Muscular System

It blocks the sodium channels that are required to create action potential in the muscles to make them contract.

To have strong bones you have to eat well and exercise.

I believe that is a joint.

Muscles always work in pairs, known as antagonistic pairs. When one muscle contracts (the agonist), the opposing muscle relaxes (the antagonist) to allow movement. For example, when you flex your bicep, the tricep relaxes, and vice versa. This coordinated action ensures smooth and controlled movements throughout the body.

the muscular system is important because you need to be able to move

Axon of neuron, sarcolemma, and T-tubules.

Many search engines, such as Google or Bing, provide an image searching service. I suggest typing 'leg muscles' or 'leg muscles diagram' into either of these websites' image searching pages.

the tougne is the strongest musce in your body!

It inserts onto the humerus. It originates from the coracoid process of the scapula.

There are 2 parts - Long head and short head. The long head is connected to the coracoid process by a tendon that comes up between the tubercules of the humerous. The short head is connected directly to the humerus.

during skeletal muscle contraction ,I band and H zone shortens.

Sarcomeres

I'd have to separate this question into 2 sections: ANS: 1) How to build muscle quickly In order to get big bulky muscles, you want to use heavy weights with low reps. I'd suggest 3 sets of 8 reps. To find out what is an appropriate weight for you, you need to do an experiment. At the 6-8th rep of each set, you will want to feel 'muscle failure' - the point at which your muscles are struggling against the load and can't seem to carry much further. However if you want long lean muscles, you will need to do low weights with high reps. This will definitely build endurance muscles. ANS: 2) What kind of exercises build shoulder muscles The shoulder muscles are divided into 3 parts - the posterior, lateral and anterior deltoids. There are therefore different types of exercises for each of the parts. + Anterior - Push ups + Lateral - Hold dumbells comfortably at the side of ur legs while ur standing tall. Lift your hands slowly until ur arms are parallel to the ground and slowly return them again. + Posterior - Lean again a weight bench, your right arm and leg resting on it and leave the left leg standing on the ground. In ur left arm, hold the dumbell and lift it behind ur body, extending as far as you can. Ok hope this helps.

Your glutes. And your hamstrings. You have to stretch your hammys really good first. the quads,and calves too. just run all the way around a track full speed and when you feel your muscles burning these are the muscles that will need to get stronger if you want to run fast.

If all your muscles were involuntary, they only respond to their environment and not to your will.

• Cardiac (heart muscle)
• Smooth (blood vessels, organs)
• Skeletal (body movement)

I believe the Z-lines anchor the Thin filaments

The rectus femoris THe regular Muscle Action is hip flexion with knee extension, as in kicking a ball or doing a straight leg raise The reverse muscle action is still hip flexion with knee extension, but as in doing sit-ups while lying supine with knes straight ahead

Muscles of internal organs are usually smooth muscles.It is not always so.Heart is an internal organ containing cardiac muscles.Oesophagus and diaphragm are example of exceptions which contain skeletal muscle.

When muscles contract and relax rapidly it is usually called twitching, or fasciculation. It is usually harmless and sometimes caused by a reflex action through the spinal cord, or from an imbalance in electrolytes in the blood, or even excess calcium inside the muscle cells. Rarely it is caused by a neurological problem. So unless it is constant and severe, it is more likely nothing to worry about.

Just the Deltoid, nothing else

It does has three heads though - anterior, middle, and posterior

They also think that it has 7 different activation regions, but I think that one's still up for debate

yes.

source:

year 3 science class

Endurance activity

A+

Basically when a muscle is torn its going to be very painful to move and very difficult to move. You will have limited control over that muscle for a good few weeks. Of course with almost any injury, time heals it. It becomes less painful and mends itself over the course of a few weeks. You will be able to move it again quite easily within a month.

However, when it does mend and grow back, it will be weaker than before, much weaker. It's nearly impossible to have the muscle preform like it used to. But with much physical therapy and LOTS of usage (Note: usage, DON'T overwork it especially so soon) and training, it is possible to make a full recovery and preform just as well if not better than before.

The above is true, however you must realize if you aren't an athlete or do intense physical training on a daily basis, chances are that muscle will never make a full recovery back to the state it was before the tear.

Cramps in most muscles are usually caused by the build up of lactic acid. This forms when your body attempts to go through cellular respiration but there isn't enough oxygen so the results are painful cramps.