Chapter 15 Flashcards
Arteries
Blood vessels that carry blood from the heart to all organs and cells
Arterioles
Smallest of the arteries
Atria
The upper chambers or the heart
Capillaries
Tiny microscopic blood vessels that connect arteries to veins
Cardiac conduction
The hearts electrical system, consisting of specialized cells within the heart, muscles that carry an electrical signal, which regulates the pumping of the heart
Coronary arteries
The hearts own system of blood vessels
Diastolic
The lowest pressure in the heart; relates to ventricular relaxation
Pulmonary artery
The artery that connects the heart to the lungs
Pulse
60-100 beats per minute
Pulse pressure
The difference between the diastolic and systolic pressures in the heart
Septum
The wall separating the left and right sides of the heart
Systolic
The highest pressure in the heart correlates to ventricular contraction
Target heart rate
The percentage of the maximum heart rate that is safe to reach during exercise
Veins
Blood vessels that carry blood back to the heart
Ventricules
The lower chambers of the heart