What are skeletal muscles composed of?

Answer 1

Skeletal muscle is well-organized body tissue, composed in a complex array of smaller and smaller structures. Each skeletal muscle is composed of many units called muscle fascicles. The fascicles are bound together by a type of connective tissue called fascia.

Fascicles are composed of smaller organizational units called muscle fibers.

Smaller strands called myofibrils organize muscle fibers. The myofibrils move as skeletal muscle contracts. It is the interaction of the myofibrils as they slide and pull along side each other that gives skeletal muscle its functional ability to do work and move things.

Putting it all back together, myofibrils compose muscle fibers, muscle fibers make-up muscle fascicles, and muscle fascicles are bound together by fascia to compose skeletal muscle.

Reviewed By

Review Date: 10/06/2008

Thomas N. Joseph, MD, Private Practice specializing in Orthopaedics, subspecialty Foot and Ankle, Camden Bone & Joint, Camden, SC. Review provided by VeriMed Healthcare Network.

Answer 2

Humans (and animals) have three types of muscles. Our cardiac muscles makes up the heart and allows it to beat, our skeletal muscles are attached to various bones in the body and by contracting and relaxing allow us to move, our smooth muscle is found in internal organs such as along the digestive tract and works involuntarily.

Answer 3

It is composed of small muscle segments called sarcomeres. They connect to form long strands of muscle, which is covered by a layer called perimysum.

Answer 4

The main constituents of the skeletal muscle myosin and actin. The action of actin and myosin cross-bridge cycling cause contractions.

Answer 5

Multinuclui striated cells

Answer 6

connective tissues

Answer 7

from aktin and miusin