Multiple choice

Connective tissue mainly contains?

  1. actin

  2. collagen

  3. reticulin

  4. elastin

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Collagen is the most abundant protein in the extracellular matrix of connective tissues, providing strength, structure, and support. While elastin and reticulin are also found in connective tissues, collagen is by far the most dominant and widespread fiber type. Actin is primarily a contractile protein found inside muscle cells.