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One of three types of muscle tissue
- Smooth muscle is one of three types of muscle tissue, alongside cardiac and skeletal muscle. It is a non-striated muscle tissue, lacking the characteristic markings of the other muscle types.
teachmephysiology.com › histology › tissue-structureSmooth Muscle Tissue - Structure - Function - TeachMePhysiology
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Apr 9, 2024 · Smooth muscle is one of three types of muscle tissue, alongside cardiac and skeletal muscle. It is a non-striated muscle tissue, lacking the characteristic markings of the other muscle types. It is found in numerous bodily systems, including the ophthalmic, reproductive, respiratory and gastrointestinal systems, where it functions to contract ...
Jul 17, 2023 · Structure and Function. Smooth muscle differs from skeletal muscle in function. Unlike skeletal muscle, smooth muscle is capable of maintaining tone for extended periods and often contracts involuntarily. At a cellular level, smooth muscle can be described as an involuntary, non-striated muscle.
- Brant B. Hafen, Micah Shook, Bracken Burns
- 2023/07/17
- 2021
Jul 30, 2022 · Smooth muscle fibers are spindle-shaped (wide in the middle and tapered at both ends, somewhat like a football) and have a single nucleus; they range from about 30 to 200 μ m (thousands of times shorter than skeletal muscle fibers), and they produce their own connective tissue, endomysium.
Mar 28, 2024 · Smooth muscle is an involuntary, non-striated muscle tissue found primarily in the walls of hollow organs and blood vessels, responsible for functions such as regulating blood flow and propelling substances through organs.
- 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...
Feb 24, 2023 · Smooth muscle fibers are spindle-shaped (wide in the middle and tapered at both ends, somewhat like a football) and have a single nucleus; they range from about 30 to 200 μ m (thousands of times shorter than skeletal muscle fibers), and they produce their own connective tissue, endomysium.
Introduction to Smooth Muscle. Smooth muscle tissue consists of small, spindle-shaped (kayak-shaped) cells with a single, centrally located nucleus. Unlike cardiac and skeletal muscle cells, smooth muscle cells do not exhibit striations since their actin and myosin (thin and thick) protein filaments are not organized as sarcomeres.
