Answer the following statements true (T) or false (F)
1. The intercalated disks that link the heart cells assist in the efficient conduction of the heart contraction.
2. The sinoatrial node is sometimes called the pacemaker of the heart.
3. The AV node initiates the contraction of the atria.
4. The Purkinje fibers and the bundle of His are involved in the contraction of the ventricles.
5. A patient with a serious heart block may be treated with an artificial pacemaker.
1. TRUE
2. TRUE
3. FALSE
4. TRUE
5. TRUE
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