Heart rate
what is the one factor that affects both HR and SV
fitness levels
what is the stroke volume equation
EDV-ESV
Preload is also known as
EDV
how much blood is collected in the ventricles before contraction
what is the atrioventricular valve on the right side of the heart called?
tricuspid valve
explain systole vs diastole
systole: contraction of the muscles, ejecting blood
diastole: relaxing of the muscles allowing blood to fill
slower heart rate means what for filling time
a slower heart rate coincides with a slower filling time
explain both EDV and ESV
EDV (preload) how much blood is collected in the ventricles before contraction
ESV (afterload) amount of blood that remains in the ventricles after each ventricular contraction
Is ESV the same as after load T or F
explain why or why not/ give both definitions
False
ESV- amount of blood remaining in each ventricle after ventricular contraction
Afterload- the pressure or resistance in arteries against which ventricles eject blood
what structure separates the left and right part of the heart
interventricular septum
Veins carry deoxygenated blood throughout the body to the heart T or F
if true name one exception
True
pulmonary veins
what factors affect heart rate
autonomic innervation
fitness levels
age hormones
if an infant has a heart rate of 120 and a stroke volume of 70 what is the cardiac output?
120 x 70 =8400
what is an EKG/ECG?
an electrocardiogram
records the electrical signals in the heart
what is the atrioventricular valve on the left side of the heart called?
Give both of its names
bicuspid valve
mitral valve
Arteries carry oxygenated blood throughout the heart to body T or F
if true name one exception
True
Pulmonary artery
what factors affect SV
fitness levels
heart size
gender
contractility
duration of contraction
preload
Afterload
Person A: is the carol/ baseline
Person B: has a higher heart contractility and after load
who has the higher cardiac output and why
Person A has the higher cardiac output.
Since CO = HR x SV
SV= EDV- ESV
higher contractility and after load are both things that make the ESV bigger, making SV smaller, therefore decreasing CO
systemic circulation versus pulmonary circulation
systemic circulation - oxygenated blood being pumped to body
pulmonary circulation- deoxygenated blood going from heart to lungs
name for semilunar valve carrying deoxygenated blood
pulmonary valve
which ventricle is substantially larger and why
the left because it pumps blood to the entire body while the right atrium pumps blood only to the lungs
Atrial diastole occurs from blank to blank on the cardiac cycle
(think PQRST)
from the R wave to the beginning of the P wave
You've lucked out! No math!
But...
What is the outermost layer of heart tissue?
fibrous pericardium
what is referred to as the hearts pacemaker generating impulses
SA node
name for semilunar valve carrying oxygenated blood
aortic valve
what conducts her impulses through the inter ventricular septum
bundle of branches