Question

about Cardiac muscles. ​

Answer 1

|Cardiac muscles|

1) Cardiac muscles cells are long. branched and uninucleate.

2) They show alternate light and dark bands.

3) These are involuntary muscles.

4) They are seen only in the walls of heart.

5) They are non- tiring muscles and responsible for rhythmic contraction and relaxation of heart muscles throughout life.

Answer 2

$\underline\bold{ANSWER}$

→Cardiac muscle cells are found only in the heart, and are specialized to pump blood powerfully and efficiently throughout our entire lifetime.

→Four characteristics define cardiac muscle tissue cells: they are involuntary and intrinsically controlled, striated, branched, and single nucleated.

→Cardiac muscle tissue works to keep your heart pumping through involuntary movements. This is one feature that differentiates it from skeletal muscle tissue, which you can control.

→ It does this through specialized cells called pacemaker cells.

→ These control the contractions of your heart.