Currently the majority of internal pacemakers use biological batteries because they have a predictable power curve.

During muscle contraction, crossbridges are formed between the myosin heads and the:

a. sarcomeres b. actin filaments c. muscle fibers d. sodium ion channels

In which of the following situations would home sleep apnea monitoring be indicated?

A) An infant who has gone 2-3 months without significant numbers of alarms or episodes of apnea B) An asymptomatic preterm infant C) An infant with one or more severe apparent life-threatening event (ALTE) D) An overweight infant