Blinn College A&P 2 Lab Exam 2
Questions and Answers 100% Solved
sinoatrial node - ✔✔pacemaker of heart, stimulates internodal pathway,
conductile cells that initiates stimulus that results in heart contraction
internodal pathways - ✔✔conductile cells, receives stimulus from AV node,
distributes stimulus through AV node, stimulates atrial contraction and AV node
atrioventricular node - ✔✔located at junction of atria and ventricles, receives
stimulus from internodal pathway, stimulates AV bundle, conductile cells may
initiate stimulus if SA nodes do not
right bundle branch - ✔✔conductile cells that carry stimulus to apex of right
ventricle, stimulates purkinje fibers
Purkinje fibers - ✔✔network in right and left ventricle walls, conductile cells
that carry stimulus to ventricular cardiac muscle cells
Interatrial Node - ✔✔conductile cells, branch of internodal tract, located on
inner wall of left atrium, receives stimulus from SA node, stimulates atrial
contraction
intertrial node is also known as - ✔✔bachmann bundle
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©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
, atrioventricular bundle - ✔✔located in the inter ventricular septum, receives
stimulus from Av node, conductile cells that carry stimulus to bundle branches,
also called Bundle of His
left bundle branch - ✔✔conductile cells that carry stimulus to apex of left
ventricle
stimulates Purkinje fibers
the pericardium - ✔✔is a serous membrane enclosing the heart
the portion of the heart wall that dominates its volume and provides the
propulsion of blood is called the - ✔✔myocardium
as blood flows through the heart, it must pass through the ___ before entering
the right ventricle - ✔✔tricuspid valve
the right atrium does not receive blood from the - ✔✔pulmonary trunk
in a fetal heart, blood is shunted from the right atrium to the - ✔✔left atrium
isovolumetric relaxation - ✔✔The second heart sound is heard during which
phase of the cardiac cycle?
isovolumetric relaxation - ✔✔when ventricles are in diastole and the
myocardium is repolarizing
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©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
Questions and Answers 100% Solved
sinoatrial node - ✔✔pacemaker of heart, stimulates internodal pathway,
conductile cells that initiates stimulus that results in heart contraction
internodal pathways - ✔✔conductile cells, receives stimulus from AV node,
distributes stimulus through AV node, stimulates atrial contraction and AV node
atrioventricular node - ✔✔located at junction of atria and ventricles, receives
stimulus from internodal pathway, stimulates AV bundle, conductile cells may
initiate stimulus if SA nodes do not
right bundle branch - ✔✔conductile cells that carry stimulus to apex of right
ventricle, stimulates purkinje fibers
Purkinje fibers - ✔✔network in right and left ventricle walls, conductile cells
that carry stimulus to ventricular cardiac muscle cells
Interatrial Node - ✔✔conductile cells, branch of internodal tract, located on
inner wall of left atrium, receives stimulus from SA node, stimulates atrial
contraction
intertrial node is also known as - ✔✔bachmann bundle
1|Page
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
, atrioventricular bundle - ✔✔located in the inter ventricular septum, receives
stimulus from Av node, conductile cells that carry stimulus to bundle branches,
also called Bundle of His
left bundle branch - ✔✔conductile cells that carry stimulus to apex of left
ventricle
stimulates Purkinje fibers
the pericardium - ✔✔is a serous membrane enclosing the heart
the portion of the heart wall that dominates its volume and provides the
propulsion of blood is called the - ✔✔myocardium
as blood flows through the heart, it must pass through the ___ before entering
the right ventricle - ✔✔tricuspid valve
the right atrium does not receive blood from the - ✔✔pulmonary trunk
in a fetal heart, blood is shunted from the right atrium to the - ✔✔left atrium
isovolumetric relaxation - ✔✔The second heart sound is heard during which
phase of the cardiac cycle?
isovolumetric relaxation - ✔✔when ventricles are in diastole and the
myocardium is repolarizing
2|Page
©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025.
