One of
the most important characteristics of a living body has the ability to move.
Movement helps us complete the implementation of various activities and the
different types of physical labor. The movement is not only external but also
occurs internally, the beating of a heart is a kind of movement that helps keep
the body alive. The movement of the digestive system helps us to digest food
and provide food for the body. The reason why our body can move due to the
presence of muscles. Without muscles, we are still just like a plant. The
muscles are divided into three types according to their structure. These
include smooth muscle, skeletal muscle and cardiac muscle. When we talk about
movement, this article completely on Buzzle skeletal muscle functions.
Skeletal
muscle is a type of striated muscle. These substances are in the somatic
nervous system, and therefore can be controlled through voluntary measures.
They are also striated muscles, called muscle-somatic or voluntary muscles. The
skeletal muscles of muscle fibers that are formed by fusion of myoblasts.
Myofibrils and myosin action that make them look like they striped muscles.
Muscle fibers run all the way from the starting point at the insertion of
skeletal muscles by a connective tissue together. These tissues, blood vessels
and nerves pass through. These muscle fibers contain myofibrils, mitochondria,
smooth endoplasmic reticulum (SER) and many cores. The cells contain nuclei,
because the myofibrils resulting from the fusion of many myoblasts. Thus, the
fibers of skeletal muscle is also known as a syncytium. Skeletal muscle tissue
covering the bones throughout the body. They are attached to bones by tendons,
or with the aid fits directly on the bone irregularities. The arrangement of
the muscle fibers of the beams causes the production of various types of
skeletal muscles. This includes converging parallel muscles, the muscles, the
sphincter muscles and feathered. Skeletal muscle is under the control of the
cerebral cortex.
Functions
of the skeletal muscles
Muscle
contraction and relaxation leads to a lot of body movement. These positive
movements of walking, holding, tilting your neck, flashing eyes, and many
others are due to the movement of skeletal muscles. Skeletal muscle function
and location make it one of the major tissues of the body. Skeletal muscle
function consists of five activities of these tissues. These functions are
explained below:
Skeleton
Movement
Since
the beginning of this description, I focused on the movement. The contraction
of skeletal muscles helps move caused the tendon to the bone, the movement.
These include the extension of your arm movements, breathing, cycling, writing,
writing, etc., the diaphragm, the muscles for breathing important help for a
person not only to inhale and exhale, but also laughing, sneezing and coughing.
To help shoulder muscles in the shoulders, the arms rise above the head. The
contraction of the biceps and triceps with bending and rigid arm at the elbow.
The gluteal muscles to stabilize the hips for walking and running.
Posture
and body balance
Skeletal
muscles help the person to maintain their posture. For example, the stand also
gluteal and keep upright posture. The M. sartorius is the longest in the thigh
muscle in the body. To support this muscle along with four other quadriceps
muscles in the movement of the leg. Not only that, they also help the balance
of the body.
Support
of soft tissue
The
intestines and other internal tissues and organs, which are very sensitive, are
supported by the skeletal muscles. The abdominal wall and pelvic cavity
consists of skeletal muscles. These substances not only support the weight of
internal organs, but also to protect against the risk of injury.
Help
points of entry and exit of the body
The
opening up of various committees such as the mouth, anus, urinary tract, etc.
are covered by the sphincter muscles. These muscles are arranged concentrically
around these openings. When these muscles contract, they are smaller aperture.
They help food, urination and defecation swallow.
Skeletal
muscles to maintain body temperature as hedges contractions of their energy
into heat. So after performing strenuous activity often feels very hot, because
the body loses heat by the action of the skeletal muscle system.
Some
functions of the skeletal muscles. As you can see, without skeletal muscles,
our body will not be able to support and maintain good posture. Any and all
voluntary and involuntary movements, in some cases due to the action of
skeletal muscles.
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