Type Of Muscles And Function In The Body
The gym has the greatest impact on muscles, bones, joints, and connective tissue, so it is worthwhile to know their functions, the way they function, the basic divisions, etc.
Muscles are divided into:
2. Cross-Striped (Which Is Most Commonly Encountered In The Human Organism)
3. Heart (He Is Very Specific And Does Not Meet Anywhere Else In The Body But Only The Heart Of That Material)
According to the ability to carry out the `command` transmitted to the nerves and nerves, the muscles are divided into:
1. MUSCLES OF MOVEMENT (They are composed of WHITE muscle fibers. They have a fast contraction, both positive and negative, but they get tired quickly. So their main characteristic is EXPLOSIVENESS)
2. TONIC MUSCLES (They are composed of red muscle fibers, they are slow to react, they are slow to get tired. They’re main characteristic is ENDURANCE)
Some other terms are important when we mention muscles, and there will be a lot of them in our texts and those are TONUS and CONTRACTION. Muscle tone is muscle tension, without the influence of external or internal forces. The contraction occurs after a signal arrives from the central nervous system to initiate chemical reactions that lead to muscle spasms.
There are three types of contractions
1. CONCENTRIC CONTRACTION (that is when the muscles attach)
2. ECCENTRIC CONTRACTION (removal of muscle attachments from each other)
3. STATIC CONTRACTION ( attachments remain at the same distance)
When we are already doing this basic division, it is important to know the basic biological events in the muscle during work.
During proper training, muscle fibers are created and strengthened, as well as the creation of new blood vessels, which lead to better blood flow to the muscle itself. There is also an increase in the angle at which muscle fibers join tendons. also read short head biceps.
But unprofessionally guided training leads to HYPERTROPHY, ie tendon thickening, and muscle fibers remain the same size or even smaller. This is the period when the most dangerous injuries occur (rupture of the muscle membrane, rupture of the muscle itself, separation of the tendon from the bone, or even rupture of the bone)
I think that for a start, it would be enough about the muscles and later you will find a lot of useful information on this site. Let’s move on to the JOINTS which are in the gym of almost the same importance as the muscles.
The basic division of joints is into MOVABLE and IMMOVABLE. The joint itself consists of the articular surface, the articular cavity, and the articular cavity.
Not to lengthen and go even further into the anatomy, I will explain only the types of movements in the joints, which are:
7. TURN INSIDE
8. TURNING OUTSIDE