The father of a 2-year-old phones the emergency department on a sunday night and informs the nurse that his son put a bead in his nose. what is the most appropriate recommendation by the nurse? "be sure to take your child to the pediatrician in the morning so the pediatrician can remove the bead in the office." "ask your child to blow his nose several times; this should dislodge the bead." "try removing the bead at home as soon as possible. you might try using a pair of tweezers." "you should bring your child to the emergency department tonight so the bead can be removed as soon as possible."

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling