Fill in the Blank QuestionFill in the blank question.The sinoatrial node is a mass of specialized noncontractile cells located just beneath the epicardium in the atrium near the opening of the superior .

What answer best describes the location of the sinoatrial node?

Sinoatrial node is located in the-*1 pointUpper wall of right ventricleUpper wall of right auricleUpper wall of left auricleUpper wall of left ventricle

The Sinoatrial node is the normal pacemaker of the heart with a rhythm of 70-80 bpm. The SA node has an unstable resting potential. Question 4Answera.Both statements are TRUEb.First statement is TRUE. Second statement is FALSEc.Both statements are FALSEd.First statement is FALSE. Second statement is TRUE.

What is the function of sinoatrial node?*1 pointProtects heartPrevents backflow of bloodRegulates contraction and relaxation of heart musclesHolds heart in positio

Which of the following is said to the be the pacemaker of the heart:The atrioventricular nodeThe semilunar nodeThe sinoatrial nodeThe Purkinje fibres