Muscular System

he hamstring muscles are located on the back of your thigh. They work closely with your quadriceps muscles (front of your thigh), your gluteal muscles, and your calf muscles to ensure proper movement of your leg and hip.

Your hamstring muscles control movement of your body, hip and knee, help turn your leg in and out, and are involved with power activities that include a lot of propulsion, thrust and control (such as jumping, running, and walking). They allow your knee to bend (flex the leg at the knee) and pull your leg backward while propelling your body forward when you move (your thigh straightens and extends the leg back at the hip). They are involved with eccentric movements, which increase the length of the muscle while it is under tension ­ instead of starting an action, the muscles act as a brake to stop an action. You can feel this when walking or running downhill, landing from jumps or performing squats, and when trying to stop quickly after sprinting. The hamstrings (posterior thigh muscles) are made up of 3 long muscles that start at the bottom of your pelvis extending down the back of your thigh and along either side of your knee, to your shin bones. The lateral hamstring is the biceps femoris (made up of 2 parts - a short head and long head) and the medial hamstrings are the semitendinosus (joins the sartorius muscle and gracilis muscle at the pes anserinus on the tibia) and the semimembranosus (the largest hamstring muscle). The tendons (tough fibers that connect muscle to bone) for these muscles begin at your ischial tuberosity (the bony bump under each buttock, known as your "sit bone") and attach on the outer edges of your shinbone (your tibia and fibula) just below the back of your knee. They help to stabilize your knee. Your hamstrings also have a lot of soft connective tissues and are innervated by your sciatic nerve. From: http://www.aidyourhamstring.com/pulled-hamstring.php

• trapezius
• deltiods
• latissimus dorsi
• pectorals
• biceps
• triceps
• quadriceps
• hamstrings
• butt muscles
• abdominals
• gastrocnemius
• Rectus abdominus
• glutues maximus
• tibials
• soleus

Most of the major muscles are used. Gastrocnemius, Quadriceps, back muscles, lat dorsis, erector spine and neck muscles.

Well a person who talkes alot uses about 35 muscles a person that talkes only a littel uses 23 muscles

NO! It is considered an to be an NSAIDs ~ meaning Non-Steroidal Anti-Inflammatory Drugs. Muscle relaxants or muscle relaxers can only be prescribed by a doctor or a PA ~ or someone who has the authority to prescribe medicine. But NO, it is NOT a "muscle relaxer! Also, IF you MUST take ANY kind of NSAIDs, PLEASE MAKE CERTAIN to have SOMETHING on your stomach, whether it be a couple of Saltine crackers, to 8oz of milk or 16 oz of water, as NSAIDs are VERY HARD on ones stomach. It can cause GI bleeds and stomach ulcers. If the GI bleeding from the stomach ulcers is not taken care of, one can die from due to lack of blood or from all of ones organs shutting down. As we all know, once the kidneys shut down, it's only a matter of time before the person dies. (I know from personal experience, as I almost died due to GI bleeding.

The sarcoplasmic reticulum is known for its storage of calcium ions in muscle cells.

Trauma or infection/disease. If someone sustains a blow to the eye or the socket area, contusions and edema follow. The bruising and swelling are the result of trauma. If the eye is not injured but is infected or being attacked by disease, swelling is a possible side effect. Either of the two basic conditions should be evaluated by a medical professional. Your sight may be at stake. It's not worth it to wait.

gluteus maximus is the largest muscle in your body

I really don't know, but mine are 11 1/2 inches! I am 15, so, yeah. just setting the record there.

Yeah mine are 13inch and yeah i am 15 also, 5 foot 8, 147 pounds

I am 16 i weigh 165 my arms are 17 incs. When i was 15 they were 14

i am 15 years old and weigh 72kgs and have a 6 pack and have 14inch is that big?

