Answer:
SA node
Explanation:
The SA node (called the pacemaker of the heart) sends out an electrical impulse. The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles. The lower heart chambers (ventricles) contract or pump.
The presence of the base peak at 45 in combination with our knowledge about the nitrogen rule suggests that the peak at m/z 60 is likely the molecular ion because even molecular ions usually produce odd molecular fragments by breaking single bonds.
Answer:
The stress response, or “fight or flight” response is the emergency reaction system of the body. ... The stress response includes physical and thought responses to your perception of various situations. When the stress response is turned on, your body may release substances like adrenaline and cortisol.
Explanation:
Answer:
measels is caused by a single stranded Rna virus of the family Paramyxoviridae
Hyperkalemia, depolarization
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