Human muscle system
13 rows · May 21, · The muscles of the human body can be categorized into a number of groups which include muscles relating to the head and neck, muscles of the torso or trunk, muscles of the upper limbs, and muscles of the lower limbs. The action refers to the action of each muscle from the standard anatomical position. In other positions, other actions may be performed. Apr 09, · Skeletal muscle is the only voluntary muscle tissue in the human body—it is controlled consciously. Every physical action that a person consciously performs (e.g. speaking, walking, or writing) requires skeletal muscle. The function of skeletal muscle is to contract to move parts of the body closer to the bone that the muscle is attached to.
Did you know you have more than muscles in your body? They do everything from pumping blood throughout your body to helping you lift your heavy backpack. You control some of your muscles, while others — like your heart — do their jobs without you thinking about them at all. Muscles are all made of the same material, a type of elastic tissue sort of like the material in a rubber band. Thousands, or even tens of thousands, of small fibers make up each muscle.
You have three different types of muscles in your body: smooth muscle, cardiac say: KAR-dee-ak muscle, and skeletal say: SKEL-uh-tul muscle. Smooth muscles — sometimes also called involuntary muscles — are usually in sheets, or layers, with one layer of muscle behind the other.
You can't control this type of muscle. Your brain and body tell these muscles what to do without you even thinking about it. You can't use your smooth muscles to make a muscle in your arm or jump into the air. But smooth muscles are at work all over your body. In your stomach and digestive system, they contract tighten up and relax to allow food to make its journey through the body. Your smooth muscles come in handy if you're sick and you need to throw up.
The muscles push the food back out of the stomach so it comes up through the esophagus say: ih-SAH-fuh-gus and out of the mouth. Smooth muscles are also found in your bladder. When they're relaxed, they allow you to hold in urine pee until you can get to the bathroom. Then they contract so that you can what is the worst disaster the urine out.
These muscles are also in a woman's uterus, which is where a baby develops. There they help to push the baby out of the mother's body when it's time to be born. You'll find smooth muscles at work behind the scenes in your eyes, too. These muscles keep the eyes focused. The muscle that makes up the heart is called cardiac muscle.
It is also known as the myocardium say: my-uh-KAR-dee-um. The thick muscles of the heart contract to pump blood out and then relax to let blood back in after it has circulated through the body. Just like smooth muscle, cardiac muscle works all by itself with no help from you.
A special group of cells within the heart are known as the pacemaker of the heart because it controls the heartbeat. Now, let's talk about the kind of muscle you think of when we say "muscle" — the ones that show how strong you are and let you boot a soccer ball into the goal. These are your skeletal muscles — sometimes called striated say: STRY-ay-tud muscle because the light and dark parts of the muscle what does check engine light mean on a volvo make them look striped striated is a fancy word meaning striped.
Skeletal muscles are voluntary muscles, which means you can control what they do. Your leg won't bend to kick the soccer ball unless you want it to. These muscles help to make up the musculoskeletal say: mus-kyuh-low-SKEL-uh-tul system — the combination of your muscles and your skeleton, or bones. Together, the skeletal muscles work with your bones to give your body power and strength. In most cases, a skeletal muscle is attached to one end of a bone. It stretches all the way across a joint how to fry an omelette place where two bones meet and then attaches again to another bone.
Skeletal muscles are held to the bones with the help of tendons say: TEN-dunz. Tendons are cords made of tough tissue, and they work as special connector pieces between bone and muscle. The tendons are attached so well that when you contract one of your muscles, the tendon and bone move along with it. Skeletal muscles come in many different sizes and shapes to allow them to do many types of jobs. Some of the biggest and most powerful muscles are your calf and thigh muscles.
They give your body the power it needs to lift and push things. Muscles in your neck and the top part of your back aren't as large, but they are capable of some pretty amazing things: Try rotating your head around, back and forth, and up and down to feel the power of the muscles in your neck. These muscles also hold your head high. You may not think of it as a muscular body part, but your face has plenty of muscles. You can check them out next time you look in the mirror.
Facial muscles don't all attach directly to bone like they do in the rest of the body. Instead, many of them attach under the skin. This allows you to contract your facial muscles just a tiny bit and make dozens of different kinds of faces.
Even the smallest movement can turn a smile into a frown. You can raise how to write a skills based cv uk eyebrow to look surprised or wiggle your nose. And while you're looking at your face, don't pass over your tongue — a muscle that's attached only at one end!
Your tongue is actually made of a group of muscles that work together to allow you to talk and help you chew food. Stick out your tongue and wiggle it around to see those muscles at work. Because there are so many skeletal muscles in your body, we can't list them all here. But here are a few of the major ones:. Reviewed by: KidsHealth Medical Experts. Larger text size Large text size Regular text size.
Human muscle system, the muscles of the human body that work the skeletal system, that are under voluntary control, and that are concerned with movement, posture, and balance. Broadly considered, human muscle—like the muscles of all vertebrates—is often divided into striated muscle (or skeletal muscle), smooth muscle, and cardiac muscle. Apr 11, · Smooth muscles Smooth muscles are responsible for movements in the stomach, intestines, heart, arteries, and hollow organs. The smooth muscles in the bowel are also called visceral muscles. These Author: Yvette Brazier. There are skeletal muscles. The smallest skeletal muscle is called stapedius. The largest muscle in the body is called gluteus maximus. The most active muscles in the body are the eye muscles. Muscles are able to function by using chemical energy called ATP to convert it into mechanical energy. There are three types of muscle tissue which include skeletal, cardiac, and smooth.
