Question

The endomysium is a thin connective tissue layer composed of reticular fibers and an external lamina that invests individual muscle fibers (cells). The epimysium surrounds the entire muscle, and the perimysium surrounds bundles (fascicles) of muscle fibers. What is the function of the endomysium?

1) To surround the entire muscle
2) To surround bundles of muscle fibers
3) To invest individual muscle fibers
4) To provide support and protection to the muscle fibers

Answer 1

The endomysium is a connective tissue layer that invests individual muscle fibers, supporting them by supplying nutrients and extracellular fluid.

Step-by-step explanation:

The function of the endomysium is to invest individual muscle fibers. This thin connective tissue layer, composed of collagen and reticular fibers, contains the extracellular fluid and nutrients to support these muscle fibers, ensuring that they remain functional and healthy. The nutrients within the endomysium are supplied via blood to the muscle tissue, playing a crucial role in the overall muscle function and health.