Chapter 9, Problem 1RQ

Summary Introduction

To determine:

The name of the connective tissue that encloses the sarcolemma of individual muscle fiber as a covering is:

(a) Epimysium

(b) Perimysium

(c) Endomysium

(d) Periosteum

Answer to Problem 1RQ

Solution:

(c) Endomysium: The sarcolemma of the muscle fiber of an individual is covered by the endomysium connective tissue.

Explanation of Solution

The sarcolemma is a sheath, in the form of a tube that envelops the skeletal muscles. The muscle fiber is covered by three layers, namely, perimysium, epimysium, and, endomysium. Furthermore, it is endomysium (“endo” referring to inside) layer that is the innermost layer and forms the immediate covering of the muscle fiber. This layer helps in excitation and contraction of muscle fibers.