Similarities And Differences Between Skeletal, Cardiac, And Smooth Muscle.

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Evaluate the anatomical and physiological similarities and differences between skeletal, cardiac, and smooth muscle.
Skeletal Muscles are attached to bones. Their functions include: produce skeletal movement, maintain posture and body position, support soft tissues, guard body entrances and exits, maintain body temperature, and store nutrients. They are striated muscles because of their appearances of having bands of actin and myosin that form the sarcomere which is located in the myofibrils. The skeletal muscle consists of it being enormous in size, multinucleate (containing hundreds of nuclei internal to the plasma membrane), and banded. These types of muscles are voluntary since we control them by nerve impulses by the brain transmitting
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Smooth muscles are located within the hollow walls of organs such as the: oesophagus, stomach, bronchi, and blood vessel walls. They are stimulated by involuntary neurogenic impulses consisting of slow steady contractions that assist in controlling internal organs. For instance, during vasoconstriction blood vessels are constricted or as food passes through the esophagus (NIH, 2016).

Cardiac muscles are located within the walls of the heart. It is similar to the skeletal muscles being striated and similar to smooth muscles, as its contractions are not voluntarily conducted. They control the actions of the heart such as pumping the blood. However, it is specialized by the control of the autonomic nervous system. Cardiac muscles are very resistant to fatigue because of the vast amounts of myoglobin, mitochondria, and blood supply permitting consistent aerobic metabolism (NIH, 2016).

Distinguish fast, slow, and intermediate fibers. Provide an example of muscular activities for
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These muscles are utilized in high intensity, but only for short activities that last a few minutes. For example, they are located: on parts of the back, abdominal wall, shoulders, certain areas of the gluteus, parts of the hamstring, and the aerobic heart rate zone of the 3rd. During weigh and training intermediate twitch muscles are used to perform 10 or more repetitions. A drop in glucose levels is seen during resistance training on a higher end of repetitions or a rise at the lower end. This depends on the ability of the body being able to generate and regulate glucagon, blood pressure, insulin, and heart rate (Integrative Healthcare,

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