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:
answer 1
Explanation:
If your eating when your hungry then your okay bc ur eating something.
Answer:
total net force= 47 N.
the motion of the couch will be towards Becky's friend.
Explanation:
the net force is obtained when the two forces are added.
the motion will be towards Becky's friend bcoz she's applying more force than Becky
People who have opposite personality traits such as aggressiveness, stubbornness, inflexibility, and tenseness are <span>people who typically do not live as long as the average life expectancy. This might due to the negative environment he or she has.</span>