Answer:
This usually occurs as a result of fatigue, overuse, or improper use of a muscle.
Strains can happen in any muscle, but they're most common in your lower back, neck, shoulder, and hamstring, which is the muscle behind your thigh.
A muscle strain, or pulled muscle, occurs when your muscle is overstretched or torn.
Answer:
40%
Explanation:
it is 40%!!!!!!!!!!!!!!!!!!!!!!:)
Deoxygenated blood comes into the right atrium via the superior vena cava.
Try putting an ice pack on it and elevating it
Acute exposure to high altitude can affect the cardiovascular system by decreasing oxygen in the blood (acute hypoxia). It also increases demand on the heart, adrenaline release and pulmonary artery pressures.
I hope this helped:))
