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Lecture 11 - circulation 3 all Questions & answers
Lecture 11 - circulation 3 all Questions & answers
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Lecture 11 - circulation 3✅contractile muscle and non-contracticle
Lecture 11 - circulation 3
two types of cardiac muscle-
pacemaker cells
vertebrate hearts are-✅myogenic
cardiomyocytes of vertebrate hearts produce- ✅spontaneous rhythmic
depolarizations
✅gap junctions,
cardiomyocytes are electrically coupled via - to ensure --
coordinated contractions
pacemaker cells have the fastest-✅intrinsic rhythm
modified cardiomyocytes are - in appearance-✅elongated and pale
important parts to conduct pathways in mammalian heart-✅SA node,
internodal pathways, AV nodes, bundle of his, purkinje fibers
SA and AV nodes are the main sites of - cells which are -- ✅pacemaker,
autorhythmic
✅
UNDERSTAND THE CONDUCTING PATHWAY IM NOT MAKING
FLASHCARDS FOR IT- ok
there is an AV node delay of 0.1 seconds to allow- ✅complete atrial
depolarization and contraction
are where the natural pacemakers are- ✅SA nodes
pacemakers are small with few- ✅myofibrils, mitochondria, or other
organelles
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