bio quiz 29 & 30

What determines blood pressure?

• stroke volume

• volume of blood in the arteries

• diameter of arteries

• volume of blood in the aorta

·      force of blood against artery when ventricles contract

relaxation of the ventricle

What 2 factors affect peripheral vascular resistance?

• volume of blood in arteries

• Thickness of blood

• diameter of arteries and arterioles

• diameter of veins and venules

deficient oxygen

3 things that affect cardiac output

• exercise and emotion (HR)

• strength and length of cardiac muscle fibers

  contractility of heart

• stroke volume and heart rate

• volume of blood in arteries

how do the veins get blood back to the heart

• skeletal muscle pump

• increased heart rate

• increased contractility of tissue

• respiratory pump

act of listening to the heart using a stethoscope

mechanisms that change circulation of the blood

amount of blood ejected per beat