Question

question 4 (1 point) hypocalcemia causes weak cardiac contractions because: permeability of nerve membranes increases insufficient calcium ions are available for muscle contraction low phosphate ion levels prevent muscle contraction excessive amounts of calcium are stored in cardiac muscle question 5 (1 point) in the initial stage, vomiting results in: metabolic acidosis metabolic alkalosis respiratory alkalosis none of the above are correct

Explanation:

For Question 4, calcium ions are crucial for muscle contraction. Hypocalcemia means low - calcium levels, so insufficient calcium ions are available for muscle contraction. For Question 5, vomiting in the initial stage leads to loss of gastric acid (hydrochloric acid). Loss of acid causes an increase in blood pH, resulting in metabolic alkalosis.

Answer:

Question 4: insufficient calcium ions are available for muscle contraction
Question 5: metabolic alkalosis