Read the following statements and select the correct option.
Statement 1: Cardiac muscle of the heart is striated and has intercalated discs between its fibres (cells)
Statement 2: It provides quick, powerful and rhythmic contractions to the heart.
Read the following statements and select the correct option.
Statement 1: Cardiac muscle of the heart is striated and has intercalated discs between its fibres (cells)
Statement 2: It provides quick, powerful and rhythmic contractions to the heart.
The correct option is B Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
Cardiac muscle tissue fibres show the characteristics of both striated and unstriated muscle fibres. The myofibrils have dark and light bands, thus they are striated but they are not under the control of the will of the animal, thus they are involuntary. They have intercalated discs at intervals. These discs permit the wave of muscle contraction to be transmitted from one cardiac fibre to another.
This provides quick, powerful and rhythmic contraction to the heart.
Statement 1 is the reason for statement 2 and not the other way around.
Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
Cardiac muscle tissue fibres show the characteristics of both striated and unstriated muscle fibres. The myofibrils have dark and light bands, thus they are striated but they are not under the control of the will of the animal, thus they are involuntary. They have intercalated discs at intervals. These discs permit the wave of muscle contraction to be transmitted from one cardiac fibre to another.
This provides quick, powerful and rhythmic contraction to the heart.
Statement 1 is the reason for statement 2 and not the other way around.
