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The vagus nerve reduces the heart rate....

The vagus nerve reduces the heart rate.

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Indicate whether the following statements are true of false : (a) Both auricles of amphibian heart open into the same ventricle. (b) Prawn's heart carries only oxygenated blood. (c ) Purkinje fibres are nerve fibres supplying the ventricular muscles. (d) The first heart sound results from a closure of semilunar valves. (e ) The vagus nerve reduces the heart rate. (f) The A-V node normally initiates the cardiac impulse. (g) Semilunar valves open during the ventricular diastole.

Indicate whether the following statements are true or false : (i) Fish heart contains only oxygenated blood. (ii) Closure of A-V valves produces the second heart sound. (iii) The vagus nerve retards the heart rate. (iv) The S-A node is the pacemaker of the heart. (v) Columnae carneae occur in the auricles. (vi) Purkinje fibres are nerve fibres present in the heart wall.

Vagus nerve is

The secretion of vagus nerve , which reduces the heart rate, is

Vagus nerve effects

Stimulation of the vagus nerve will make the heart beat

The inhibitory effect of the vagus nerve on the heart is due to the secretion of

Vagus nerve is a

The function of vagus nerve innervating the heart is to