1
Q
Describe how myogenic stimulation brings about contraction of the atria and the ventricles.
A
Myogenic stimulation means in external nerve impulses involved
The contractions are initiated by the SAN
Depolarisation causes atrial to contract
There is a delay at the AVN
Depolarisation through bundle of His
Edexcel Biology B A-level
flashcards
Decks in class (31)
# Cards
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1.1 Chemistry For Life17
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1.2 Biological Molecules 124
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1.3 Biological Molecules 222
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1.4 Enzymes8
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2.1 Eukaryotic Cells0
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2.2 Prokaryotic Cells0
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2.3 Eukaryotic Cell Division - Mitosis0
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2.4 Meiosis And Sexual Reproduction0
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3.1 Classification1
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3.2 Natural Selection0
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3.3 Biodiversity2
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4.1 Cell Transport Mechanisms0
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4.2 Gas Exchange0
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4.3 Circulation1
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4.4 Transport In Plants0
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5.1 Cellular Respiration0
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5.2 Photosynthesis0
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6.1 Bacteria And Disease0
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6.2 Non-bacterial Pathogens0
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6.3 The Response To Infection0
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7.1 Using Gene Sequencing0
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7.2 Factors Affecting Gene Expression0
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7.3 Gene Technology0
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8.1 Genetic Information0
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8.2 Gene Pools0
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9.1 Chemical Control In Mammals And Plants26
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9.2 The Mammalian Nervous System41
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9.3 Homeostasis31
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10.1 The Nature Of Ecosystems0
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10.2 The Efficiency Of Ecosystems0
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10.3 Human Effects On Ecosystems0
