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:
Explanation:
The number of mental health issues among school-age children has skyrocketed in the last two decades, causing widespread concern and leaving educators scrambling for solutions. According to a recent Blue Cross Blue Shield report, major depression has increased by 65 percent for girls and 47 percent for boys since 2013. Clearly, students require comprehensive support to deal with emotional disturbances that have a negative impact on their daily lives and may jeopardize their futures.
Hi there! The answer is False. Once someone is addicted to something, it is very difficult to stop. Drugs and alcohol are very hard to stop, even if you have determination. Alcoholics and drug addict's bodies are used to and crave what they are addicted to. Their cravings and body reacting to the withdrawal of not having the craving satisfied often overwhelmed their sense of judgement or determination. Hope this helps, don't do drugs and have a wonderful day!!
Answer:
A
Explanation:
Carbohydrates give energy and if your low in them then you will have less energy.