Question

Which tissues have little to no functional regenerative capacity?

A. cardiac muscle and nervous tissue
B. nervous tissue and bone
C. cardiac and smooth muscle
D. epithelial tissue and areolar connective tissue"

Answer 1

Smooth muscle tissue can regenerate, but cardiac muscle tissue has limited regenerative capacity. So, the correct answer is option c.

Step-by-step explanation:

Smooth muscle tissue can regenerate from a type of stem cell called a pericyte, which is found in some small blood vessels. Pericytes allow smooth muscle cells to regenerate and repair much more readily than skeletal and cardiac muscle tissue. Similar to skeletal muscle tissue, cardiac muscle does not regenerate to a great extent.

Dead cardiac muscle tissue is replaced by scar tissue, which cannot contract. As scar tissue accumulates, the heart loses its ability to pump because of the loss of contractile power. However, some minor regeneration may occur due to stem cells found in the blood that occasionally enter cardiac tissue.

So, the correct answer is option c.