BioCoach Activity

Concept 4: Blood Pressure

Heart contractions generate blood pressure, the fluid pressure that blood exerts against vessel walls.

  • Blood pressure is expressed in mm Hg.
  • Normal blood pressure in adults is 120 mm Hg/80 mm Hg (systolic/diastolic), when measured at the brachial artery in the arm, the standard point of reference.
  • Blood pressure is highest in arteries and lowest in veins.