How does electrical communication in the heart compare to electrical communication in skeletal muscles? ?

Ok so my eye has been hurting since i woke up and then it keeps getting blurry its only left eye and idk what to do

Bloodborn pathogens are infectious microorganisms carried by what?

The main reason tommy might use static stretching is a. to relax his entire body b. to prepare his muscles for sports c. to increase his long term flexibility d. to slow his body down after exercise