Muscular System
The human body contains more than 650 individual muscles which are attached to the skeleton, which provides the pulling power for us to move around. The main job of the muscular system is to provide movement for the body. The muscular system consist of three different types of muscle tissues : skeletal, cardiac, smooth. Each of these different tissues has the ability to contract, which then allows body movements and functions. There are two types of muscles in the system and they are the involuntary muscles, and the voluntary muscles. The muscle in which we are allow to control by ourselves are called the voluntary muscles and the ones we can't control are the involuntary muscles. The muscular system makes up nearly half the weight of the human body. The muscles provide the forces that enable the body to move. Muscles stretch across joints to link one bone with another and work in groups to respond to nerve impulses.
Muscle Types
Cardiac Muscle
Cardiac muscle, similar to smooth muscle, cardiac muscle is an involuntary muscle. These muscles are thickened because they must contract frequently to move blood in and out of the heart. Cardiac muscle cells are quadrangular in terms of shape, and the muscles have striations, or which can resemble stripes or lines, running through them. The cardiac muscles is the muscle of the heart itself. The cardiac muscle is the tissue that makes up the wall of the heart called the mydocardium. Also like the skeletal muscles, the cardiac muscle is striated and contracts through the sliding filament method. However it is different from other types of muscles because it forms branching fibers. Unlike the skeletal muscles, the cardiac muscle is attached together instead of been attach to a bone.
Skeletal Muscle
Skeletal muscles are the voluntary muscles that allow you to control the movements of your body, although the nervous system controls the contraction of the muscle. Many of the skeletal muscle contractions are automatic. However we still can control the action of the skeletal muscle. And it is because of this reason that the skeletal muscle is also called voluntary muscle. Skeletal muscles also are striated and comprise the musculoskeletal system. These muscles are attached to your bones by tendons, which are cords of tissue. In order to move, your skeletal muscles, tendons and bones all must work together. Skeletal muscles come in different shapes and sizes. Other skeletal muscles in the body you may not be as aware of include those in the neck or face. Even your tongue contains skeletal muscles. Major skeletal muscles in the body include the deltoids (shoulders); pectorals (chest); abdominals (stomach); quadriceps (thighs); or gluteal muscles (buttocks). Skeletal muscles work in pairs, such as the biceps, which can lift the arms or the triceps, which are activated when the arms are straight.
Smooth Muscle
Smooth muscles are also known as involuntary muscles, meaning a person can not physically will them to move. Smooth muscles are instead controlled involuntary responses in the brain and body. One example of smooth muscle is the digestive system, where muscles in the esophagus contract to move food down to the stomach and tighten when you have an illness that causes you to vomit. Other examples of smooth muscle include the uterus, the bladder and behind the eyes to keep your eyes focused. In terms of appearance, smooth muscles are long, thin-shaped cells attached to bones in the body. Smooth muscles also are found in the blood vessels, helping blood to move around the body.
Cardiac muscle, similar to smooth muscle, cardiac muscle is an involuntary muscle. These muscles are thickened because they must contract frequently to move blood in and out of the heart. Cardiac muscle cells are quadrangular in terms of shape, and the muscles have striations, or which can resemble stripes or lines, running through them. The cardiac muscles is the muscle of the heart itself. The cardiac muscle is the tissue that makes up the wall of the heart called the mydocardium. Also like the skeletal muscles, the cardiac muscle is striated and contracts through the sliding filament method. However it is different from other types of muscles because it forms branching fibers. Unlike the skeletal muscles, the cardiac muscle is attached together instead of been attach to a bone.
Skeletal Muscle
Skeletal muscles are the voluntary muscles that allow you to control the movements of your body, although the nervous system controls the contraction of the muscle. Many of the skeletal muscle contractions are automatic. However we still can control the action of the skeletal muscle. And it is because of this reason that the skeletal muscle is also called voluntary muscle. Skeletal muscles also are striated and comprise the musculoskeletal system. These muscles are attached to your bones by tendons, which are cords of tissue. In order to move, your skeletal muscles, tendons and bones all must work together. Skeletal muscles come in different shapes and sizes. Other skeletal muscles in the body you may not be as aware of include those in the neck or face. Even your tongue contains skeletal muscles. Major skeletal muscles in the body include the deltoids (shoulders); pectorals (chest); abdominals (stomach); quadriceps (thighs); or gluteal muscles (buttocks). Skeletal muscles work in pairs, such as the biceps, which can lift the arms or the triceps, which are activated when the arms are straight.
Smooth Muscle
Smooth muscles are also known as involuntary muscles, meaning a person can not physically will them to move. Smooth muscles are instead controlled involuntary responses in the brain and body. One example of smooth muscle is the digestive system, where muscles in the esophagus contract to move food down to the stomach and tighten when you have an illness that causes you to vomit. Other examples of smooth muscle include the uterus, the bladder and behind the eyes to keep your eyes focused. In terms of appearance, smooth muscles are long, thin-shaped cells attached to bones in the body. Smooth muscles also are found in the blood vessels, helping blood to move around the body.