Which of the Following is Characteristic of Cardiac Muscle Tissue

Question

Which of the following is characteristic of cardiac muscle tissue?
A) consists of a branching network of interconnected muscle cells
B) individual cells have many, irregularly shaped nuclei
C) can replace cells and regenerate after an injury
D) contracts only with nervous stimulation
E) also called striated voluntary muscle

Accepted Answer

Cardiac muscle tissue consists of a branching network of interconnected muscle cells that allow coordinated contraction and pumping of blood.

Answer: B
 Unlike skeletal and smooth muscle, cardiac muscle cells have a single, centrally located nucleus.

Answer: C
 Cardiac muscle cells have limited ability to regenerate after an injury or damage, and they are replaced by scar tissue.

Answer: D
 Cardiac muscle tissue contracts involuntarily in response to its own electrical impulses, without requiring nervous stimulation.

Answer: E
 Striated voluntary muscle tissue refers to skeletal muscle, not cardiac muscle. Cardiac muscle is also striated, but it is involuntary.