13 Questions
Which type of muscle has intercalated discs between muscle cells?
Cardiac muscle
What is the main difference between cardiac and skeletal muscle?
Cardiac muscle has intercalated discs, while skeletal muscle does not
What is the function of intercalated discs in cardiac muscle?
To allow for rapid transmission of action potentials between muscle cells
Which type of muscle is a syncytium of many cells?
Cardiac muscle
What is the role of the atrioventricular (A-V) junction in the heart?
To insulate the atrial syncytium from the ventricular syncytium
What causes the twisting motion of the left ventricle during systole?
The contraction of the outer subepicardial layer
What happens to the left ventricle at the end of systole?
It recoils or untwists during diastole
What is the function of the left ventricular twist (torsion) during ventricular ejection?
To facilitate the movement of blood out of the ventricle
Which direction does the apex of the heart rotate during systole?
Clockwise
What allows blood to rapidly enter the left ventricle during diastole?
The recoil of the left ventricle
Which type of drug delivery system is used for a local effect?
Topical oils in joint pain
Which type of drug delivery system is used for a systemic effect?
Systemic delivery
Which type of drug delivery system is used for a local effect but can also have a systemic effect?
Laxative poultice on navel
Test your knowledge of the similarities and differences between cardiac and skeletal muscle with this quiz. Learn about their striated nature, actin and myosin filaments, and unique features like intercalated discs in cardiac muscle. Explore how these muscles function and contract differently.
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