The Muscular System and Its Functions
Hannah Loback
Muscle Essay
The muscular system is a network of tissues that controls movement of the human body.
Attached to the skeletal system are a multitude of muscles consisting of tissues, blood vessels, tendons, and nerves. Muscles are a bundle of fibrous tissue in the body that have the ability to contract, thus producing movement and maintenance of body parts. Without this system the ability to function and maintain a healthy lifestyle would be impossible. Correct posture, locomotion, and movement of internal organs are reliant. Although this system is composed of hundreds of muscles, each has various parts that provide a specific function.
The muscular system is composed of approximately 700 muscles. These in turn contain fibers, which are the basic functional units of muscles. Within these fibers are cylinder shapedbundles called myofibrils. These contain sarcomeres, which are made up of thick protein filaments known as actin and myosin. All of these components make up the two types of fibers, slow-twitch and fast-twitch. The muscles also contain 3 distinct tissues known as cardiac, skeletal, and smooth. Both cardiac and smooth muscle cells are under involuntary control and are located in the walls of organs; however, the skeletal fibers occur in muscles which are attached to the skeleton and are under voluntary control.
Muscles are specialized tissues who 's purpose is served primarily by contracting. Their complex structure carries out a depreciated skill, movement. It’s numerous components carry out independent functions; however, they work uniformly to perform the fundamental task.
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Hannah Loback
Citations
1. “Muscular System.” InnerBody. N.p., n.d. Web. 19 Oct. 2014.
2. “Types of Muscle Tissue: MedlinePlus Medical Encyclopedia Image.” U.S. National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 20 Oct. 2014.
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Muscle Essay
The muscular system is a network of tissues that controls movement of the human body.
Attached to the skeletal system are a multitude of muscles consisting of tissues, blood vessels, tendons, and nerves. Muscles are a bundle of fibrous tissue in the body that have the ability to contract, thus producing movement and maintenance of body parts. Without this system the ability to function and maintain a healthy lifestyle would be impossible. Correct posture, locomotion, and movement of internal organs are reliant. Although this system is composed of hundreds of muscles, each has various parts that provide a specific function.
The muscular system is composed of approximately 700 muscles. These in turn contain fibers, which are the basic functional units of muscles. Within these fibers are cylinder shapedbundles called myofibrils. These contain sarcomeres, which are made up of thick protein filaments known as actin and myosin. All of these components make up the two types of fibers, slow-twitch and fast-twitch. The muscles also contain 3 distinct tissues known as cardiac, skeletal, and smooth. Both cardiac and smooth muscle cells are under involuntary control and are located in the walls of organs; however, the skeletal fibers occur in muscles which are attached to the skeleton and are under voluntary control.
Muscles are specialized tissues who 's purpose is served primarily by contracting. Their complex structure carries out a depreciated skill, movement. It’s numerous components carry out independent functions; however, they work uniformly to perform the fundamental task.
!
!
!
Hannah Loback
Citations
1. “Muscular System.” InnerBody. N.p., n.d. Web. 19 Oct. 2014.
2. “Types of Muscle Tissue: MedlinePlus Medical Encyclopedia Image.” U.S. National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 20 Oct. 2014.
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Citations: 1. “Muscular System.” InnerBody. N.p., n.d. Web. 19 Oct. 2014. 2. “Types of Muscle Tissue: MedlinePlus Medical Encyclopedia Image.” U.S. National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 20 Oct. 2014. !