What explains the 10,000 to 1 selectivity of the potassium channel for K+ over Na+ ion?   Note: Instead of providing the actual answer from the textbook, I look forward for a precise and original answer for this question. At least

could you please write the equation on paper with pen? I cannot understand the equation clearly.

Question 27 The major extracellular cation is: O Phosphate O Chlorine Calcium Sodium Potassium

(please type answer with explanation).

Question 29 0.8 / 4 points Which of the following types of ion channels are involved in propagating an action potential? **Mark all that apply** leaky Na+ channels ligand-gated K+ channels voltage-gated K+ channels voltage-gated Ca+2 channels voltage-gated Na+ channels

Question 12 (5.333 points) Listen A 1-year-old child weighing 26 lbs is prescribed ibuprofen 60 mg orally every 6 hours. The nurse has ibuprofen suspension 100 mg/5 mL on hand. The safe dose range is 5-10 mg/kg every 6-8 hours for a maximum of 40 mg/kg/day Blank 1: Calculate the single safe dose range in mg/dose: (round to nearest tenth) Blank 2: How many mL would this dose be to administer? (round to nearest tenth) Blank 3: Should the nurse administer this dose (yes/no, if no, why?) Blank # 1 Blank # 2 Blank #3 Question 13 (4.444 points) Listen A/ A 38 lb child is prescribed phenobarbital 10 mg orally every 12 hours. The nurse has phenobarbital 15 mg/5 mL in the med cart. The SDR is 1 to 6 mg /kg daily in two divided doses not to exceed 100 mg/day.

(please type answer fast).

Question 19 The client with inflammatory bowel disease has the following blood test results. Identify the correct interpretation:     Patient Normal Range Hgb (hemoglobin): 108 (130 - 180 g/L (Male); (115 - 165 g/L (Female)) Leukocytes: 10.5 (4.0 - 11.0 x 109/L) HCT (hematocrit): 0.35 (0.400 - 0.540 L/L (Male)) (0.370 - 0.470 L/L (Female)) Platelets: 350 (150 - 400 x 109/L) Question 19 options: Anemia Hypoalbuminemia Infection Dehydration

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