Blood enters into the heart because of muscles of..... - Study24x7
Social learning Network

Warning: include(./views/auth.php): failed to open stream: Permission denied in /var/www/html/live/loginRightSlider.php on line 18

Warning: include(): Failed opening './views/auth.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/live/loginRightSlider.php on line 18
Biology online classes
41 followers study24x7 10 Aug 2020 05:22 PM study24x7 study24x7

Blood enters into the heart because of muscles of.....

A

atria relax

B

ventricles contract

C

ventricles relax

D

atria contract

NET Class 12 (PCB) Sciences
Like Comment Share
study24x7
Write a comment

Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 893

Get the App

Download the Study24x7 App, so you can connect and collaborate.

study24x7
study24x7
Most Related Articles

    Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepostRltdArtcl.php on line 8