× Didn't find what you were looking for? Ask a question
  
  
Top Posters
Since Sunday
j
22
22
i
19
a
18
z
18
m
17
D
17
16
j
16
K
16
s
16
a
16
New Topic  
wrote...
Posts: 1076
Rep: 0 0
A year ago
Which heart sound is produced by vibrations within the heart chambers or in the major arteries from the back-and-forth flow of blood?
 
  a. S1 and S2
  b. S3 and S4
  c. Murmur
  d. Physiologic splitting
Read 13 times
1 Reply
Replies
Answer verified by a subject expert
wrote...
Top Poster
Posts: 851
Rep: 0 0
A year ago
ANS: C
Murmurs are the sounds that are produced in the heart chambers or major arteries from the back-and-forth flow of blood. S1 and S2 are normal heart sounds. S1 is the closure of the tricuspid and mitral valves, and S2 is the closure of the pulmonic and aortic valves. S3 is a normal heart sound sometimes heard in children. S4 is rarely heard as a normal heart sound. If it is heard, medical evaluation is required. Physiologic splitting is the distinction of the two sounds in S2, which widens on inspiration. It is a significant normal finding.
1
Related Topics
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
  126 People Browsing
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 159

Previous poll results: Who's your favorite biologist?
Related Images
 615
 1063
 91