Photoplethysmography is used to track of heart rate during a workout
Answer:
C. An AED
Explanation:
A portable device that examines a person's cardiac rhythm and administers an electric shock to the heart is known as an automated external defibrillator (AED).
Answer:The nervous system takes in information through our senses, it then processes it and then triggers a reaction, so when you see your favorite celebirty youd feel a jolt of excitement and adrenaline, the adrenaline makes you feel confident, excited, and energetic. your brain sends a signal to your body to move towards the person and then your brain is like “bro go speak” and so your diaphragm and pushes air up to your voice box then voice cord Vibarates and boom voice
Explanation:
