Two important fliaments of Muscle system of human body : thick and thin filaments
Thin Filaments : twisted actin molecules and each has an active site where they interact with myosin. In resting phase – active site covered by tropomyosin which is held in place by troponin
Thick filaments: Myosin filaments and they are head attaches to actin during contraction
Can only happen if troponin changes position, moving tropomyosin to expose active site.
Thick and Thin Filaments
key muscles
Key muscles
By having so many muscles in the body, here we can not cite everyone, but then mentioned the most important:
In each of the shoulders have a muscle called the deltoid. The deltoid help you move your shoulders in all directions - from using a baseball bat to shoulder when encogerte not know you a question. The pectoral muscles are located on both sides of the upper chest. For many children, when they enter puberty, they develop chest. Many athletes and cultures have highly developed pectoral.
Below the chest, below the rib cage (just where the ribs) are the abdominal muscles. When "doing ball with his arm, strained a muscle called the biceps. When muscle against this, you can see how they form a lump under the skin.
The quadriceps muscles are some who are in the front of the thighs. The people who run, bike or go well in practice other sports develop much the quadriceps.
Facial muscles
Maybe you never thought of it as a muscular, but you face a lot of muscles. Check the next time you look in the mirror.
The facial muscles do not join directly to the bone as in the rest of the body. Instead, many of these muscles come together under the skin. This allows you to enter the facial muscles can make many different expressions with your face. Even the slightest movement can transform a smile in an expression of concern, for example, frunciendo the entrecejo. Or you can lift the eyebrows and wrinkle your nose in a gesture of surprise.
And when you look at his face, do not forget the tongue - a muscle that is subject to only one end! In fact, the language is formed by a group of muscles that work together so that you can talk and chew what you eat. Put your tongue and move it from side to side to see these muscles in action.
Skeletal muscle
Now let's talk about the kind of muscles that you think when you say the word "muscle" - those that show how strong you are and let you shoot on goal and score a goal.
They are the skeletal muscles, also called striated (striated is a word that means a little weird to strip) because the bright and dark bands that make up makes it look as though they are made to strip.
The skeletal muscles are voluntary, meaning that you can control their movement. Your leg did not shoot a ball unless you want to do it.
These muscles are part of the musculoskeletal system - which is composed of the striated muscles and skeleton, or bones. The skeletal muscles are working with the bones to give the body strength and power. In most cases, skeletal muscle of the end of a bone, which is united, covers the bone along its entire length, including the joint (the place where the spindle is joined to another bone) and ends at the end another bone.
The skeletal muscles are attached to bones via tendons. The tendons are a kind of rope made of a fabric resistant muscles and bones that connect with each other. The tendons are so well attached to the bones that, when contracting a muscle, tendon and bone move at a time.
There are skeletal muscles of many different shapes and sizes, allowing them to play many different roles. Some of the larger and more powerful muscles are the ones who got in the back near his spine. These muscles help you keep right and standing. They also give your body the strength it needs to lift and push things.
The muscles that you have in the neck and the upper back are not as great, but they are capable of doing some pretty strange things: try to rotate the head sideways, forward and backward and up and down to notice the strength of the muscles of the neck. These muscles also help you hold your head.
smooth muscle
Smooth muscles, sometimes known as involuntary, often arranged in layers or sheets, one above the other. You can not control the movements of this kind of muscles. The brain and body to tell them these muscles what to do without you even have to think about it. You can not use the smooth muscles to "ball" with the arm or jump into the air. But you have smooth muscles to function throughout the body. In the stomach and digestive system, contract (tighten) and relax to help the food to move through your body. Smooth muscles also get down to work when you are ill and need to vomit. These muscles push the food leaves the stomach for it, climb up the esophagus and exit through the mouth.
You also have smooth muscles in the bladder. When you are relaxed, these muscles allow you to hold urine (the pee) until you go to the toilet. And when they are incurred, expel urine. These muscles are also found in the uterus of women, which is where the baby before birth. The muscles of the uterus to help expel the baby out of the body of the mother during childbirth.
You also have smooth muscles hidden behind the eyes. These muscles help you focus when you order something.
What muscles are made of?
All muscles are made of the same material, a type of elastic tissue (like a rubber band). Every muscle is composed of thousands or even tens of thousands of small fibers. We have three types of muscle: smooth muscle, cardiac muscle and skeletal muscle.
muscles in your body
Did you know that you have over 600 muscles in the body? Help you do almost everything - from pumping blood throughout your body to lift your heavy backpack. You control some of those muscles, while others, such as the heart, do your work alone without you having to think about it.
muscle system microsoft presentation ppt file pdf
This is a good source to learn about muscle system in human body. The file is hosted by rapidshare is a microsoft presentation file made by powerpoint .ppt muscle files. Also pdf e-book version is available for download. Muscle muscle system, muscle biology ppt, muscle physiology ppt click here to download it on rapidshare ;: http://rapidshare.com/files/150390898/Muscle-system-ppt-presentation.pdf.html
How Muscles are Named
How Muscles are Named
Direction of fibers
Size of muscle
Location of muscle
Number of origins
Muscle origin and insertion
Shape
Action
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