Well ap v2 air - Study guides, Class notes & Summaries

4TH SEMESTER URDEN 1. Which of the following structures is the primary pacemaker of the heart? a. Ventricular tissue c. Sinoatrial node b. Atrioventricular node d. Purkinje fibers ANS: C With an intrinsic rate of 60 to 100 beats/min, the sinoatrial node is the primary pacemaker in a healthy heart. The atrioventricular node beats 40 to 60 beats/min. Ventricular tissue must have an electrical impulse to contract. Purkinje fibers beat 15 to 40 beats/min. 2. The atrioventricular (AV) nod...

South Georgia State College: Hesi A2 Reading Questions and Answers Food Food and drink are necessary and desirable, but their abuse can cause serious physical and metal problem. Many physicians believe that overeating is one of the country's main health problems, since it places a great strain on the heart, can lead to diabetes, and often shortens the individual's life span. To fill an emotional void. People often turn to food when they are bored or lonely. Another area of concern...

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