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.
Answer:
Cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition
Answer:
True
Explanation:
The World Energy Summit is an annual event that serves a purpose to advancing future energy. Since 2008 The World Energy Summit has commited to cleaner energy technologies.
The best technology would be Digital x-ray.
Diagnosis and treatment of bone fracture, doctors can diagnose fractures with x-rays. They may also use CT (computed topography) scans and MRI (magnetic resonance imaging). Broken bones heal by themselves and the aim of medical treatment is to make sure the piece of bone are lined up correctly.
Answer: a)Solvents
Explanation: Potential water hazard is the hazard or adverse condition created by the water area when they rise above the limit or due to any other factor. The water hazard usually harms the workers or other people an also the environment.
solvents is considered as a liquid substance that is added to the water to dissolve the components.This in not a preferred method for the controlling of the water hazard.
