Which chamber of the heart sends blood to the lungs? :_______________ Which valve prevents backflow of blood into the left ventricle? :_______________ Which vessels carry oxygen-rich blood? :_______________

Explain why listening to the heart sounds can be clinically important.  In other words, what can this tell you about how the heart is functioning?

In 500 to 750 words, identify and describe the structure and function of the heart, how the cardiac cycle works, and what is cardiac output.

Please label the diagram with words

In this view of the superior surface of the heart, at the base where all the blood vessels enter and leave the heart,  #17 is the opening where the______ enter and transport blood into the _______. (specific chamber)

John is your 68-year old neighbor who was recently told by his doctor that his heart’s main pacemaker stopped working (“They told me it is called an SA node”). He knows you are a nurse, so he came to you to ask why his heart is still beating, but only at a rate of 50 times per minute. Please explain using appropriate physiological and anatomical details.

Which vessels carry oxygen-poor blood? :_______________ Which vessels carry blood away from the heart? :_______________ Which vessels carry blood back to the heart? :_______________ Which valve does blood pass through in order to enter the pulmonary artery? :_______________

A) The term used to describe one complete heartbeat, or the time for both contraction and relaxation of the heart muscle is the _____________________. B) The term _____?_________ refers to ventricular contraction, while the term ______?________ refers to ventricular relaxation. C) f a patient has a heart rate of 75 beats per minute, then what is the average length of time that each of the following parts of that cycle lasts? (time in secs) -atrial contraction:  ____________________ -atrial relaxation:   ____________________ -ventricular contraction ____________________ -quiescent period:  _____________________ -1 entire cycle: _____________________ D)  When you listen to (auscultate) heart sounds, what you are hearing are the sounds of valves _______?______________. E.) A heart murmur indicates some kind of valve ________?____________.

Which heart sound is longer in duration and louder, the first or the second heart sound. Briefly explain.

Detail S1 and S2 heart sounds. Include in your answer what valve closure and heart activity causes these sounds to occur. What is the Kentucky gallop?