Biology Today - May 2018
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MAY ’18 4 MAY ’ MAY ’18 6 MAY ’ MAY ’18 8 MAY ’ ...
CONTENTS Competition Edge Class XII Class XI 10 Zoom in Bio The Human Heart 29 Bio Digest Biological Classification & Plant ...
The heart is one of the most important organs of human body. It is a muscular organ responsible for pumping blood through the bl ...
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The mammalian heart is derived from embryonic mesoderm that differentiates after gastrulation into mesothelium, endothelium, an ...
C-5A, 9337666760 ...
Aorta Left pulmonary artery Left subclavian artery Brachiocephalic artery Left common carotid artery Superior vena cava Right pu ...
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To prevent the AV valves from being pushed up into the atria when the ventricles are contracting (a condition called prolapse), ...
Working of SA node as pacemaker The AV nodal fibres when not externally stimulated discharge at 40-60 times/min. and Purkinje fi ...
nearly optimal degree of overlap for force generation. Therefore, the ventricle, because of its increased pumping, automatically ...
CARDIAC OUTPUT The amount of blood pumped by heart per minute is called cardiac output. Cardiac output of humans is approximatel ...
Heart murmurs Murmurs are abnormal sounds heard in various parts of the vascular system. The major cause of cardiac murmurs is d ...
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