Poll

President Donald Trumps presidency will be:
Excellent
Great
Neither good nor bad
Bad
Terrible
If you would like to vote in this poll, please login or register

New Topic  
wrote...
Posts: 8
Credits: 0
Rep: 0 0
4 years ago Edited: 4 years ago, rocrow
describe how the frog heart and human heart differ anatomically

what does an extrasystole correspond to?  how did you induce an extrasystole on the ECG tracing?

why is it important that wave summation and tetanus do not occcur in the cardiac muscle?
Post Merge: 4 years ago

hows this:



1.   The frog heart is an amphibian heart and only has  three chambers in the heart, two atria and one ventricle. The ventricle is not fully separated.  Instead it's partly separated by the conus arteriosus. The blood is slightly mixed. The ventricle delivers oxygenated blood to the systemic and pulmocutaneous arteries.  The human, on the other hand, has a heart with four chambers, and the two ventricles are fully separated. The oxygenated blood from the lungs goes to the systemic aorta.


2.   An extrasystole corresponds to a premature contraction of one of the heart cavities.  To induce one on the ECG tracing you need to shock the heart during relaxation.
Rated
Read 12384 times
1 Reply
replies
wrote...
*
*
4 years ago
 The main anatomical difference between the frog heart and the human heart is that the frog heart has
You correctly answered: c. a single, fused ventricle.

 An extrasystole corresponds to
You correctly answered: c. an extra ventricular contraction

Tetanus is not possible because external stimulation cannot increase the frequency of contraction until a
relaxation phase
Volunteers are seldom paid; not because they are worthless, but because they are PRICELESS!
New Topic      
Similar Topics that might Interest You...
General Biology   4 years ago   clion815   bio_man   3 Replies   2729 Views
General Biology   4 years ago   kelly2010   ThePsychic   1 Reply   1548 Views
General Biology   4 years ago   teddybear2011   bio_man   3 Replies   3175 Views
Anatomy and Physiology   3 years ago   sbw1027   bio_man   1 Reply   952 Views
This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.

Explore

Post homework questions online and get free homework help from tutors.
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
There are currently 253 guests browsing and 6 members online. So far today, 765 students have registered.
Related Images
1002
0
06/25/11

1018
0
08/27/12

160
0
05/30/15