygen. (a) all of the above, (b) 1, 3, 4, (c) 1, 2, 3, (d) 2, 3.
Another patient had an abnormal heart sound that indicated a stenotic valve. Define this condition, and contrast it with an incompetent heart valve.
A) A heart murmur indicates some kind of valve __________?__________.
B) A heart valve that has a smaller than average opening is said to be
______________?________. (See heart murmur video) https://www.youtube.com/watch?v=dBwr2GZCmQM
C.) Describe where you would place a stethoscope to hear the sounds of each of the following heart valves:
-Aortic:
-Pulmonary:
-Tricuspid:
-Mitral:
D.) At which of the superficial pulse points would you expect to feel the strongest pulse? ___?____.
Chapter 21 Solutions
EBK HUMAN ANATOMY
Ch. 21 - Match each numbered item with the most closely...Ch. 21 - Prob. 2RFTCh. 21 - Prob. 3RFTCh. 21 - Prob. 4RFTCh. 21 - Prob. 5RFTCh. 21 - Match each numbered item with the most closely...Ch. 21 - Prob. 7RFTCh. 21 - Prob. 8RFTCh. 21 - Prob. 9RFTCh. 21 - Match each numbered item with the most closely...
Ch. 21 - The potential space between the parietal and...Ch. 21 - Prob. 12RFTCh. 21 - Which of the following is not true of intercalated...Ch. 21 - Prob. 14RFTCh. 21 - The pacemaker cells of the heart are located in...Ch. 21 - Prob. 16RFTCh. 21 - Prob. 1RCCh. 21 - If the papillary muscles fail to contract, (a)...Ch. 21 - Prob. 3RCCh. 21 - Prob. 4RCCh. 21 - Prob. 5RCCh. 21 - Define a pacemaker cell, and list the group of...Ch. 21 - Prob. 7RCCh. 21 - Prob. 8RCCh. 21 - Why are nodal cells unique? What is their...Ch. 21 - Prob. 10RCCh. 21 - Prob. 1CTCh. 21 - 2. Lee is brought to the emergency room suffering...Ch. 21 - Prob. 3CT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Select the best answer or answers from the choices given: An ECG provides information about (a) cardiac output, (b) movement of the excitation wave across the heart, (c) coronary circulation, (d) valve impairment.arrow_forwardSelect the best answer or answers from the choices given: Blood flow in the capillaries is steady despite the rhythmic pumping of the heart because of the (a) elasticity of the large arteries, (b) small diameter of capillaries, (c) thin walls of the veins, (d) venous valves.arrow_forwardWhat causes the heart sounds S1 and S2?arrow_forward
- Before Leo is released from the hospital, his physician examines him thoroughly one final time. Dr. Tong detects with his stethoscope a high-pitched blowing systolic murmur. This murmur is best heard directly under his left nipple. A regurgitant heart valve is suspected. However, when Dr. Tong reviews Leo's medical records, he sees no prior history of a heart murmur. He makes a note to follow up with this when Leo returns. What is a systolic murmur? What is a regurgitant heart valve? The timing and location of the murmur implicates which of Leo’s valves is involved?arrow_forwardSelect the correct statement regarding the AV node B) it produces the P wave on the EKG C) it is also known as the heart's pacemaker D)it contains autorhythmic cellsarrow_forwardWhat causes the "lub" sound in the cardiac cycle?arrow_forward
- Draw an ECG and label the waves. Indicate the electrical events in the heart that produce these waves.arrow_forwardWhy is the Sino-atrial node called the pacemaker of the heart?arrow_forwardSelect the best answer or answers from the choices given: Tracing the blood from the heart to the right hand, we find that blood leaves the heart and passes through the aorta, the right subclavian artery, the axillary and brachial arteries, and through either the radial or ulnar artery to arrive at the hand.Which artery is missing from this sequence? (a) coronary, (b) brachiocephalic, (c) cephalic, (d) right common carotid.arrow_forward
- Select the best answer or answers from the choices given: Which of the following can lead to decreased venous return of blood to the heart? (a) an increase in blood volume, (b) an increase in venous pressure, (c) damage to the venous valves, (d) increased muscular activity.arrow_forwardWhat produces the first and the second heart sounds?arrow_forwardIf the electrocardiogram looks like these, what is wrong with the heart and why?arrow_forward
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