Answer:
Option). about 20 percent of the calcium ion required for contraction comes from outside the cell.
Explanation:
Calcium ions play an important role in cardiac muscle physiology. Calcium ions influx is responsible for plateau phase after depolarization. Calcium ions also play role in muscle contraction with the help of troponin (regulatory protein).
For contraction, about 20 percent of calcium ions are supplied from outside of the cell, while rest of the calcium ions are released from SR (sarcoplasmic reticulum).
Thus, the correct answer is 'forth option.'
Answer:
sometimes it can if there is nothing in the way.
Remaining safe from self-inflicted injury
The priority is safety; the child must be protected from self-harm. Repetitive behaviors are comforting, and unless they are harmful their limitation is not a priority. Although feeding independently is a basic need that may be achieved, it is not the priority. Children who need help with toileting are not necessarily incontinent, and it is not the priority.
Answer: There is not enough information to answer this question
