What Are Muscles Origin?

to contract, which then allows body movements and functions? There are two types of muscles in

during these movements, the angles of those joints, as well as the muscles involved during the

The contraction of the extent which the The direction which the bone of the joint move depends on the contraction of the muscle.

There are six primary movements that occur at the joints between the body segment; flexion, extension, abduction, adduction, rotation, and circumduction.

Individual muscles are made up of individual muscle fibers and these fibers can be further organized into a motor unit grouped within each muscle. A motor unit is simply a bundle of grouped muscle fibers. When you want to move the brain instantaneously sends a signal or impulse through the spinal cord that reaches the motor unit. Muscle fibers are cells like the basic building block of the muscle. There are a few different types of muscle fibers, each are designed for a specific type of muscle activity. Some muscle fibers are good for endurance exercises, other work best for the short bursts. Each muscle fiber is a single cell. Each cell consists of a structure.

The anatomy which the physical structure of the body and physiology which is the normal functions of the body help individuals to move their limbs. Muscles have the power of contraction thus it produce movement of the body and allow the bones to work like hinges. When moving someone/individual it is important to remember that the muscles can only move the joint as far as the bones will allow them.

This arrangement means that muscles are able to work together, allowing for one limb to be straightened by one muscle and to be bent by the other. Muscles that bend a limb are called flexors and muscles that straighten a limb are called extensors.

Summary… A condition which is characterized by an inability of the muscles to function at their full strength; a vague complaint of debility, fatigue, or exhaustion attributable to weakness of various muscles. The weakness can be characterized as subacute or chronic, often progressive, and is a manifestation of many muscle and neuromuscular diseases.

Second we have extension, which is the opposite of flexion, causing an increase in angles between body parts. The best example exercise for extension would be leg extensions, which causes movement and extension at the knee in order to stretch and strengthen the legs.

Those arrangements are the agonist, antagonist, and synergists which are responsible for the production of movements. Agonists muscle are also known as “prime movers or bicep brachii” they produce the main movement or sequences of movements via their own contractions in order to create a movement. Agonist muscles are usually organized in a way where they cross a joint through the tendon (Boundless, 2016). Antagonist muscles perform as opposing muscles to agonists. This means that they are responsible for returning the limb(s) to its original resting position. Synergist muscles are in control around a moveable joint to produce motion similar to the agonist muscles. They are responsible for the reduction of excessive force to create smooth muscle movements and they are also referred to as neutralizers (Boundless, 2016). Whenever, it is that the muscles contract they will pull on the bones in which they are attached in order to produce movement in the

your calf must contract to extend your ankle this is called plantar flexion, while the muscles on the front of your shin contracts to hold your ankle rigid. The action muscle in place there is called an isometric contraction, where the muscles create tension but, they are not causing any actual joint movement they are just holding the ankle in place.

One example of a movement at a synovial joint would be flexion. Flexion is a physical position that declines the angle between the bones of the limb at a joint. It happens when muscles contract and bones change the joint into a bent position. For example, bending the elbow, or clenching a hand into a fist, are examples of flexion. When sitting down, the knees are flexed. When a joint can move forward and backward, such as the neck and trunk, flexion refers to movement in the anterior direction. Flexion of the shoulder or hip refers to movement of the arm or leg forward. Extension the opposite to flexion. Extension is the bodily position that will increase the angle at a joint between the bones. For example, when standing up, the knees extend.

The skeletal muscle pump is a number of skeletal muscles which help the heart by circulating blood. The skeletal muscle pump plays an important role in the increase of venous returning back to the heart. It starts to work when contractions apply pressure against the vein. The valves that is proximal to the region where the contractions have occurred are pushed open which allows the blood to drive back into the heart. The other valves which is located near the distal region of contraction are sealed by the blood that is back flowing. The vessels that it operates on are called the arterioles, their function is to regulate the blood flow into different tissues. These vessels then branch into the capillaries which is the tinniest blood vessels in the human body. It is different because each time that the heart pumps it pushes the blood

There are three types of joins in the skeletal system each allowing different types of movements.

What is the purpose of this exercise? In this exercise I will exam how joints function and thereby discover how they allow for movement in the body. Joints are where two bones come together. The joints hold the bones together and allow for movement of the skeleton. All of the bones, except the hyoid bone in the neck, form a joint. Joints are often categorized by the amount of motion they allow. Some of the joints are fixed, like those in the skull, allow for no movement. Other joints, like those between the vertebrae of the spine, allow for some movement. Most of the joints