AV node/valve question?
Monday, February 8th, 2010Takara Taji asked:
23.Which of the following is TRUE?
a.Conducting cells at the AV node are also known as “pacemaker cells.”
b.Conducting cells at the SA node provide the heart’s automaticity by firing at regular intervals.
c.Signals are sped up at the AV node to allow the atrial and ventricular contractions to occur almost simultaneously.
d.The ventricles begin their contractions at the AV node and then work their way down to the apex of the heart.
e.Papillary muscle contractions drive blood flow while ventricular muscles brace AV valves.
f.Signals from the Medulla oblongata and Pons of the brain tell your heart when to beat.
Krylon Spray Paint
23.Which of the following is TRUE?
a.Conducting cells at the AV node are also known as “pacemaker cells.”
b.Conducting cells at the SA node provide the heart’s automaticity by firing at regular intervals.
c.Signals are sped up at the AV node to allow the atrial and ventricular contractions to occur almost simultaneously.
d.The ventricles begin their contractions at the AV node and then work their way down to the apex of the heart.
e.Papillary muscle contractions drive blood flow while ventricular muscles brace AV valves.
f.Signals from the Medulla oblongata and Pons of the brain tell your heart when to beat.
Krylon Spray Paint
