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These tissues include the skeletal muscle fibers, blood vessels, nerve fibers, and connective tissue. Each skeletal muscle has three layers of connective tissue (called mysia) that enclose it, provide structure to the muscle, and compartmentalize the muscle fibers within the muscle (Figure 10.2.1).
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
- Circular
- Convergent
- Parallel
- Pennate
Circular muscles (also known as skeletal sphincter muscles) have a fascicular pattern where the fascicles are arranged in concentric rings. Muscles with this arrangement surround external body openings, which they close by contracting. Muscles with this fascicular arrangement may be termed as orbicular muscles (Latin: orbiculus = small disc), such ...
A convergent (a.k.a. triangular) muscle has a broad origin with fascicles converging toward a single tendon of insertion. Such a muscle is triangular or fan shaped. One example is the pectoralis major muscle of the anterior thorax.
In a parallel arrangement, the length of the fascicles run to the long axis of the muscle. There are three types of parallel muscles: 1. quadrilateral muscles, which have a short, flat form e.g. thyrohyoid muscle 2. strap muscles, that have a narrow belt- or strap-like belly e.g. sartorius muscle 3. fusiform muscles, with a spindle-shaped and exten...
In a pennate pattern, the fascicles are short and they attach obliquely to a central tendon that runs the length of the muscle. Pennate muscles are of three forms: 1. Unipennate, in which the fascicles insert into only one side of the tendon, as in the extensor digitorum longus muscle of the leg; 2. Bipennate, in which the fascicles insert into the...
Aug 28, 2023 · Skeletal muscle is one of the three significant muscle tissues in the human body. Each skeletal muscle consists of thousands of muscle fibers wrapped together by connective tissue sheaths. The individual bundles of muscle fibers in a skeletal muscle are known as fasciculi.
- Heeransh D. Dave, Micah Shook, Matthew Varacallo
- 2018
May 18, 2021 · Muscle tissue is a soft tissue that composes muscles in animal bodies, and gives rise to muscles' ability to contract. This chapter will cover the details of skeletal muscle tissue, or striated …
Aug 30, 2023 · Skeletal muscles contain connective tissue, blood vessels, and nerves. There are three layers of connective tissue: epimysium, perimysium, and endomysium. Skeletal muscle fibers are organized into groups called fascicles. Blood vessels and nerves enter the connective tissue and branch.
Jul 30, 2022 · The Neuromuscular Junction. Excitation-Contraction Coupling. Contributors and Attributions. Learning Objectives. Describe the layers of connective tissues packaging skeletal muscle. Explain how muscles work with tendons to move the body. Identify areas of the skeletal muscle fibers. Describe excitation-contraction coupling.
Each skeletal muscle is an organ that consists of various integrated tissues. These tissues include skeletal muscle fibers, blood vessels, nerve fibers, and connective tissue. Blood vessels supply nutrients and remove wastes. Skeletal muscle is innervated (contains nervous tissue) which signals the muscle fibers to contract.
