cardiovascular n

where is the heartbeat intitated?

• autorhythmic cells

• contractile cells

• P wave

• T wave

• beginning of cardiac cycle

baroreceptors

• move movement

• monitor blood chem

• monitor blood pressure

chemoreceptors

• monitor movements

• monitor blood pressure

• monitor blood chem

which is the cell that is unstable resting membrane potential?

• autorhythmic cells

• contractile cells

Step 1: At rest, __ ion is inside the cell and __ ion will leave the cell

• Ca2+; K+

• K+; Ca2+

• Ca2+, Ca2+

• K+; K+

L-type __ channel will close as the __ voltage gated channels opens

• Ca2+;

  Ca2+; depolarization

• Ca2+;

  K+;

  repolarization

• K+,

  K+;

  repolarize

• Ca2+;

  K+;

  depolarize

action potentials the pacemaker potentials and action potentials in autorhymic fibers of

• AV

• SA node

• AV bundies

• Purkinje fibers

p wave represents

• atrial depolarization followed by atrial contraction

• atrial repolarization followed by atrial contraction

• atrial depolarization followed by ventricle reporalization

• atrial repolarization followed by ventricle depolarization

ORS represents

• atrial depolarization only

• atrial depolarization and ventricular repolarization

• ventricular repolarization

• ventricular depolarization and atrial repolarization

T wave represents

• depolarization of ventricle followed by repolarization of ventricle

• repolarization of ventricle followed by ventricle diastole

• depolarization of ventricle followed by repolarization of atria

• repolarization of ventricle followed depolarization of atria