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:
C. Change in the workplace happens fairly infrequently.
Explanation:
Answer:
3. Eliminating
4. Inactive
Explanation:
You have to fill in the blanks in phrases on lines 3 and 4, with appropriate words from the list of six given on top right corner of the window (Inactive, Energy, Eliminating, RMR, Metabolism, Eating).
Phrases 1, 2, 5 and 6 don't have any blank space to fill in.
Phrase 3:
Eating habits, __ELIMINATING__ calories and physical activities are factors.
Phrase 4:
An active teen needs more calories than an __INACTIVE__ teen.
I hope this helps.
The answer is most probably C or none .
