During the period from the end of the S-wave until the beginning of the T-wave the entire heart is relaxed.  True  False

According to the Frank-Starling law of the heart, an increase in right atrial pressure and end-diastolic volume will result in an increase in right ventricular fiber length and cardiac output. Group of answer choices True False

Orangutan sexual dimorphism includes fat deposits on the male head and face. True or False

The role of calcium currents in cardiac contractile cells is to .  The role of calcium currents in cardiac conductive cells is to .    Choose between: release neurotransmitter, bring the membrane potential to threshold, initiate action potential, prolong action potential, terminate action potential

The cardiac action potential is substantially longer than a neuron potential due to: spontaneous depolarization Ca++ entry gap junctions myocardial contractility

Heart sounds you hear ( lub dupp ) are the sounds the depolarization of SA and AV nodes . True False

what is the clinical term for the esffect on heart activity when adrenalin binds to receptors of cardiac sinoatrial nodal cell

Congestive Heart Failure Why is this related to a valve or ventricular insufficiency? Where does the blood back up when it can't get out of the left ventricle?

If you have a resting heart rate of 125 beats/min or bpm then you have: a normal heart rate, bradycardia, or tachycardia

From doing his EKG in lab, Justin discovers his heart EKG has no P waves, which of the following would most likely not be true in this situation .   Group of answer choices a decrease in preload a slower than average heart rate an increase in afterload the AV node controlling heart contractions a lower stroke volume