Answer:
Parasympathetic nervous system
Explanation:
Parasympathetic nervous system (PNS) along with sympathetic nervous system (SNS) makes autonomic nervous system (ANS). ANS controls the functioning of internal processes like digestion rate, heart rate, respiratory rate etc. During a threat or stressful situation SNS is activated. It increases heart rate, respiratory rate and directs blood flow towards peripheral muscles as a part of "fight or flight response". When the situation becomes normal, PNS is activated which restores all the vitals as a part of "rest and digest" mechanism.
Since here Byron almost got into an accident, he was scared a lot due to which his SNS was activated. Eventually when he realized that he is out of danger, his PNS got activated which returned his heart rate and blood pressure to normal levels.
I cant see the pictures right take another picture and maybe i will be able to help you
Chemical work, mechanical work, and transport work.
Chemical: An example would be the ATP building large molecules such as proteins for the cell (s)
Mechanical: An example of this would be the contraction of your muscle (s). The reason for this is because In your muscle cells, ATP transfers phosphate groups to certain proteins which allows them to then change shape starting a chain of events leading to your muscles contracting
Transport: An example would be transport work pumping solutes into a cell membrane.
Hope this helps! :)
The answer is palpitation.
