Single Choice

In the heart of frog, which of the following is considered as the pacemaker?

APylangium
BSynangium
CTruncus
DSinus venosus
Correct Answer

Solution

In amphibians, such as the frog, the pacemaker is the sinus venosus, an enlarged region between the vena cava and the right atrium. The venae cavae do not open directly into the auricles but into another chamber, the sinus venosus, which drains into the right auricle.

SIMILAR QUESTIONS

Animal Physiology: Circulation and Excretion

In which one of the following pairs, the two items mean the same thing?

Animal Physiology: Circulation and Excretion

Sino-atrial node is called as the pacemaker of our heart. Why?

Animal Physiology: Circulation and Excretion

Pacemaker is situated in the

Animal Physiology: Circulation and Excretion

Which of the following is the correct pathway for propagation of cardiac impulse?

Animal Physiology: Circulation and Excretion

Where is the pacemaker situated?

Animal Physiology: Circulation and Excretion

Pacemaker influences

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