Cardiovascular (2)

• Veins


  • Return blood to the heart
  • Don't have significant amounts of smooth muscle
  • Have valves
• Heart


  A pump that contracts and expels blood ("Systole" - increased pressure) and relaxes and fills with blood ("Diastole" - decreased pressure)
• Cardiac Output


  The volume of blood ejected by one ventricle of the heart in one minute
• Stroke Volume


  The volume of blood ejected from the ventricle in one contraction (beat)
• Systolic blood pressure


  The maximum arterial blood pressure that occurs during ejection of blood from the heart into the arteries
• Diastolic blood pressure


  The minimum arterial pressure that occurs during filling
• Cardiac output


  Can be altered by changing the force of contraction, volume of blood ejected, and frequency (beats per minute)