The correct answer is D. Multiple sclerosis
It is still unknown what exactly causes multiple sclerosis but there are theories that claim it is due to large physical strain put on the body. That's why there are numerous women who get it after child birth.
Answer:
Refer to a specialist, dietician
The SA Node is the heart's normal pacemaker. When the SA Node depolarizes, electrical signal spreads through the atrial muscle causing contraction.
Explanation:
Inherent rhythmicity / automaticity - The property of the pacemaker cells of the heart to start electrical sequence of depolarization and repolarization.
SA Node or Sino-atrial Node generates the electrical signal.
The electrical signal passes through internodal pathways, atrial fibres, atrioventricular node (AV Node), the bundle of His, Purkinje fibres, right bundle branch, left bundle branch.
Systole - Contraction of cells when the electrical signal of depolarization reaches the contractile cells.
Diastole - Relaxation of cells when the electrical signal of repolarization reaches the myocardial cells.
:) hope i helped
1. carbon monoxide.
2. Which important organ is part of the cardiovascular system? Heart.
3. water.
4. medicine abuse
5. cool-down
6. The body is more vulnerable to disease.
7. the first time you use them
8. physical activity
9. seizures
10. nervous system
1. family doctor
2. sharing toothbrushes
3. all of these
4. True
5. False
6. 20
7. False
8. tracking the spread of diseases
9. False
10. False
11. rapid test
12. vaccine
13. eating contaminated food
14. white blood cells
15. There is no cute for HIV/AIDS
