Show how the drug listed below could lower blood pressure by placing in order the variables shown below.  Keep the regulation of blood pressure diagram in mind and guide me step-by-step through the process. Start low on the diagram for your first number and only write numbers to save time.  Furosemide (Lasix) – A diuretic (a substance that promotes the excretion of urine).      1. Decreased SV      2. Decreased venous return      3. Decreased blood volume      4. Decreased salt and water      5. Decreased MAP      6. Decreased balance between ISF and blood      7. Decreased CO      8. Decreased EDV

All are true of smooth muscle except:    a. Calcium binds to troponin     b. Calmodulin binds calcium     c. Myosin light chain kinase is activated     d. Myosin is phosphorylated     e. Myosin binds to actin

In which vessels is the tunica media largest? ______

The ______ spread throughout the ventricles to conduct action potentials directly to the ventricular myocardial cells.

Identify three ways in which a ventricular myocardial action potential differs from a SA Nodal action potential.  For each of the three ways, make sure you state the difference between the two. 

Any substance (for example, epinephrine) that increases the force of contraction of the heart is said to have a ______ effect on the heart.  Be specific.

The _______ are the blood vessels primarily responsible for variably distributing blood flow to different organs.

A skeletal muscle fiber type important in power activities is the _______.  Be specific.

A person has a blood pressure of 129/77:             a. What is the value of the diastolic pressure and units? ______      b. What is the value of the mean arterial pressure and units? _______  Write equation, show all work, and include units.  Round the answer to two decimal places.      c. What is the value of the systolic pressure and units? ______     d. Would any sound be heard when the pressure in an external cuff around the arm was 71 mm Hg?  Yes or no? ____     e. Would any sound be heard when the pressure in an external cuff around the arm was 115 mm Hg?  Yes or no? ____     f. What is the value and units of the pressure at which the sound becomes laminar? _____

_______ muscle fibers are red and are less likely to fatigue.  Be specific.