Skeletal Muscle Analysis

[1] The muscular system is used to maintain the body, hold the body together, and to allow the body to move. Many muscles cover the body and allow it to function to the best of its abilities; however, there are three types of muscles which allow the body to function: skeletal, smooth and cardiac muscles. Skeletal muscles use connective tissue to attach to the skeletal structure, and allow for movement of the body. Smooth muscles function by forming structures such as blood vessel walls or the walls of the digestive tract. The cardiac muscle, also known as the heart, functions by pumping blood throughout the body.

The cardiac muscles are the muscle of the heart itself. The cardiac muscle is the tissue that makes

Introduction: According to the “Human Physiology Laboratory Manual “,BIOL 282 ,page 31 , the reason of performing this experiment is to learn how the muscle contraction occurs based on the molecular level and what kind of factors are involved .As a matter of fact, skeletal muscles contain a lot of nuclei because of the cell fusion while being developed and are made of cylindrical cells that have myofibrils. The myofibrils contain sarcomeres and the

There are three types of muscle tissue: skeletal, cardiac and smooth muscle. Skeletal muscle is attached to bones and helps with movement. Cardiac muscle is found the heart helping the heart to contract and pump blood through an organism. Smooth muscle lines the walls of organs in the digestive and urogenital tracts.

Our body has three muscle types, skeletal muscle , cardiac muscle, and smooth muscle. Each muscle has different functions within the body. Cardiac muscle is located in the heart and is responsible for pumping blood within the heart. Cardiac muscle is one of the two muscles with an activity that is non-voluntary meaning that signal from the motor neuron is not required for blood to pump through the heart. The second type of muscle is smooth muscle which is located in the intestines and responsible for moving food and regulating blood pressure(Freeman, 2011). Like cardiac muscle, smooth muscle also requires non-voluntary activity, where the signal from the motor neurons is not required for it to function properly. Lastly, the most important muscle in the neuromuscular junction, skeletal muscles. Skeletal muscle is attached to the bones through tendons composed of connective tissue and is responsible for moving the skeleton, however unlike the other two muscle types, skeletal muscle requires voluntary activity meaning that signal from the motor neurons is required (Ritchison, 2016). In this paper, I will be discussing the functions and parts of the neuromuscular

There are three types of muscle tissues in the human body: skeletal, smooth and cardiac muscle. Skeletal muscles are striated muscles that attach to the bone by tendons and permit movement. Skeletal muscles promote movement by contracting and relaxing in response to voluntary messages from the nervous system, deeming skeletal muscles, the only voluntary muscles in the human body. Smooth muscles are involuntary muscles found inside the walls of the stomach,

Muscle is formed with a long and thin tissue called muscle tissue which moves the organs and organisms, and the muscle tissue is made out of a group of cells called the muscle fibers. There are three types of muscle: skeletal muscle, smooth muscle, and cardiac muscle. Skeletal muscle is the muscle who moves the bones, it has much longer fibers than the smooth muscles. Smooth muscle forms the walls of organs, for example, the wall of a stomach. Cardiac muscle is the muscle that forms the heart. From the cross-section view of a muscle, it shows that there is a layer of muscle sheath around the outermost layer of the muscle. The blood vessels that brings glucose and oxygen to the muscle are weaved in the fibers, and there is a layer of epithelial cells around the muscle to keep the fibers together.Muscle tissue can repair itself, but with round scar tissue instead of long, stretchy fibers. Skeletal

In Anatomy and Physiology, one of the topics this class recently covered was the muscle system. In the video, “How Your Muscular System Works” published in 2017 by Emma Bryce said a brief explanation of how the muscular system works. In the video, Bryce stated, “Each time you take a step, two hundred muscles work in unison to lift your foot, propel it forward, and set it down.” Indeed, each muscle is responsible to do a specific movement. The muscle system is a very important system because this is where the three types of muscles come from. For example, in the video, it talked about the skeletal muscle, cardiac muscle, and the smooth muscle. The skeletal muscle is involuntary muscle and voluntary muscles. In addition, the cardiac muscle and the smooth muscle are only involuntary muscles. The cardiac muscle is only found in the heart. The smooth

