The lines crossing the circle of systems represent the pathways that your nerves and blood take throughout your body. Thus, option "C" is correct.
Where in the body are blood vessels and nerve endings found'?
Beneath the skin or layers of skin in the body. These blood vessels and nerve endings are located specifically in the middle layer of the skin which is called the dermis.
Thus, option "C" is correct.
To learn more about nerves and blood click here:
https://brainly.com/question/10610580
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