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Cardiovascular System Quiz

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Questions and Answers

What are the characteristics of the heart that it shares with skeletal muscle?

Branching fibers with similar actin and myosin arrangement (correct)

Cells connected by gap junctions and desmosomes

Separated into upper and lower chambers

Striated appearance and similar contraction mechanism

What is the role of calcium in skeletal muscle excitation/contraction coupling and contraction?

Repolarizes the muscle cell after contraction

Causes depolarization of the muscle cell

Prevents the refractory period

Activates the myosin-actin interaction (correct)

What separates the upper chambers of the heart?

Interventricular septum

Interatrial septum (correct)

Atrioventricular septum

Pulmonary septum

What is the daily pumping capacity of each side of the heart?

300 gallons Signup and view all the answers

What connects the cells of the heart muscle at the intercalated disks?

Gap junctions Signup and view all the answers

What is the role of intercalated disks in the heart?

To connect cardiac muscle cells Signup and view all the answers

What is the main similarity between the contraction mechanism of the heart and skeletal muscle?

Both have similar actin and myosin arrangement Signup and view all the answers

What separates the upper chambers of the heart?

Interatrial septum Signup and view all the answers

What is the daily pumping capacity of each side of the heart?

About 3000 gallons Signup and view all the answers

What are the characteristics of the heart that it shares with single-unit smooth muscle?

Cells connected by gap junctions and desmosomes Signup and view all the answers

Cardiovascular System Quiz

Choose a study mode

Podcast

Questions and Answers

What are the characteristics of the heart that it shares with skeletal muscle?

What is the role of calcium in skeletal muscle excitation/contraction coupling and contraction?

What separates the upper chambers of the heart?

What is the daily pumping capacity of each side of the heart?

What connects the cells of the heart muscle at the intercalated disks?

What is the role of intercalated disks in the heart?

What is the main similarity between the contraction mechanism of the heart and skeletal muscle?

What separates the upper chambers of the heart?

What is the daily pumping capacity of each side of the heart?

What are the characteristics of the heart that it shares with single-unit smooth muscle?

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