Peculiarities of regulation of heart rate and stroke volume in rats during ontogeny.
Changes in heart rate and stroke volume after successive blockade of cardiac adreno- and cholinoceptors were examined on rats of different age. It was established that irrespective of animal age the heart rate remained unchanged under conditions of total adreno- and cholinergic blockade of the heart. Stroke volume under conditions of total adreno- and cholinergic blockade increased with age.
Abzalov
N I
NI
Laboratory of Physiology of Physical Training, Tatar State Humanitarian Pedagogical University, Kazan.
Ziyatdinova
A I
AI
Abzalov
R R
RR
D018674:Adrenergic Antagonists / Q000494:pharmacology*; D000367:Age Factors; D000818:Animals; D001262:Atenolol / Q000494:pharmacology; D001285:Atropine / Q000494:pharmacology; D002302:Cardiac Output / Q000187:drug effects* / Q000502:physiology; D006339:Heart Rate / Q000187:drug effects* / Q000502:physiology; D018727:Muscarinic Antagonists / Q000494:pharmacology*; D010646:Phentolamine / Q000494:pharmacology; D010992:Plethysmography, Impedance; D011224:Prazosin / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology; D051381:Rats; D013318:Stroke Volume / Q000187:drug effects* / Q000502:physiology
D018674:Adrenergic Antagonists; D018727:Muscarinic Antagonists; D001262:Atenolol; D001285:Atropine; D011433:Propranolol; D011224:Prazosin; D010646:Phentolamine