There are more than muscles in the human body. Muscles are considered the only tissue in the body that has the ability to contract and move the other body parts. Basically, these muscles are used for locomotion, first and foremost, but also for achieving complex and impressive moves. Because of their usage and movement, exercise programs that involve the martial arts can be very beneficial for individuals looking to stay fit and improve muscle tone and coordination.
It is vital to know the major muscle groups especially in improving your body. Knowing the right kind of exercise in every muscle group has a powerful impact. You must focus on each muscle group and here are a few reasons why:. The main muscle group of the chest is the pectorals. A well-developed chest is very important because it will add major size to your inner upper body.
The chest is a very visible part of the upper body, that can add weight and force to all your martial arts moves. The pectorals or pecs are the large chest muscles. They are full of thick muscle fibers and add size to the upper body. The chest is divided into two parts, pectoralis major, and pectoralis minor. They provide support when you hold objects in front of your body and they are activated when you reach across your body.
The pecs are activated in many everyday movements, mainly at the shoulder joint. For instance, when you grab a seat belt or comb your hair on the opposite side. Another is a basic task like reaching into your back pants pocket or to tuck in your shirt. The back is the most complex major muscular structure in the entire body. It is a perfect combination of multiple muscles working in harmony and complementing each other in various physical activities.
The back rises from the buttocks and stretches to the neck and shoulders. There are essentially five muscle groups present in the back. They are:. It is a large, flat muscle on the back that stretches to the sides, behind the arm, and is partly covered by the trapezius on the back near the midline.
The lats facilitate the body in pulling movements and compliment the arms in pursuing various physical activities like pulling something into your body, or when you take something down from a shelf above your head. Also, they are heavily involved in many swimming movements. The rhomboids are located in the upper back. They are underneath the trap muscles and not visible from outside. They originate from the spinal cord and merge into the scapular bone.
Also known as, the traps, that are located between the shoulders and the neck. The traps can further be classified into three divisions- the upper traps, middle traps, and the lower traps, with the lower traps extending as low as the lower back.
The traps control the scapulae or the shoulder blades and play an important role in shrugging and neck movements. They are used to tilt and turn the head and neck and shrug the shoulders. They also provide support when you lift items over your head.
It works with the lats as well as the rotator cuffs. Exercises like single arm lat pulldowns and pullovers target this muscle directly. Compound exercises like deadlifts, shoulder presses, and rows also target this muscle. The erector spinae or spinal erectors is a set of muscles that straighten and rotate the back. They are actually deep muscles that help to extend the spine and are key in posture.
They are also important when bending forward, and sideways. This muscle is found in the front of the upper arm. The biceps help control the motion of both the shoulder and elbow joints. At the elbow, the biceps are essential in lifting, and at the shoulder, they help with moving the arms sideways, forward and upwards. Basically, this muscle helps bend or curl the arm toward your body. The triceps are muscles in the back of the upper arm. These muscles help stabilize the shoulder joint and allow the elbow joint to be straightened.
The triceps are utilized in passing and shooting a basketball, and help with finite movements such as in writing, drawing or even push and pull.
The deltoids, or delts, are known as the shoulder muscles. This muscle group is used on all side of body lifting motions.
They provide support when you carry things and help keep carried items away from the motion path of the thighs. The deltoid muscle consists of 3 parts: anterior deltoid, medial deltoid, and posterior deltoid.
The abdominals assist in the breathing process and protect inner organs. They are key in twisting motions, such as a golf swing or looking behind yourself. They also play a key part in bending over motions, and in maintaining good posture, and are a key focus in MMA Mixed Martial Arts training , as well.
The muscle group on the sides of the abdominals are the obliques. Movement of these muscles may result in several actions, but they are best known for their lateral flexion and rotation of the trunk known as a side bend. The obliques help support the spine from the front. They are also vital in keeping a good posture.
The hamstrings are the huge muscle group in the upper back part your thighs. Its main function is to bend your knees and help propel your body forward in such activities as walking, running, jumping, or doing a Krav Maga kick. They are also used during squats and deadlifts. The glutes are muscles of your buttocks and the largest muscles in your body. They are key muscles in the movement of the legs backward and sideways. The glutes also help you maintain balance in walking or running. The quadriceps is the second largest major muscular structure in the human body after the back.
It is located in the upper front part of the leg. The four huge muscles are namely rectus femoris, vastus lateral, vastus intermedius and vastus medialis.
Commonly called as the calf muscles. The calves are located in the lower back part of your legs. They are key muscles when you lift your heels up, such as when you walk, run, and go upstairs. They are also important for explosive moves such as sprinting, jumping and climbing. Try to find balanced workouts that can reserve some exercises for every muscle group in your body.
If you feel like anything is left out, take the time for doing a few minutes of targeted exercises, specifically designed for the muscles you feel like you are not working enough. Such targeted exercises are pretty easy to find on YouTube, or you can discuss it directly with your trainer. Even on a budget training camp you will be able to find a dedicated trainer who can walk you through the best ways to exercise for a shaped body.
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