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Questions and Answers
Which type of muscle has intercalated discs between muscle cells?
Which type of muscle has intercalated discs between muscle cells?
- Smooth muscle
- Skeletal muscle
- Cardiac muscle (correct)
- Both cardiac and skeletal muscle
What is the main difference between cardiac and skeletal muscle?
What is the main difference between cardiac and skeletal muscle?
- Cardiac muscle has actin and myosin filaments, while skeletal muscle does not
- Cardiac muscle is found in the heart, while skeletal muscle is found in the limbs
- Cardiac muscle is striated, while skeletal muscle is not
- Cardiac muscle has intercalated discs, while skeletal muscle does not (correct)
What is the function of intercalated discs in cardiac muscle?
What is the function of intercalated discs in cardiac muscle?
- To allow for rapid transmission of action potentials between muscle cells (correct)
- To provide electrical insulation between muscle cells
- To anchor actin and myosin filaments in place
- To increase the strength of muscle contractions
Which type of muscle is a syncytium of many cells?
Which type of muscle is a syncytium of many cells?
What is the role of the atrioventricular (A-V) junction in the heart?
What is the role of the atrioventricular (A-V) junction in the heart?
What causes the twisting motion of the left ventricle during systole?
What causes the twisting motion of the left ventricle during systole?
What happens to the left ventricle at the end of systole?
What happens to the left ventricle at the end of systole?
What is the function of the left ventricular twist (torsion) during ventricular ejection?
What is the function of the left ventricular twist (torsion) during ventricular ejection?
Which direction does the apex of the heart rotate during systole?
Which direction does the apex of the heart rotate during systole?
What allows blood to rapidly enter the left ventricle during diastole?
What allows blood to rapidly enter the left ventricle during diastole?
Which type of drug delivery system is used for a local effect?
Which type of drug delivery system is used for a local effect?
Which type of drug delivery system is used for a systemic effect?
Which type of drug delivery system is used for a systemic effect?
Which type of drug delivery system is used for a local effect but can also have a systemic effect?
Which type of drug delivery system is used for a local effect but can also have a systemic effect?
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