Smooth muscles are found in the skin, internal organs, reproductive system, major blood vessels, and excretory system. Skeletal muscles are composed of long fibers surrounded by a membranous sheath, the sarcolemma. Since the Skeletal muscles are under control by whom ever they belong to are called voluntary muscles. This muscle is attached to two or more bones which are then attached to the skeleton by tendons. For example, head and neck muscles; contraction of these muscles produces facial expressions and head movements. They are also responsible for speech and swallowing. Skeletal muscles are the main muscles which move your body. Muscles nearly always work in coordinated groups; contraction of one muscle is accompanied by relaxation of another, while other muscles stabilize nearby joints. Then the last of the muscle types is the Cardiac Muscle or the involuntary muscles. Cardiac muscles are not under conscious control they do not react by a persons decision or movement. and are connected to the nervous system which are stimulated by autonomic impulses. Cardiac muscles are found in your internal organs like the heart or the intestine. For example; they include muscles that propel food through the intestine and those that control sweating and blood pressure.

Muscle fiber types as we understand have two types which are type I and type II. Type I is which is also called the slow twitching muscles has the ability to generate high amount of force. Type II are fast twitching muscles which generate a lower amount of force. Type I fibers take approximately 110 ms to reach peak tension when stimulated. Type II fibers, on the other hand, can reach peak tension in about 50 ms. (Wilmore, J., 2008) According to the article in http://www.brianmac.co.uk/, called “Muscle Type”, Type I muscle fibers are mostly found in the

The musculoskeletal involves the muscles and skeletal system which consist of bones supporting the bodyweight. The muscles and bones help in movement and maintaining body position through the physiological process of contraction and relaxation, muscles pulling on the bones. The skeletal systems also consist of cartilages and ligaments important for bone connection and stability with connective tissue. The muscles get attached to the bone by the connective tissue enhancing contraction and relaxation in movement. The muscles contain long muscle fibers responsible for the contraction and relaxation. The fibers contain bundles some of which allow slow movement described as slow twitch and fast twitch which ensure fast movement. The process of movement involves coordination between the musculoskeletal system and nervous system. In the process of muscle contraction to enhance movement the following takes place. (Arthur Guyton, 2006)

There are between 640-840 muscles in the body, and they all fall into one of three categories. The first category is cardiac muscles. As made apparent by the name, these cross-striated muscles are found in the walls of the heart. They cannot be controlled voluntarily. These rough quadrangular muscles of your heart are peculiar; they stimulate themselves. Cardiac muscles never stop working, their branched structure helps them endure this constant

The skeletal muscles of vertebrates are responsible for all voluntary movements, as well as many involuntary actions. They are made up of many bundles of skeletal muscle cells, called muscle fibers. Within the muscle fibers are bundles of the proteins actin and myosin, which control contraction; these bundles are known as myofibrils. Within a myofibril, repeating units of overlapping actin and myosin filaments make up the sarcomeres. Actin filaments with the sarcomeres are wrapped with tropomyosin, another protein, which has troponin protein molecules attached to it. At end points of the myosin filaments are globular heads which are capable of binding to sites on the actin and moving the actin. The movement of actin by the myosin is referred to as the power stroke. The sarcomeres shorten during contraction (Sedava et al, 2014).

Skeletal muscles allow us to move our bodies. They are composed of three different types of muscle fibers; slow-twitch (type 1), fast-twitch oxidative fibers (type 2a), and fast-twitch glycolytic fibers (type 2b).

There are three types of muscle in a human’s body: skeletal, smooth, and cardiac; those three muscles are part of the human’s body 640 part muscular system. Each muscle has a specific function that allows us to do certain activities. The achilles tendon is a long muscle that connects the gastrocnemius muscle to the heel bone. The achilles tendon can be felt at the back of your ankles above the heel. This muscle allows your foot to extend and move around.