Save
...
Topic 7: Run for Your Life
7.3 Cardiovascular System
7.3.2 Cardiac Cycle
Save
Share
Learn
Content
Leaderboard
Share
Learn
Cards (14)
What is the cardiac cycle?
Sequence of events in heartbeat
During diastole, the heart muscles
relax
During diastole, atrial and
ventricular
pressure are low.
What happens to atrial pressure during systole?
Remains low
Stages of the cardiac cycle in order
1️⃣ Atrial Systole
2️⃣ Ventricular Systole
3️⃣ Diastole
What happens to atrial pressure during atrial systole?
Increases briefly
During ventricular systole, blood is forced into the pulmonary artery and
aorta
During diastole, both atrial and
ventricular
pressure decrease.
Match the heart valves with their function:
Atrioventricular Valves ↔️ Prevent backflow into atria
Semilunar Valves ↔️ Prevent backflow into ventricles
What triggers the opening of the atrioventricular valves?
Atrial pressure > Ventricular pressure
The proper opening and closing of heart valves ensure blood flows in the right
direction
Which neurotransmitter is released by the sympathetic nervous system to increase heart rate?
Epinephrine
The parasympathetic nervous system releases
acetylcholine
to decrease heart rate.
The sympathetic nervous system increases both
heart rate
and force of contraction.
See similar decks
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
13 cards
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
44 cards
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
68 cards
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
44 cards
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
68 cards
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
44 cards
7.3.2 Cardiac Cycle
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
32 cards
Edexcel A-Level Biology
8631 cards
7.3 Cardiovascular System
Edexcel A-Level Biology > Topic 7: Run for Your Life
206 cards
7.3 Cardiovascular System
Edexcel A-Level Biology > Topic 7: Run for Your Life
153 cards
Edexcel A-Level Biology
8664 cards
7.3.4 Blood Vessels and Circulation
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
75 cards
Topic 7: Run for Your Life
Edexcel A-Level Biology
1749 cards
7.3.3 Control of Heart Rate
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
30 cards
7.3.1 Structure of the Heart
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
48 cards
7.3.3 Control of Heart Rate
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
30 cards
Topic 7: Run for Your Life
Edexcel A-Level Biology
1586 cards
7.3.4 Blood Vessels and Circulation
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
114 cards
7.3.1 Structure of the Heart
Edexcel A-Level Biology > Topic 7: Run for Your Life > 7.3 Cardiovascular System
35 cards
7.1 Musculoskeletal System
Edexcel A-Level Biology > Topic 7: Run for Your Life
298 cards
7.1 Musculoskeletal System
Edexcel A-Level Biology > Topic 7: Run for Your Life
290 cards