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: wear compression garments, elevate legs, avoid salt, avoid tight clothing and high heels
Explanation:
Answer: d
The respiratory and circulatory systems bring oxygen and nutrients to the cells. The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The lungs contain the bronchi, bronchioles, and alveoli.
Explanation:
ASK
How long is too long to have a fever?
According to an article in the Mayo Clinic, you should call a doctor if: Your temperature climbs above 103 degrees. Your fever has lasted for more than three days.Jan 1, 2020
Health food and vaccine injection killed virus and bacteria . sports encouraged
