Which is true concerning muscle tissue? Select one: a. cuboidal shape enhances function b. highly cellular and well vascularized c. contains contractile units made of collagen d. is a single-celled tissue

The correct answer is option b, that is, highly cellular and well vascularized.

Explanation:

Muscle tissue comprises cells, which possess the tendency to contract or shorten in order to generate movement of the body parts. The tissue is well innervated with blood vessels and is highly cellular. The cells are slender and long, thus, they are on certain occasions known as the muscle fibers, and these are generally aligned in layers or bundles, which are enveloped by connective tissue.

The myosin and actin are the contractile proteins found in the muscle tissue. The muscle tissue can be differentiated into smooth muscle tissue, skeletal muscle tissue, and cardiac muscle tissue.