The fingers (Digits) of the hand are movable in 4 directions, Flexion (bending), Extension (straightening), Abduction (moving sideways away from the body) and Adduction (moving sideways towards the body). This is contrary to what most non-anatomists beleive, as they think the joints are all hinge joints. That is infact untrue, the joints between the tip and the middle of the finger and between the middle and the base of the finger (the Interphalangeal joints) are indeed purely Hinge joints which means they can only flex and extend. However the joint bweteen the base of the finger and the hand (the Metacarpophalangeal joint) is something called a condyloid joint, more like the ball and socket type in the shoulder than the hinge type in the other finger joints. It is at these joints that abduction and aduction take place. There are many muscle controlling these different types of movememnt mostly located in the forarem not the hand in fact there are no muscles on the Dorsum (back of the hand) at al. It should also be noted that the thumb and, to a lesser extent, the pinky have muscles that ack uniquely on them. The muscles are Named below: The flexors of the digits located in the forearm (Extrinsic): Flexor Carpi Ulnaris; Flexor Carpi Radialis; Palmaris Longus; Flexor Digitorum Superficialis; Flexor Digitorum Profunfus The flexors of the digits located within the hand (Intrinsic): Only ones that act on the pinky or thumb. The extensors of the digits located in the forearm: Extensor Carpi Ulanris; Extensor Carpi Radialis Longus; Extensor Carpi Radialis Brevis, Extensor Digitorum; Extensor Indicis (only on index finger). Extensors of the digits located within the hand; Lumbricles, located in the palm but have tendons that reach round to the back to extend the digits. Abductors of the digits; Dorsal Inerosseous Adductors of the digits; Palmer Interosseous

Action potential, release of calcium, change in tropomyosin conformation, attachment of globular myosin heads, release of ATP energy, movement of the Z-lines.

You know because it hurts lol

It will feel sore. If it is swollen that means it is broken but if you think it isn't broken or pulled then go to a doctor and get an x-ray because you might have chipped a bone!

Peristalsis involves circular smooth muscles and longitudinal smooth muscles in the effort to produce waves of contractions in a tube. This process is used in digestion to move the food (bolus) through the esophagus and the chyme (partially digested food) through the intestines.

A sprain is an overstretched or torn ligament.

A stretched ligament will remain stretched. It happens when undue tension is placed upon the ligament. A ligament can stretch to only about 6% of its length before it snaps.

A partially torn ligament will slowly repair itself. The process is slow because the ligaments are poorly vascularized.

When a ligament is completely torn, it requires surgical intervention. If left untreated, an inflammation of the surrounding joint will break down surrounding tissue and turn the injured ligament into 'mush'. It is a very difficult procedure.

An important ligament that is severely damaged must be removed and replaced with a graft or a substitute ligament. ( ex: tendon from a muscle or woven collage bands can be stapled to the articulating bones)

Internal organs usually do not move. Unless you mean the contraction of the heart, which is composed of cardiomyocytes.

If you have experienced some strange movement of other organs you should contact your doctor.

Mostly muscle cells

The musculo-skeletal system serves as a means of structure and movement for the body. It holds things in place, and lets us move.

Musculo (muscles)

Skeletal (bones)

Musculoskeletal = muscle and bone system. Basically everything that isn't an organ or nerve.

Triceps brachii
Elbow flexion is due to the contraction of the biceps brachii, the prime mover. The triceps brachii extends as the biceps brachii contracts and therefore is the antagonist muscle.

The ache you feel after a workout is called Lactic Acid. Basically, you have just torn your muscle fibers up and they are entering the repairing stage. Feeling this ache is very normal because that means you performed a strong, effective workout. Now eat right and let the muscles repair and get bigger. Later, while you are relaxing, the pain will encourage you to rub and manipulate the muscle...which is exactly what they need. Massage moves the lactic acid out and encourages blood flow (and feels painfully good), all of which will help sooth your growing and healing muscles.

Involuntary muscles are not under you conscious control they are responsible for essential activities such as breathing and digesting food. Voluntary muscles are under your conscious control smiling, turning a page in a book are controlled by voluntary muscles.

The biceps - any muscle attached to the skeleton.

The nervous system is closely related to the muscular system. The other would most likely be the circulatory system.