Question

which of the following is true about the difference between cardiac muscle cells and skeletal muscle cells?
cardiac muscle cells does not have striations like skeletal muscle cells.
cardiac muscle cells have intercalated discs where skeletal muscle cells do not.
cardiac muscle cells does not have t - tubules.
cardiac muscle cells have more nuclei in them than skeletal muscle cells.
cardiac muscle cells does not have sarcomeres.

Explanation:

• Cardiac muscle cells have striations (so the first option is wrong).
• Cardiac muscle cells have intercalated discs which are unique to them and skeletal muscle cells lack them.
• Cardiac muscle cells have t - tubules (so the third option is wrong).
• Skeletal muscle cells are multinucleated while cardiac muscle cells usually have one or two nuclei (so the fourth option is wrong).
• Cardiac muscle cells have sarcomeres (so the fifth option is wrong).

Answer:

Cardiac muscle cells have intercalated discs where skeletal muscle cells do not.