While your heart rate increases, your blood pressure doesn't. When you have an increased heart rate your heart is doing more beats a minute dilating your vessels to allow more blood flow. Blood pressure is measured in two ways, systolic pressure and dystolic pressure. (120/80)
What does this question even mean
A two-track mind is what i got on apex.
Answer:
It's fibers
Explanation:
Its fibers are longer than they are wide, and they are striated, like skeletal muscle fibers. But, unlike skeletal muscle fibers, cardiac muscle fibers have distinct ends to them, called intercalated discs.