Answer:
Hope it helps
Explanation:
The Evolution of the capacity for culture is important in order to understand how the human body works. This is also the case for developing methods necessary for solving problems that may arise from accidents, diseases, and sickness.
<span>Repeated and prolonged episodes of stress can cause a state of exhaustion within the immune system which can ultimately cause infection.</span>
Answer:
Pericardial sac has protective tole
Explanation:
Pericardial sac or pericardium is a fibrous tissue that surrounds the heart. It has two coats:
- the outter coat-parietal pericardium
- the inner coat-visceral pericardium or epicardium which is double-layered and contains pericardial fluid between those two layers (pericardial fluid is necessary as a lubricant for the heart movement).
Besides lubrication, percardium also protects heart from infections, fixes it and limits its movements.
