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Which of the following cations is required for the conversion of prothrombin into active thrombin by thromboplastin?
The blood protein involved in blood coagulation is
Neurogenic heart is characteristic of
Neurogenic heart stops beating on cutting nerve supply.
Systole refers tothe contraction of
Systole refers to contraction of atria (atrial systole) which propels blood into ventricles and contraction of ventricles (ventriclular systole) expels blood into aorta and pulmonary artery.
Heart beats are accelerated by
When the heart beat increases the condition is called
Purkinje fibres are found in
Cardiac cycle in man takes about
Largest heart is found in
In the evolution of animals a heart to pump the blood is found for the first time in
In earthworm, an annelid, 4 pairs of thick muscular, pulsatile hearts are present.